Downgrading from 5.7.2.1 (jailbroken Kindle via diags) - Page 7

riothamus · 05-13-2022, 07:42 AM

Quote:

Originally Posted by shamanNS

After you've booted PW3 into diagnostics you can overwrite existing firmware version with whatever older firmware version you want (while keeping in mind that 5.6.5 was the factory firmware for PW3)

Thanks! Anywhere you can point to to some directions on this? Is this something that will require messing with via serial?

shamanNS · 05-13-2022, 09:50 AM

For PW3 with a jailbreak you have an option to install Rescue Pack and Coward's Rescue Pack (you need BOTH, CRP is an "addon" on top of RP, so first install RP then CRP) and then you can boot into diagnostics mode without needing serial connection: you just connect the Kindle to charge and select restart option in Kindle UI and it will boot into diagnostics.

That is the "Coward's Rescue Pack" functionality: check if device is charging on restart / reboot if it is boot into diagnostics instead of booting into main OS, if not charging boot into main OS.
It is a nice safety blanket I wish I had on my PW5 that I've managed to brick. Unlike PW3 PW5 doesn't have diagnostics (RP & CRP aren't compatible with newer Kindle models) and also doesn't have serial (at least not on a production board OR not in the same place like on the photos from FCC) points.

riothamus · 05-20-2022, 10:44 PM

Quote:

Originally Posted by shamanNS

For PW3 with a jailbreak you have an option to install Rescue Pack and Coward's Rescue Pack (you need BOTH, CRP is an "addon" on top of RP, so first install RP then CRP) and then you can boot into diagnostics mode without needing serial connection: you just connect the Kindle to charge and select restart option in Kindle UI and it will boot into diagnostics.

That is the "Coward's Rescue Pack" functionality: check if device is charging on restart / reboot if it is boot into diagnostics instead of booting into main OS, if not charging boot into main OS.
It is a nice safety blanket I wish I had on my PW5 that I've managed to brick. Unlike PW3 PW5 doesn't have diagnostics (RP & CRP aren't compatible with newer Kindle models) and also doesn't have serial (at least not on a production board OR not in the same place like on the photos from FCC) points.

Thanks, I'll give this a try when I get a chance this weekend. If I can downgrade my PW3 then I can still use it (still hate the new UI).

shamanNS · 05-21-2022, 09:22 AM

You could maybe try this new downgrade approach, instead of the old diagnostics + using "dd" commands:

https://www.mobileread.com/forums/sh...d.php?t=346784

If I were you I would still before trying any of the downgrade methods first make sure that I have functional boot to diagnostics and tested SSH connection between Kindle and the computer.

If I were to try using this new method of tricking the Kindle to install older firmware bin I would definitely first do a factory reset while still on newer firmware and then do the downgrade.

05-13-2022, 09:50 AM	#92
shamanNS Guru Posts: 972 Karma: 10500010 Join Date: Feb 2010 Location: Serbia Device: Kindle PW5, Kobo Libra 2, Kindle PW1	For PW3 with a jailbreak you have an option to install Rescue Pack and Coward's Rescue Pack (you need BOTH, CRP is an "addon" on top of RP, so first install RP then CRP) and then you can boot into diagnostics mode without needing serial connection: you just connect the Kindle to charge and select restart option in Kindle UI and it will boot into diagnostics. That is the "Coward's Rescue Pack" functionality: check if device is charging on restart / reboot if it is boot into diagnostics instead of booting into main OS, if not charging boot into main OS. It is a nice safety blanket I wish I had on my PW5 that I've managed to brick. Unlike PW3 PW5 doesn't have diagnostics (RP & CRP aren't compatible with newer Kindle models) and also doesn't have serial (at least not on a production board OR not in the same place like on the photos from FCC) points. Last edited by shamanNS; 05-13-2022 at 10:00 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Downgrading jailbroken PW2	phramenma	Kindle Developer's Corner	8	05-18-2014 02:25 PM
Kindle 4 Crashed in Diags Mode	drajov	Amazon Kindle	6	07-25-2012 03:34 PM
HELP kindle 4 diags	hawk72	Kindle Developer's Corner	3	05-03-2012 09:42 AM
Kindle Touch Stuck at diags	sole	Kindle Developer's Corner	13	05-01-2012 08:47 AM
Downgrading Kindle Touch	Pink Floyd	Amazon Kindle	4	01-22-2012 03:15 PM

05-21-2022, 09:22 AM	#94
shamanNS Guru Posts: 972 Karma: 10500010 Join Date: Feb 2010 Location: Serbia Device: Kindle PW5, Kobo Libra 2, Kindle PW1	You could maybe try this new downgrade approach, instead of the old diagnostics + using "dd" commands: https://www.mobileread.com/forums/sh...d.php?t=346784 If I were you I would still before trying any of the downgrade methods first make sure that I have functional boot to diagnostics and tested SSH connection between Kindle and the computer. If I were to try using this new method of tricking the Kindle to install older firmware bin I would definitely first do a factory reset while still on newer firmware and then do the downgrade.