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Can't access after flashing - All lights steady on the device #2

Closed Fallen94 closed 5 years ago

Fallen94 commented 5 years ago

I've used lede-17.01.4-ramips-mt7620-u35wf-sysupgrade.bin to upgrade the stock 1.4.0 OS. After the flash all lights started glowing and I couldn't access the device. No WiFi is broadcasted from the device, there is no activity on the LAN port, but both light are steady lit even if there's no cable connected. Not able to SSH into it as well. Any ideas what I could try or is this perma-bricked?

Update: Also no activity on LAN that Wireshark notices. Update 2: It works as 3.0 storage Update 3: This is the model that I have, around 3 minutes he disassembles it and it shows the two board. https://www.youtube.com/watch?v=VQNBlikykCo Was this the model that this release was intended for? The upper board is labeled as HSEN-300M-MT7620A-V2.0. The lower one is BS-U35WF-ASM1153-V2.0 Update 4: Looking over the previous issue post I realized we have the same board. Not sure why the flash didn't work in my scenario. I've not yet had to console access something, but I'll try to get some equipment and then solder an rs232 to the board, hopefully it didn't get fried but the constantly glowing LED on the LAN port could indicate that.

recent2018 commented 5 years ago

RS232

Fallen94 wrote:

I've used lede-17.01.4-ramips-mt7620-u35wf-sysupgrade.bin to upgrade the stock 1.4.0 OS. After the flash all lights started glowing and I couldn't access the device. No WiFi is broadcasted from the device, there is no activity on the LAN port, but both light are steady lit even if there's no cable connected. Not able to SSH into it as well. Any ideas what I could try or is this perma-bricked?

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Fallen94 commented 5 years ago

Trying to find someone who can solder this as I'm having no luck at all with the small contacts. On the picture you posted on the first thread http://cs5-3.4pda.to/13822143/IMG_20180907_163146.jpg?s=00000000b9bb05565c3c528e0000000004a820616150a8a908168c1b403fb5bb Do I need to solder a wire over both of the circled contact on the TX?

marcopolo11 commented 5 years ago

Both the points are same however, don't try to solder yourself if you are not comfortable with such small welding. I did this mistake and might have fried my board (not in use, lying with a friend).

Fallen94 commented 5 years ago

I've checked the board, seems to be working the same way like before I soldered it. I'll ask around tomorrow if somebody can do it under a microscope so the board doesn't get damaged. Just to understand this better, the board should show output as soon as the device powers on? If the firmware failed and there is no OS booting would the RS232 connection provide me with a "backdoor" where I can apply a new OS?

recent2018 commented 5 years ago

Yes. you can pour any firmware I have now worth Prometheus from Padavan https://www.youtube.com/watch?v=I42Saet_i34

soldering - necessarily flux, can be cleaned with a scalpel gently with a magnifying glass. if you are not able, then it is better to find someone who can. really very small sites.

Fallen94 wrote:

I've checked the board, seems to be working the same way like before I soldered it. I'll ask around tomorrow if somebody can do it under a microscope so the board doesn't get damaged. Just to understand this better, the board should show output as soon as the device powers on? If the firmware failed and there is no OS booting would the RS232 connection provide me with a "backdoor" where I can apply a new OS?

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Fallen94 commented 5 years ago

Soldered up, accessed my USB to RS232 COM port over PuTTY and Termite 3.4, getting gibberish on 57600 baud rate and on 9600

https://i.ibb.co/YDs0sjf/gibberish.png

https://i.ibb.co/M8DFqk8/0-02-05-d866b8b952666cf93c49d5820c4a24f8a3d86c19daf285489bbea7a274be7ea1-d15a860.jpg

https://i.ibb.co/bWFJQXG/0-02-05-1e6556bd9b44a547d41b52f01e77bf630ed0f53ff84819e30a40a95071b5d668-cba311ae.jpg

I'm using a 30cm cable, is that too long for the serial connection to handle? I can still reach to the routers login page when everything is properly connected, so the board was not fried.

I've seen comments that my PL2303-Prolific RS232 to USB adapter might be the wrong voltage, and that I have to get the USB TTL. My USB adapter works fine with cisco switches and routers console ports. @recent2018 when you made your RS232 connection did you use a USB adapter or did you have an RS232 port integrated? Any ideas?

Update: I acquired a USB to TTL UART module CP2102, twisted the wires together (due to my soldering iron dying on me) and i'm not receiving anything on my terminal through putty and termite. I've installed the drivers for the USB and I've set the baud rate to 57600. The Rx and GND lights are constantly glowing when everything is plugged in. The Tx only glows when i push something on my keyboard while the empty terminal is open. I've checked with my multimeter that there's signal from the board contact to the pins on the USB.

https://i.ibb.co/m0BSxWd/0-02-04-82ff963aaf48b6991272c95c8412512fbfa816bd0234a28c465d35271851fa47-70c52d01.jpg

https://i.ibb.co/VS02D34/0-02-04-a914fde66c98f2978316c57e4f185167f1ca635fdf1c6114edcb2cb7aec9b924-f1076a05.jpg

https://i.ibb.co/87ZL0tp/0-02-04-963a51ca2cb8129a150e5e81d325d055dc1a5b946b4242f986899a8a4827fd6a-5e8c7a75.jpg

Update 2: Tested the USB to UART with the loopback method to make sure it's working, and it does. I've shortened the cable from the board to the USB to UART, it's about 10cm long now. Still black screen on all my terminals. I've reverted back to RS232 with the Prolific adapter, still only gibberish on all baud rates. I'm officially out of ideas so if anybody has something to add, i'm open for trying it

Update 3: IT WORKED! I was completely stupid and forgot the fact that the Rx and Tx have to be inverted.

https://i.ibb.co/7CF5Xyc/Yay.png

Fallen94 commented 5 years ago

I'm finally in the main menu and out of this whole mess. Feels good.

Thank you guys for all the assistance, couldn't have done it without your schematics.

Fallen94 commented 5 years ago

Issue is resolved.

Note to future users: If you plan on upgrading to this version, you'll have to solder yourself console access. The password has been changed and the only way to reset is through the terminal

recent2018 commented 5 years ago

treated with firmware Prometheus. everything works :)

https://www.drive2.ru/b/486456380794864115/

Fallen94 wrote:

I'm finally in the main menu and out of this whole mess. Feels good.

Was anyone successful in using the internal SATA drive as a mount point or it is it not capable of it? Currently it looks like I won't have any NAS capabilities.

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Fallen94 commented 5 years ago

treated with firmware Prometheus. everything works :) https://www.drive2.ru/b/486456380794864115/ Fallen94 wrote: … I'm finally in the main menu and out of this whole mess. Feels good. Was anyone successful in using the internal SATA drive as a mount point or it is it not capable of it? Currently it looks like I won't have any NAS capabilities. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#2 (comment)>, or mute the thread https://github.com/notifications/unsubscribe-auth/AneL_l5ims-Hlbat3cmtqfOOfWYJlWS9ks5vEnR8gaJpZM4Z9Pja.

I did too, it's amazing! Even have entware installed now and pushing all sorts of stuff to it. I didn't know this device could do so much.