Help with software downgrade PW4 (5.15.1.1)

jma1 · 06-02-2023, 12:50 PM

I have a Kindle PW4 that recently auto-updated to software 5.15.1.1. If it is possible to jailbreak, install a prior version of software, and prevent auto-updates even while wifi connected, could someone point me to the correct procedures?

I just want to get back to a software version that supports the 'original' Periodical document format viewing and toolbar functionality.

Thanks in advance.

hartleyshc · 06-02-2023, 01:15 PM

It's only possible if you have previously jailbroken your device. There's a thread in this sub forum describing the process.

If you haven't previously jailbroken your device, then you'll need to wait until a new exploit is discovered/developed into a usable solution.

Your best bet is to try and keep the device on this version by keeping it in airplane mode and transfer books via USB+PC. No internet means no pushed updates.

j.p.s · 06-02-2023, 04:19 PM

No SW beak, but you can try the serial port (hardware, open case required)

https://www.mobileread.com/forums/sh...d.php?t=313438

It will be even more tricky because the way amazon stores the keys changed.

06-02-2023, 12:50 PM	#1
jma1 Connoisseur Posts: 82 Karma: 10 Join Date: Dec 2015 Device: Kindle	Help with software downgrade PW4 (5.15.1.1) I have a Kindle PW4 that recently auto-updated to software 5.15.1.1. If it is possible to jailbreak, install a prior version of software, and prevent auto-updates even while wifi connected, could someone point me to the correct procedures? I just want to get back to a software version that supports the 'original' Periodical document format viewing and toolbar functionality. Thanks in advance.

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06-02-2023, 01:15 PM	#2
hartleyshc Member Posts: 15 Karma: 10 Join Date: Dec 2010 Location: Gainesville, FL Device: Nook 1st Gen, KT4, PW4, PW5-SE	It's only possible if you have previously jailbroken your device. There's a thread in this sub forum describing the process. If you haven't previously jailbroken your device, then you'll need to wait until a new exploit is discovered/developed into a usable solution. Your best bet is to try and keep the device on this version by keeping it in airplane mode and transfer books via USB+PC. No internet means no pushed updates.

06-02-2023, 04:19 PM	#3
j.p.s Grand Sorcerer Posts: 5,285 Karma: 98804578 Join Date: Apr 2011 Device: pb360	No SW beak, but you can try the serial port (hardware, open case required) https://www.mobileread.com/forums/sh...d.php?t=313438 It will be even more tricky because the way amazon stores the keys changed.

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