01-25-2019, 08:29 AM
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#1 |
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Junior Member
 Posts: 1
Karma: 10
Join Date: Jan 2019
Device: Amazon Kindle PW4
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Kindle Firmware 5.10.2 PW4 Downgrade
Hello everybody. Yesterday I got the new PW4. I turned it on, connected to WiFi and linked it with my Amazon account. From the box I had 5.10.0.2 frimware. And it updated automatically to 5.10.2. Now from what I read, I can't do JB on this frimware version and I would like to know if it possible to downgrade on 5.10.0.2 or previous frimware versions.
Thanks in advance. |
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01-25-2019, 09:37 AM
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#2 | |
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Going Viral
 
Posts: 17,212
Karma: 18210809
Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
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Quote:
If you could do a downgrade to an earlier version, it would be listed on this site (as that is considered a jail break vector). No listing == not possible <- simple 
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02-08-2019, 08:42 PM
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#3 |
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Member
Posts: 11
Karma: 100150
Join Date: Jan 2019
Device: Kindle Paperwhite KPW4
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I'm trying to JB a Kindle 4 PW using the serial port and I'm stuck, if it's posssible to downgrade from an OTA upgrade can you please explain how ? None of the current serial Jailbreak explanations work as the KPW4 boot process does not offer access to a shell of any kind and just runs into a fastboot mode which appears to have limited functionality.
Could you please explain how is it possible to use fastboot to downgrade to a prior version ? as an alternative method I have used kindletool to extract a rootfs for the firmware version currently installed would it work to add the developer key to the rootfs.img and then flash it using fastboot (does it need to be signed for fastboot to install it)? Thanks fitz |
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02-17-2019, 01:16 PM
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#4 |
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Member
Posts: 11
Karma: 100150
Join Date: Jan 2019
Device: Kindle Paperwhite KPW4
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Last edited by fitz0303; 02-17-2019 at 02:01 PM. Reason: point to correct post |
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02-17-2019, 06:22 PM
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#5 |
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Enthusiast
Posts: 25
Karma: 12
Join Date: Nov 2018
Location: Lyon, France
Device: Kindle Oasis 3, Kindle PW4
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@fitz0303 : Same conclusion here https://www.mobileread.com/forums/sh...d.php?t=313438
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