Mobileread
How to Downgrade PW 1 ca from 5.6.1.1 to 5.3.3 and maybe PW2
#1  holocen 08-24-2015, 06:53 PM
How to Downgrade Paperwhite 1 Canada from 5.6.1.1 to 5.3.3

Download earlier update file from Amazon: Kindle Paperwhite 1 Update 5.3.3
https://s3.amazonaws.com/G7G_FirmwareUpdates_WebDownloads/update_kindle_5.3.3.bin
Disable wifi on your Paperwhite 1 (airplane mode).
Connect your Kindle Paperwhite 1 to your computer (DO NOT DISCONNECT UNTIL LAST STEP!).
Copy the bin file you downloaded in step 1 to root folder of PW1.
Wait at least 2 minutes after copy has completed.
Push and hold power button until your PW1 restarts (the led blinks orange and light turns on at the screen).
Wait until the PW1 has installed the upgrade (really a downgrade).
Now you can DISCONNECT from your computer.

Tested and working on Paperwhite 1 I assume it should work on Paperwhite 2.

Original article:
http://blog.the-ebook-reader.com/2014/08/11/kindle-paperwhite-2-software-update-5-4-5-1/#comment-143579
All credits goes to David!
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#2  dongqiyer 08-24-2015, 09:10 PM
Have your PW1 get jailbreaked before downgrading? It seems that my PW2 downgrading from FW 5.6.2.1 to 5.4.3 doesn't work.
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#3  knc1 08-24-2015, 10:04 PM
Quote dongqiyer
Have your PW1 get jailbreaked before downgrading? It seems that my PW2 downgrading from FW 5.6.2.1 to 5.4.3 doesn't work.
As described, having a jail break (certificate) installed should not matter, the post describes using an Amazon update package.
The Amazon packages are signed with Amazon's certificate keys, not ours (which is what our 'jail break' is, a signature certificate).
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#4  knc1 08-24-2015, 10:15 PM
Quote holocen
- - - -
Original article:
http://blog.the-ebook-reader.com/2014/08/11/kindle-paperwhite-2-software-update-5-4-5-1/#comment-143579
All credits goes to David!
A very similar method is described here:
http://www.mobileread.com/forums/sho...70&postcount=1
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#5  dongqiyer 08-24-2015, 10:16 PM
Quote knc1
As described, having a jail break (certificate) installed should not matter, the post describes using an Amazon update package.
The Amazon packages are signed with Amazon's certificate keys, not ours (which is what our 'jail break' is, a signature certificate).
Many thanks for your answer to junior's question.
Hoping good news for FW 5.6.1 upers' JB coming soon.
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#6  eschwartz 08-25-2015, 01:37 AM
Interesting. I thought Amazon had blocked this, a/k/a the infamous "downgrade attack" error.

Did that *only* block the Update Your Kindle route?
Did the person who discovered that Amazon gem not check the boot-time updater as well?
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#7  holocen 08-25-2015, 03:54 AM
Quote dongqiyer
Have your PW1 get jailbreaked before downgrading? It seems that my PW2 downgrading from FW 5.6.2.1 to 5.4.3 doesn't work.
No.
Quote eschwartz
Did that *only* block the Update Your Kindle route?
Did the person who discovered that Amazon gem not check the boot-time updater as well?
I don't use update your kindle from menu for anything else except KUAL applications and don't have intention to upgrade to latest firmware again. The second question I don't understand.
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#8  NiLuJe 08-25-2015, 10:02 AM
@eschwartz: It is implemented at the recovery updater level.

Best guess is they forgot to merge the relevant parts for the non-Wario (i.e., PW1) branch of the code...
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#9  LiquidHg 07-22-2016, 10:31 PM


I was successfully able to downgrade my US Kindle PW1 from 5.6.1.1 to 5.3.3 using this post.
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#10  hiroshitran 08-09-2016, 06:14 AM

Thank you . It worked for my kindle pw1 US 3g
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