Alternative method to downgrade KT2?

DanielSt · 02-23-2022, 04:20 PM

Hello All,

I have been trying to downgrade my Kindle KT2 using the instructions found here:

https://www.mobileread.com/forums/sh...d.php?t=272132

The Kindle is already successfully jailbroken, with KUAL and Mobile Read Package Installer. I have run into a snag at the USB Networking stage (after enabling USB networking on my Kindle, the network doesn't show up on my laptop; it shows up on my friend's computer, but I have been unable to connect to it via PuTTY, and now upon trying again on my friend's computer, it is no longer possible to set the IP address of the Kindle network device for some reason...)

I am wondering if there is some alternative method of downgrading the Kindle? (I have the files of the firmware version I would like to downgrade to.)

(I'm trying in parallel to find a used Kindle online that has an older firmware version, but Amazon's automatic updates are making this extremely difficult)

Thanks in advance for your help!

eddie.t.h · 02-24-2022, 11:12 AM

As I wrote to you in another thread, the safest and easiest way is to connect through the serial port of the reader. This, of course, requires disassembling the device and the ability to solder several cables.

DanielSt · 02-24-2022, 01:57 PM

Quote:

Originally Posted by eddie.t.h

As I wrote to you in another thread, the safest and easiest way is to connect through the serial port of the reader. This, of course, requires disassembling the device and the ability to solder several cables.

Thank you for this suggestion. This would be beyond my capabilities. I have been looking for someone in my city who has experience working with and repairing kindles, if I find such a person, I will mention this. Thanks again.

eddie.t.h · 02-24-2022, 02:20 PM

You can try to install the koreader. It has a built-in ssh server and you will connect to the reader via wifi.

DanielSt · 02-24-2022, 03:54 PM

Quote:

Originally Posted by eddie.t.h

You can try to install the koreader. It has a built-in ssh server and you will connect to the reader via wifi.

Aha! Are there any more details about this in any of the threads here on mobileread? Would I connect via the Kindle's wifi?

eddie.t.h · 02-25-2022, 08:33 AM

It's not complicated. In the koreader'a menu you attach the ssh server, you can select without authorization. Then, from a computer connected to the same network, you will connect using a putty. The default port is 2222.

DanielSt · 02-25-2022, 01:18 PM

Quote:

Originally Posted by eddie.t.h

It's not complicated. In the koreader'a menu you attach the ssh server, you can select without authorization. Then, from a computer connected to the same network, you will connect using a putty. The default port is 2222.

Thank you. I get the feeling that this presupposes some knowledge/expertise (a novice like me may need some more step-by-step, detailed instructions), but I might give this a try and see if I can figure it out.

How would I then downgrade the Kindle after connecting?

eddie.t.h · 02-25-2022, 01:40 PM

You will have to follow the directions from the guide to which you gave the link. The problem may be that you will overwrite the working system. Whether it is completely safe must be said by someone smarter than me. I have never tried to do it this way, for me it is simpler through the serial port.

DanielSt · 02-25-2022, 11:27 PM

Quote:

Originally Posted by eddie.t.h

You will have to follow the directions from the guide to which you gave the link. The problem may be that you will overwrite the working system. Whether it is completely safe must be said by someone smarter than me. I have never tried to do it this way, for me it is simpler through the serial port.

Thanks for this info, much appreciated.

eddie.t.h · 02-26-2022, 06:05 AM

Quote:

Originally Posted by DanielSt

I have been looking for someone in my city who has experience working with and repairing kindles, if I find such a person, I will mention this. Thanks again.

And where are you from?

DanielSt · 02-26-2022, 01:03 PM

Quote:

Originally Posted by eddie.t.h

And where are you from?

I'm in Christchurch, New Zealand.

eddie.t.h · 02-26-2022, 01:41 PM

Quote:

Originally Posted by DanielSt

I'm in Christchurch, New Zealand.

For a moment I thought that you could send me this reader and I would do this downgrade to you. Unfortunately, I live in Poland, so the shipping costs will rather exceed the value of the device.

DanielSt · 02-26-2022, 04:03 PM

Quote:

Originally Posted by eddie.t.h

For a moment I thought that you could send me this reader and I would do this downgrade to you. Unfortunately, I live in Poland, so the shipping costs will rather exceed the value of the device.

Hey, this is a really cool proposition, thank you!! I really appreciate your offering to do this. I actually just ordered a Kindle DX graphite yesterday -- which has the most recent update, but the DX updates in recent years, I have been told, only affected the security certificates and presumably not the display. I am going to test this out, and if the display causes me problems, I may be very happy to take you up on this offer. I don't mind the postage costs if it means being able to have a Kindle I can use again.

Thank you again, I will let you know.

02-23-2022, 04:20 PM	#1
DanielSt Enthusiast Posts: 48 Karma: 10 Join Date: Jan 2022 Device: Kindle	Alternative method to downgrade KT2? Hello All, I have been trying to downgrade my Kindle KT2 using the instructions found here: https://www.mobileread.com/forums/sh...d.php?t=272132 The Kindle is already successfully jailbroken, with KUAL and Mobile Read Package Installer. I have run into a snag at the USB Networking stage (after enabling USB networking on my Kindle, the network doesn't show up on my laptop; it shows up on my friend's computer, but I have been unable to connect to it via PuTTY, and now upon trying again on my friend's computer, it is no longer possible to set the IP address of the Kindle network device for some reason...) I am wondering if there is some alternative method of downgrading the Kindle? (I have the files of the firmware version I would like to downgrade to.) (I'm trying in parallel to find a used Kindle online that has an older firmware version, but Amazon's automatic updates are making this extremely difficult) Thanks in advance for your help!

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02-24-2022, 11:12 AM	#2
eddie.t.h Addict Posts: 201 Karma: 123456 Join Date: Jan 2018 Device: Too Much Kindle :-)	As I wrote to you in another thread, the safest and easiest way is to connect through the serial port of the reader. This, of course, requires disassembling the device and the ability to solder several cables.

02-24-2022, 02:20 PM	#4
eddie.t.h Addict Posts: 201 Karma: 123456 Join Date: Jan 2018 Device: Too Much Kindle :-)	You can try to install the koreader. It has a built-in ssh server and you will connect to the reader via wifi.

02-25-2022, 08:33 AM	#6
eddie.t.h Addict Posts: 201 Karma: 123456 Join Date: Jan 2018 Device: Too Much Kindle :-)	It's not complicated. In the koreader'a menu you attach the ssh server, you can select without authorization. Then, from a computer connected to the same network, you will connect using a putty. The default port is 2222.

02-25-2022, 01:40 PM	#8
eddie.t.h Addict Posts: 201 Karma: 123456 Join Date: Jan 2018 Device: Too Much Kindle :-)	You will have to follow the directions from the guide to which you gave the link. The problem may be that you will overwrite the working system. Whether it is completely safe must be said by someone smarter than me. I have never tried to do it this way, for me it is simpler through the serial port.