Flashing CHIP on Raspberry Pi - usb_bulk_send() ERROR -7

[Superlub]

root@raspberrypi:/home/pi/Flash-CHIP/CHIP-tools# sunxi-fel -l USB device 001:027 Allwinner A13 16254291:50303743:39383030:0d4267de

root@raspberrypi:/home/pi/Flash-CHIP/CHIP-tools# FEL='sudo sunxi-fel' FASTBOOT='sudo fastboot' SNIB=false ./chip-update-firmware.sh -gn == Gui selected == == No Limit mode == == preparing images == == Local/cached probe files located == == Staging for NAND probe == Image Name: detect NAND Created: Tue Oct 15 21:28:18 2019 Image Type: ARM Linux Script (uncompressed) Data Size: 97 Bytes = 0.09 kB = 0.00 MB Load Address: 00000000 Entry Point: 00000000 Contents: Image 0: 89 Bytes = 0.09 kB = 0.00 MB waiting for fel...OK usb_bulk_send() ERROR -7: Operation timed out

[53K70R29]

Could it be your USB cable is inadequate? Received this a couple of times then changed to a better cable and this solved it!

[Thore-Krug]

Its Power related, Pls use a Proper Power supply and cable

[Superlub]

I tried several USB cables on various Pi's and a VM virtualbox (Debian) on Windows 10.

All ending with the usb_bulk_send() error -7.

Maybe this is relevant:

https://github.com/linux-sunxi/sunxi-tools/blob/master/fel_lib.c { /*

• With no progress notifications, we'll use the maximum chunk size.
• Otherwise, it's useful to lower the size (have more chunks) to get
• more frequent status updates. 128 KiB per request seem suitable.

• (Worst case of "slow" transfers -> one update every two seconds.) / size_t max_chunk = progress ? 128 1024 : AW_USB_MAX_BULK_SEND;

  size_t chunk; int rc, sent; while (length > 0) { chunk = length < max_chunk ? length : max_chunk; rc = libusb_bulk_transfer(usb, ep, (void *)data, chunk, &sent, USB_TIMEOUT); if (rc != 0) usb_error(rc, "usb_bulk_send()", 2); length -= sent; data += sent;

  if (progress)
      progress_update(sent); /* notification after each chunk */

  } }