06-03-2017, 05:54 PM | #1 |
Enthusiast
Posts: 31
Karma: 10
Join Date: Jun 2017
Device: Kindle Paperwhite 3 32G
|
KPW3-32 debricking
Hello there.
So, after misunderstanding some bad translation, I flashed bad system update (a normal KPW3 one) binary into my device. Then, it rebooted into the booting screen, and I cannot reboot or find it in my PC as well. I tried to connect it by TTL serial, but after booting nothing was written to PUTTy. I thought it was GND wire's fault, then tried to solder that again. Then of my bad soldering skill, the tin plate was removed. OK.. Now I am trying to redo. Does anybody know how to get that update file into kindle with serial? |
06-03-2017, 06:35 PM | #2 |
Going Viral
Posts: 17,212
Karma: 18210809
Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
|
Follow this:
https://www.mobileread.com/forums/sh...d.php?t=287032 The only difference will be the name of the update file you use. Procedure will be the same. We don't have links to the Amazon update files for the PW3-32, you'll have to find those on Amazon Japan. |
Advert | |
|
06-03-2017, 06:51 PM | #3 |
Guru
Posts: 645
Karma: 1888888
Join Date: Jun 2009
Device: prs-505, Kindle Keyboard 3g, PW3
|
You can wire to ground nearly anywhere on the device. I did my ground under the contacts for one of the screws that hold the board onto the screen, those copper circles are ground.
Also if the serial pads on the front of the board are too small to solder to, I ended up soldering to the back of the board ( you will need really thin wire in order to put it back on ) You can see my pictures in the last post of this thread, on mine the serial pads on the back were labeled TM800 and TM801, this matches the 'P800 SERIAL DEBUG' listed on the front of the board. https://www.mobileread.com/forums/sh...2&postcount=40 |
06-04-2017, 05:42 AM | #4 | |
Enthusiast
Posts: 31
Karma: 10
Join Date: Jun 2017
Device: Kindle Paperwhite 3 32G
|
Quote:
Is that update binary also corrupting the diags system? Or maybe it is really only my bad soldering skill... Btw the serial to USB connector is OK, tested on RPi. Last edited by Hexadecimal; 06-04-2017 at 05:45 AM. |
|
06-04-2017, 05:43 AM | #5 | |
Enthusiast
Posts: 31
Karma: 10
Join Date: Jun 2017
Device: Kindle Paperwhite 3 32G
|
Quote:
|
|
Advert | |
|
06-04-2017, 08:36 AM | #6 |
Going Viral
Posts: 17,212
Karma: 18210809
Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
|
Most likely, you have Tx, Rx reversed.
Use: Tx -> Rx Rx <- Tx Be certain you are using the correct interface voltage (1.8v lvttl). Check that the serial port configuration is set properly: 115200,8,N,1 If it does not work, you have done something wrong. It can not 'go bad' without physical damage to the SoC or the motherboard. Ref: https://www.mobileread.com/forums/sh...d.php?t=267541 Part 3, Step 3 Read all parts, all steps, even if you are not using Windows, there is a lot of information in that thread you will find useful. Note: All touchscreen devices are the same, with two exceptions: The physical location of the serial port (the pin-out pattern is the same on all) ; The name of the update file used ; Tell us what PC, OS, and Terminal emulator program you are using. It is difficult to provide help in a vacuum of context. Unless you start typing things that we do not tell you to type, your diags system is safe from harm. Only you can screw it up. Last edited by knc1; 06-04-2017 at 09:22 AM. |
06-04-2017, 06:18 PM | #7 | |
Enthusiast
Posts: 31
Karma: 10
Join Date: Jun 2017
Device: Kindle Paperwhite 3 32G
|
Quote:
I am using a self-assembled PC. The CPU is e3-1230 v5. My system is Windows 7 with SP1, x64. I'm just using PUTTy to do this. All these thing are tested worked in a plain situation. Well... I have to go to school now. Maybe next weekend I will give it a try. |
|
06-04-2017, 06:22 PM | #8 |
Going Viral
Posts: 17,212
Karma: 18210809
Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
|
If you have checked everything else, then you most likely are not using the required 1.8volt interface level to the serial port.
Note: The same serial port is used, in succession: SoC built-in ROM code ; U-Boot ; Linux kernel ; So there is plenty to be seen. Unless you have fried the serial port with the wrong voltage or made a wiring error. Those are the only choices at this point. |
06-05-2017, 05:32 AM | #9 | |
Enthusiast
Posts: 31
Karma: 10
Join Date: Jun 2017
Device: Kindle Paperwhite 3 32G
|
Quote:
I hope this will not be too high for those chip... Last edited by Hexadecimal; 06-05-2017 at 05:36 AM. |
|
06-05-2017, 07:42 AM | #10 | |
Going Viral
Posts: 17,212
Karma: 18210809
Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
|
Quote:
Could be you have gotten lucky and not fried the interface, or more likely unlucky. It seems strange that you would think that a 3.3 volt chip would have a 5.0 volt interface (not that it is impossible, but highly unlikely). Even stranger that you would not have checked it before connecting to it. |
|
06-06-2017, 05:27 AM | #11 | |
Enthusiast
Posts: 31
Karma: 10
Join Date: Jun 2017
Device: Kindle Paperwhite 3 32G
|
Quote:
|
|
06-06-2017, 05:29 AM | #12 | |
Enthusiast
Posts: 31
Karma: 10
Join Date: Jun 2017
Device: Kindle Paperwhite 3 32G
|
Quote:
|
|
06-06-2017, 07:43 AM | #13 |
Going Viral
Posts: 17,212
Karma: 18210809
Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
|
|
06-06-2017, 03:03 PM | #14 |
Guru
Posts: 645
Karma: 1888888
Join Date: Jun 2009
Device: prs-505, Kindle Keyboard 3g, PW3
|
If I didn't cross the wires board RX is on top, board TX is on bottom, matching the front. ( circled in purple ), but you can see that I have tape over them, so I'm not sure which on is 800 and which is 801 anymore
|
06-07-2017, 01:17 AM | #15 |
Enthusiast
Posts: 31
Karma: 10
Join Date: Jun 2017
Device: Kindle Paperwhite 3 32G
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Your opinions wanted on a second Kpw3 | SonDan1 | Amazon Kindle | 25 | 11-12-2016 03:49 PM |
Timedlock on KPW3 | Elendiar | Kindle Developer's Corner | 10 | 10-23-2016 04:57 AM |
Why always a .1 version for each of the kpw3 firmware update? | ecc29 | Kindle Developer's Corner | 6 | 04-29-2016 07:56 PM |
KPW3 or KV? | henders254 | Amazon Kindle | 6 | 04-06-2016 12:16 PM |
Rumor: KPW3 Coming Q2 2014 | daffy4u | Amazon Kindle | 163 | 09-18-2014 07:09 PM |