failed to write to pipe 4e4f4b5846

[xplanthris]

Description

The bootloader fails to unlock every time on two laptops with the same error of failed to write to pipe 4r4f4b584652004

Steps To Reproduce

Go to unlock the bootloader add all the required files start wait get the error after it attempts to flash the unlocked bootloader (part 1)

Expected behavior

The bootloader should be unlocked normally.

WPinternals Version

v2.9.2

Windows Version

Windows 11 22H2 22621.1702

Phone model

Lumia 550

Relevant Assets

2023-05-27 12:16:49.215: Windows Phone Internals version 2.9.7894.11970 2023-05-27 12:16:49.219: Copyright Heathcliff74 / wpinternals.net 2023-05-27 12:16:49.381: Flash App Type: FlashApp 2023-05-27 12:16:49.388: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:16:49.388: Device path: \?\usb#vid_045e&pid_0a02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:16:49.388: Connected device: Lumia 2023-05-27 12:16:49.388: Mode: Flash 2023-05-27 12:16:49.472: Security flags: 0x00004BFF 2023-05-27 12:16:49.788: Platform Name: Microsoft.MSM8909.P6236.2.0 2023-05-27 12:16:49.808: Public ID: F0 BF 21 02 92 C6 04 C5 7F 4D 19 56 9A 22 46 20 11 25 DD 9C 2023-05-27 12:16:49.826: Root Key Hash: 56 BD C3 74 62 26 E0 80 14 6D 4D 30 C8 C8 43 26 57 A5 28 2F 05 0B 19 94 CF E8 49 71 C5 86 FA B9 2023-05-27 12:16:49.826: Platform Secure Boot Status: True 2023-05-27 12:16:49.826: Uefi Secure Boot Status: True 2023-05-27 12:16:49.827: Effective Secure Boot Status: True 2023-05-27 12:16:49.827: Bootloader Security Qfuse Status: True 2023-05-27 12:16:49.827: Bootloader Security Authentication Status: False 2023-05-27 12:16:49.827: Bootloader Security Rdc Status: False 2023-05-27 12:16:49.827: Effective Bootloader Security Status: True 2023-05-27 12:16:49.827: Native Debug Status: False 2023-05-27 12:16:49.980: Charging status: 9% - 1867 mA (charging) 2023-05-27 12:16:50.219: Phone type: RM-1127 2023-05-27 12:16:50.219: Product code: 059X5V9 2023-05-27 12:16:50.219: Root key hash: 56BDC3746226E080146D4D30C8C8432657A5282F050B1994CFE84971C586FAB9 2023-05-27 12:16:50.219: Firmware version: 01078.00042.16352.50000 2023-05-27 12:16:50.219: IMEI: 355132070314093 2023-05-27 12:16:50.219: Flash app: 2.75 2023-05-27 12:16:50.219: Flash protocol: 2.41 2023-05-27 12:16:50.219: SecureBoot: Enabled (Platform Secure Boot: Enabled, UEFI Secure Boot: Enabled) 2023-05-27 12:16:50.219: Flash app security: Enabled (FFU security: Enabled, RDC: Not found, Authenticated: False) 2023-05-27 12:16:50.219: JTAG: Disabled 2023-05-27 12:16:50.219: Bootloader: Lumia Bootloader Spec B 2023-05-27 12:16:50.219: ProductCode: 059X5V9 2023-05-27 12:16:50.219: ProductType: RM-1127 2023-05-27 12:17:03.388: FFU not added, because it was already present in the repository. 2023-05-27 12:17:03.388: Emergency files not added, because they were already present in the repository. 2023-05-27 12:17:03.388: Unlock Bootloader 2023-05-27 12:17:03.388: Processing resources: 2023-05-27 12:17:03.388: Profile FFU: C:\ProgramData\WPInternals\Repository\RM-1127\RM1127_1078.0042.10586.13333.15316.03531B_retail_prod_signed.ffu 2023-05-27 12:17:03.388: EDE file: C:\ProgramData\WPInternals\Repository\RM-1127\MPRG8909_fh.ede 2023-05-27 12:17:03.665: Assembling data for unlock 2023-05-27 12:17:03.665: Assembling data for unlock 2023-05-27 12:17:03.685: Attempt patch: SecureBootHack-V2-EFIESP 2023-05-27 12:17:03.689: Pattern: 0, 0 2023-05-27 12:17:03.689: Pattern: 1, 0 2023-05-27 12:17:03.689: Pattern: 2, 0 2023-05-27 12:17:03.689: Pattern: 3, 0 2023-05-27 12:17:03.689: Pattern: 4, 0 2023-05-27 12:17:03.689: Pattern: 5, 0 2023-05-27 12:17:03.689: Apply: 10.0.10586.494 2023-05-27 12:17:03.695: Edit BCD 2023-05-27 12:17:03.758: Enabling Test Signing 2023-05-27 12:17:03.758: Enabling Test Signing 2023-05-27 12:17:04.066: Initializing flash... 2023-05-27 12:17:04.066: Rebooting phone 2023-05-27 12:17:04.092: Lumia disconnected 2023-05-27 12:17:08.979: Flash App Type: FlashApp 2023-05-27 12:17:08.986: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:17:08.986: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:17:08.986: Connected device: Lumia 2023-05-27 12:17:08.986: Mode: Flash 2023-05-27 12:17:09.100: Flash app: 2.75 2023-05-27 12:17:09.100: Flash protocol: 2.41 2023-05-27 12:17:09.100: SecureBoot: Enabled (Platform Secure Boot: Enabled, UEFI Secure Boot: Enabled) 2023-05-27 12:17:09.100: Flash app security: Enabled (FFU security: Enabled, RDC: Not found, Authenticated: False) 2023-05-27 12:17:09.100: JTAG: Disabled 2023-05-27 12:17:09.114: Hashing resources... 2023-05-27 12:17:09.151: Flashing profile loaded 2023-05-27 12:17:09.562: Flashing in progress! 2023-05-27 12:17:09.562: 2023-05-27 12:17:09.658: Custom flash succeeded! 2023-05-27 12:17:09.955: Rebooting phone 2023-05-27 12:17:09.955: Phone performs hard exit 2023-05-27 12:17:10.002: Lumia disconnected 2023-05-27 12:17:10.275: Found device on interface: 71de994d-8b7c-43db-a27e-2ae7cd579a0c 2023-05-27 12:17:10.275: Device path: \?\USB#VID_05C6&PID_9008#5&310c583c&0&1#{71de994d-8b7c-43db-a27e-2ae7cd579a0c} 2023-05-27 12:17:10.275: Connected device: Lumia 2023-05-27 12:17:10.275: Mode: Qualcomm Emergency Download 9008 2023-05-27 12:17:10.277: Sending programmer: C:\ProgramData\WPInternals\Repository\RM-1127\MPRG8909_fh.ede 2023-05-27 12:17:10.278: Protocol: 0x00000002 2023-05-27 12:17:10.278: Supported: 0x00000001 2023-05-27 12:17:10.278: MaxLength: 0x00000400 2023-05-27 12:17:10.278: Mode: 0x00000000 2023-05-27 12:17:10.362: Programmer loaded into phone memory 2023-05-27 12:17:10.363: Starting programmer 2023-05-27 12:17:10.364: Programmer being launched on phone 2023-05-27 12:17:10.366: Send Hello to programmer (1) 2023-05-27 12:17:10.366: Hello packet accepted 2023-05-27 12:17:10.527: In: <?xml version="1.0" encoding="UTF-8" ?> 2023-05-27 12:17:10.528: In: <?xml version="1.0" encoding="UTF-8" ?> 2023-05-27 12:17:10.528: Incoming Hello-packets received 2023-05-27 12:17:10.736: Error on USB port! 2023-05-27 12:17:10.737: Device: QHSUSB__BULK - Qualcomm CDMA Technologies MSM 2023-05-27 12:17:10.737: Last written: 30375057000000000000000000000000 2023-05-27 12:17:10.749: Error: Failed to read from pipe. 2023-05-27 12:17:10.749: Error: Failed to read pipe on WinUSB device. 2023-05-27 12:17:10.754: at MadWizard.WinUSBNet.API.WinUSBDevice.ReadPipe(Int32 ifaceIndex, Byte pipeID, Byte[] buffer, Int32 offset, Int32 bytesToRead, UInt32& bytesRead) at MadWizard.WinUSBNet.USBPipe.Read(Byte[] buffer, Int32 offset, Int32 length) 2023-05-27 12:17:10.755: Error: The semaphore timeout period has expired. 2023-05-27 12:17:10.755: Send Hello to programmer (2) 2023-05-27 12:17:10.756: Hello packet accepted 2023-05-27 12:17:10.756: In: <?xml version="1.0" encoding="UTF-8" ?> 2023-05-27 12:17:10.756: In: <?xml version="1.0" encoding="UTF-8" ?> 2023-05-27 12:17:10.756: Incoming Hello-packets received 2023-05-27 12:17:10.756: In: <?xml version="1.0" encoding="UTF-8" ?> 2023-05-27 12:17:10.757: In: <?xml version="1.0" encoding="UTF-8" ?> 2023-05-27 12:17:10.757: Incoming Hello-response received 2023-05-27 12:17:10.757: Handshake completed with programmer in testmode 2023-05-27 12:17:10.757: Rebooting phone 2023-05-27 12:17:10.757: Out: <?xml version="1.0" ?> 2023-05-27 12:17:10.757: In: <?xml version="1.0" encoding="UTF-8" ?> 2023-05-27 12:17:10.970: Lumia disconnected 2023-05-27 12:17:14.977: Flash App Type: BootManager 2023-05-27 12:17:14.977: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:17:14.977: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:17:14.977: Connected device: Lumia 2023-05-27 12:17:14.977: Mode: Bootloader 2023-05-27 12:17:15.004: Bootmanager: 2.48 2023-05-27 12:17:15.004: Bootmanager protocol: 2.6 2023-05-27 12:17:15.004: Flash app: 2.75 2023-05-27 12:17:15.004: Flash protocol: 2.41 2023-05-27 12:17:15.004: SecureBoot: Disabled (Platform Secure Boot: Disabled, UEFI Secure Boot: Disabled) 2023-05-27 12:17:15.004: Flash app security: Disabled (FFU security: Disabled, RDC: Not found, Authenticated: False) 2023-05-27 12:17:15.004: JTAG: Enabled 2023-05-27 12:17:15.267: Phone type: RM-1127 2023-05-27 12:17:15.267: Product code: 059X5V9 2023-05-27 12:17:15.267: Root key hash: 56BDC3746226E080146D4D30C8C8432657A5282F050B1994CFE84971C586FAB9 2023-05-27 12:17:15.267: Firmware version: 01078.00042.16352.50000 2023-05-27 12:17:15.267: IMEI: 355132070314093 2023-05-27 12:17:15.267: Flash app: 2.75 2023-05-27 12:17:15.267: Flash protocol: 2.41 2023-05-27 12:17:15.267: SecureBoot: Disabled (Platform Secure Boot: Enabled, UEFI Secure Boot: Enabled) 2023-05-27 12:17:15.267: Flash app security: Enabled (FFU security: Enabled, RDC: Not found, Authenticated: False) 2023-05-27 12:17:15.267: JTAG: Disabled 2023-05-27 12:17:15.302: Hashing resources... 2023-05-27 12:17:15.519: Flashing... 2023-05-27 12:17:18.275: Rebooting phone 2023-05-27 12:17:18.277: Waiting for phone to disconnect... 2023-05-27 12:17:18.309: Lumia disconnected 2023-05-27 12:17:18.309: Waiting for phone to connect... 2023-05-27 12:17:23.041: Flash App Type: BootManager 2023-05-27 12:17:23.041: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:17:23.041: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:17:23.041: Connected device: Lumia 2023-05-27 12:17:23.041: Mode: Bootloader 2023-05-27 12:17:23.085: Bootmanager: 2.48 2023-05-27 12:17:23.085: Bootmanager protocol: 2.6 2023-05-27 12:17:23.085: Flash app: 2.75 2023-05-27 12:17:23.085: Flash protocol: 2.41 2023-05-27 12:17:23.085: SecureBoot: Disabled (Platform Secure Boot: Disabled, UEFI Secure Boot: Disabled) 2023-05-27 12:17:23.085: Flash app security: Disabled (FFU security: Disabled, RDC: Not found, Authenticated: False) 2023-05-27 12:17:23.085: JTAG: Enabled 2023-05-27 12:20:23.111: Error on USB port! 2023-05-27 12:20:23.111: Device: Lumia BootMgr - Microsoft 2023-05-27 12:20:23.111: Last written: 4E4F4B44 2023-05-27 12:20:23.111: Error: Failed to read from pipe. 2023-05-27 12:20:23.111: Error: Failed to read pipe on WinUSB device. 2023-05-27 12:20:23.111: at MadWizard.WinUSBNet.API.WinUSBDevice.ReadPipe(Int32 ifaceIndex, Byte pipeID, Byte[] buffer, Int32 offset, Int32 bytesToRead, UInt32& bytesRead) at MadWizard.WinUSBNet.USBPipe.Read(Byte[] buffer, Int32 offset, Int32 length) 2023-05-27 12:20:23.111: Error: A device attached to the system is not functioning. 2023-05-27 12:20:23.112: Error on USB port! 2023-05-27 12:20:23.112: Device: Lumia BootMgr - Microsoft 2023-05-27 12:20:23.112: Last written: 4E4F4B56 2023-05-27 12:20:23.112: Error: Failed to write to pipe: 4E4F4B56 2023-05-27 12:20:23.112: Error: Failed to write pipe on WinUSB device. 2023-05-27 12:20:23.112: at MadWizard.WinUSBNet.API.WinUSBDevice.WritePipe(Int32 ifaceIndex, Byte pipeID, Byte[] buffer, Int32 offset, Int32 length) at MadWizard.WinUSBNet.USBPipe.Write(Byte[] buffer, Int32 offset, Int32 length) 2023-05-27 12:20:23.112: Error: A device which does not exist was specified. 2023-05-27 12:20:23.113: Error: Failed to write to pipe: 4E4F4B56 2023-05-27 12:20:23.116: at MadWizard.WinUSBNet.USBPipe.LogAndThrowException(Exception Ex) at MadWizard.WinUSBNet.USBPipe.Write(Byte[] buffer, Int32 offset, Int32 length) at WPinternals.NokiaPhoneModel.ExecuteRawMethod(Byte[] RawMethod, Int32 Length) at WPinternals.NokiaPhoneModel.ExecuteRawMethod(Byte[] RawMethod) at WPinternals.NokiaFlashModel.ReadPhoneInfo(Boolean ExtendedInfo) at WPinternals.SwitchModeViewModel.SwitchFromFlashToMassStorageMode(Boolean Continuation) at WPinternals.SwitchModeViewModel.StartSwitch() at WPinternals.SwitchModeViewModel..ctor(PhoneNotifierViewModel PhoneNotifier, Nullable1 TargetMode, ModeSwitchProgressHandler ModeSwitchProgress, ModeSwitchErrorHandler ModeSwitchError, ModeSwitchSuccessHandler ModeSwitchSuccess, SetWorkingStatus SetWorkingStatus, UpdateWorkingStatus UpdateWorkingStatus) at WPinternals.SwitchModeViewModel.SwitchToWithStatus(PhoneNotifierViewModel Notifier, Nullable1 TargetMode, SetWorkingStatus SetWorkingStatus, UpdateWorkingStatus UpdateWorkingStatus, String RequestedVolumeForMassStorage) at WPinternals.LumiaUnlockBootloaderViewModel.LumiaUnlockUEFI(PhoneNotifierViewModel Notifier, String ProfileFFUPath, String EDEPath, String SupportedFFUPath, SetWorkingStatus SetWorkingStatus, UpdateWorkingStatus UpdateWorkingStatus, ExitSuccess ExitSuccess, ExitFailure ExitFailure, Boolean ExperimentalSpecBEFIESPUnlock, Boolean ExperimentalSpecAEFIESPUnlock, Boolean ReUnlockDevice) 2023-05-27 12:20:23.116: Error: Failed to write pipe on WinUSB device. 2023-05-27 12:20:23.116: at MadWizard.WinUSBNet.API.WinUSBDevice.WritePipe(Int32 ifaceIndex, Byte pipeID, Byte[] buffer, Int32 offset, Int32 length) at MadWizard.WinUSBNet.USBPipe.Write(Byte[] buffer, Int32 offset, Int32 length) 2023-05-27 12:20:23.116: Error: A device which does not exist was specified. 2023-05-27 12:20:23.116: Problem detected, rolling back... 2023-05-27 12:20:23.119: Error on USB port! 2023-05-27 12:20:23.119: Device: Lumia BootMgr - Microsoft 2023-05-27 12:20:23.119: Last written: 4E4F4B56 2023-05-27 12:20:23.119: Error: Failed to write to pipe: 4E4F4B56 2023-05-27 12:20:23.119: Error: Failed to write pipe on WinUSB device. 2023-05-27 12:20:23.119: at MadWizard.WinUSBNet.API.WinUSBDevice.WritePipe(Int32 ifaceIndex, Byte pipeID, Byte[] buffer, Int32 offset, Int32 length) at MadWizard.WinUSBNet.USBPipe.Write(Byte[] buffer, Int32 offset, Int32 length) 2023-05-27 12:20:23.119: Error: A device which does not exist was specified. 2023-05-27 12:20:23.119: Error: Failed to write to pipe: 4E4F4B56 2023-05-27 12:20:23.120: at MadWizard.WinUSBNet.USBPipe.LogAndThrowException(Exception Ex) at MadWizard.WinUSBNet.USBPipe.Write(Byte[] buffer, Int32 offset, Int32 length) at WPinternals.NokiaPhoneModel.ExecuteRawMethod(Byte[] RawMethod, Int32 Length) at WPinternals.NokiaPhoneModel.ExecuteRawMethod(Byte[] RawMethod) at WPinternals.NokiaFlashModel.ReadPhoneInfo(Boolean ExtendedInfo) at WPinternals.LumiaUnlockBootloaderViewModel.LumiaFlashParts(PhoneNotifierViewModel Notifier, String FFUPath, Boolean PerformFullFlashFirst, Boolean SkipWrite, List`1 Parts, Boolean DoResetFirst, Boolean ClearFlashingStatusAtEnd, Boolean CheckSectorAlignment, Boolean ShowProgress, Boolean Experimental, SetWorkingStatus SetWorkingStatus, UpdateWorkingStatus UpdateWorkingStatus, ExitSuccess ExitSuccess, ExitFailure ExitFailure, String EDEPath) at WPinternals.LumiaUnlockBootloaderViewModel.LumiaUnlockUEFI(PhoneNotifierViewModel Notifier, String ProfileFFUPath, String EDEPath, String SupportedFFUPath, SetWorkingStatus SetWorkingStatus, UpdateWorkingStatus UpdateWorkingStatus, ExitSuccess ExitSuccess, ExitFailure ExitFailure, Boolean ExperimentalSpecBEFIESPUnlock, Boolean ExperimentalSpecAEFIESPUnlock, Boolean ReUnlockDevice) 2023-05-27 12:20:23.120: Error: Failed to write pipe on WinUSB device. 2023-05-27 12:20:23.120: at MadWizard.WinUSBNet.API.WinUSBDevice.WritePipe(Int32 ifaceIndex, Byte pipeID, Byte[] buffer, Int32 offset, Int32 length) at MadWizard.WinUSBNet.USBPipe.Write(Byte[] buffer, Int32 offset, Int32 length) 2023-05-27 12:20:23.120: Error: A device which does not exist was specified. 2023-05-27 12:20:23.121: Failed to write to pipe: 4E4F4B56 2023-05-27 12:20:23.138: Lumia disconnected 2023-05-27 12:21:06.220: Flash App Type: BootManager 2023-05-27 12:21:06.220: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:21:06.220: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:21:06.220: Connected device: Lumia 2023-05-27 12:21:06.220: Mode: Bootloader 2023-05-27 12:21:12.209: Lumia disconnected 2023-05-27 12:21:55.313: Flash App Type: BootManager 2023-05-27 12:21:55.313: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:21:55.313: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:21:55.313: Connected device: Lumia 2023-05-27 12:21:55.313: Mode: Bootloader 2023-05-27 12:22:01.310: Lumia disconnected 2023-05-27 12:22:44.511: Flash App Type: BootManager 2023-05-27 12:22:44.511: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:22:44.511: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:22:44.511: Connected device: Lumia 2023-05-27 12:22:44.511: Mode: Bootloader 2023-05-27 12:22:50.503: Lumia disconnected 2023-05-27 12:23:33.679: Flash App Type: BootManager 2023-05-27 12:23:33.679: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:23:33.679: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:23:33.679: Connected device: Lumia 2023-05-27 12:23:33.679: Mode: Bootloader 2023-05-27 12:23:39.664: Lumia disconnected 2023-05-27 12:24:22.867: Flash App Type: BootManager 2023-05-27 12:24:22.867: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:24:22.867: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:24:22.867: Connected device: Lumia 2023-05-27 12:24:22.867: Mode: Bootloader 2023-05-27 12:24:28.860: Lumia disconnected 2023-05-27 12:25:12.027: Flash App Type: BootManager 2023-05-27 12:25:12.027: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:25:12.027: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:25:12.027: Connected device: Lumia 2023-05-27 12:25:12.027: Mode: Bootloader 2023-05-27 12:25:18.011: Lumia disconnected 2023-05-27 12:25:59.535: Found device on interface: 4d1e55b2-f16f-11cf-88cb-001111000030 2023-05-27 12:25:59.535: Device path: \?\HID#VID_05C6&PID_F006#6&14976d43&1&0000#{4d1e55b2-f16f-11cf-88cb-001111000030} 2023-05-27 12:25:59.535: Connected device: Lumia 2023-05-27 12:25:59.535: Mode: Qualcomm Emergency Charging F006 2023-05-27 12:26:06.821: Flash App Type: BootManager 2023-05-27 12:26:06.821: Found device on interface: 9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc 2023-05-27 12:26:06.821: Device path: \?\USB#VID_045E&PID_0A02#5&310c583c&0&1#{9e3bd5f7-9690-4fcc-8810-3e2650cd6ecc} 2023-05-27 12:26:06.821: Connected device: Lumia 2023-05-27 12:26:06.821: Mode: Bootloader 2023-05-27 12:26:12.803: Lumia disconnected

[gus33000]

What's the CPU vendor out of curiosity? AMD? Intel? What generation if possible? Trying to gather what controllers are commonly seeing this behavior, i have some ideas to tackle this as well but need to know the issue at scale

[xplanthris]

Intel

[xplanthris]

However an AMD laptop has the same problems

[gus33000]

and the generation of both?

[xplanthris]

5950X for the AMD and Core I7 10510U

[gus33000]

USB-C or USB-A controller? What's the max speed supported on both controllers?

[xplanthris]

USB-A, how do I figure out the max speed part

[gus33000]

See the answer on this page: https://superuser.com/questions/478184/verifying-usb-connection-speed-usb-3-or-usb-2

[ZecosMAX]

@gus33000 lumia 550 has a micro-usb 2.0 port shouldn't PC port even if it is USB 3.0 roll back to 2.0?

[gus33000]

@gus33000 lumia 550 has a micro-usb 2.0 port shouldn't PC port even if it is USB 3.0 roll back to 2.0?

Yes but this isn't why I am asking above questions here. I am trying to get a repro environment going.

[xplanthris]

i couldnt get the speeds but according to one of the answers there are rates and so high for the intel laptop and full for the amd

[xplanthris]

also now for other devices ive noticed that wpinternals doesnt acknoledge the device sometimes in flash mode

[immortal640]

Description The bootloader fails to unlock every time on two laptops with the same error of failed to write to pipe 4r4f4b584652004

Steps To Reproduce Go to unlock the bootloader add all the required files start wait get the error after it attempts to flash the unlocked bootloader (part 1)

Expected behavior The bootloader should be unlocked normally.

WPinternals Version v2.9.2

Windows Version Windows 11 22H2 22621.1702

Phone model Lumia 640XL non LTE DualSim

Relevant Assets WPInternals.log