Having a difficult time on downgrading

[NiLuJe]

Originally Posted by nicknackpaddywak

But all this is by the assumption of me that the Kindle OS would render KUAL useless after the restart. Perhaps I am terribly wrong.

Since I can't even fathom what you could be meaning by that first sentence, the second one is probably true ;o).

[nicknackpaddywak]

Originally Posted by NiLuJe

Completely different blank screen, yeah (there are *a lot* of ways to softlock the Kindle UI ;o)).

Because maybe third time's the charm: check the MRPI logs (at the *very* least! On the upside, they're much much more human-readable than the syslogs, and they won't have rotated the important stuff right when you need it ;p).

I think what I needed was simply patience. I ran ;log mrpi and then let it sit there on that blank screen. I waited a few days and restarted it. Voila! KUAL is back and running!

I am still mad at Amazon though,

[nicknackpaddywak]

Alright, Update on the situation:

I used downgrader to downgrade my kindle to 5.13.3, and then forced it to reset by using DO_FACTORY_RESET file. I am aware of the fact that version numbers might not match and confuse Amazon, so I wanted to Jailbreak it and install 5.14.2 to be on the safe side. Somehow, before I could use Kindlebreak to jailbreak it, I found out it was actually jailbroken because ;log mrpi worked when I put the MRPI and KUAL files in there.

Still in airplane mode, I have updated it to 5.14.2 with the bin file in attempt to correct the version numbers.

But how did the command work AFTER a reset? Is this "jailbreak" genuine? I had come to believe that resetting would mean losing the Jailbreak.

Now I need to connect to internet quickly to download some dictionaries and connect my Amazon account, but I am afraid without a "genuine" jailbreak I may not be so lucky this time if it updated to a higher version.

I have checked out the thread about renaming the OTA binaries, but I also read some threads, with one specifically claiming that their KOA3 updated despite the binary change

Any advice please? Thanks in advance.

[dhdurgee]

Originally Posted by nicknackpaddywak

Alright, Update on the situation:

I used downgrader to downgrade my kindle to 5.13.3, and then forced it to reset by using DO_FACTORY_RESET file. I am aware of the fact that version numbers might not match and confuse Amazon, so I wanted to Jailbreak it and install 5.14.2 to be on the safe side. Somehow, before I could use Kindlebreak to jailbreak it, I found out it was actually jailbroken because ;log mrpi worked when I put the MRPI and KUAL files in there.

Still in airplane mode, I have updated it to 5.14.2 with the bin file in attempt to correct the version numbers.

But how did the command work AFTER a reset? Is this "jailbreak" genuine? I had come to believe that resetting would mean losing the Jailbreak.

Now I need to connect to internet quickly to download some dictionaries and connect my Amazon account, but I am afraid without a "genuine" jailbreak I may not be so lucky this time if it updated to a higher version.

I have checked out the thread about renaming the OTA binaries, but I also read some threads, with one specifically claiming that their KOA3 updated despite the binary change

Any advice please? Thanks in advance.

I believe the one who posted about the update after installing thought that installing the rename extension was all that was necessary when you need to install and run it for it to work.

Dave

[j.p.s]

Originally Posted by nicknackpaddywak

Alright, Update on the situation:

I used downgrader to downgrade my kindle to 5.13.3, and then forced it to reset by using DO_FACTORY_RESET file. I am aware of the fact that version numbers might not match and confuse Amazon, so I wanted to Jailbreak it and install 5.14.2 to be on the safe side. Somehow, before I could use Kindlebreak to jailbreak it, I found out it was actually jailbroken because ;log mrpi worked when I put the MRPI and KUAL files in there.

I'm glad you were able to downgrade. Congratulations.

Technically, everything >= 5.11 is less "safe" the higher the version.
Once you downgraded the versions matched and after the upgrade 5.14.2, of course, the versions match. But version mismatch can very much be a feature.

Still in airplane mode, I have updated it to 5.14.2 with the bin file in attempt to correct the version numbers.

But how did the command work AFTER a reset? Is this "jailbreak" genuine? I had come to believe that resetting would mean losing the Jailbreak.

Resetting (with hotfix/bridge in place), in itself does not lose the jailbreak but does make the jailbreak more vulnerable.

Now I need to connect to internet quickly to download some dictionaries and connect my Amazon account, but I am afraid without a "genuine" jailbreak I may not be so lucky this time if it updated to a higher version.

I have checked out the thread about renaming the OTA binaries, but I also read some threads, with one specifically claiming that their KOA3 updated despite the binary change

Any advice please? Thanks in advance.

What dhdurgee wrote regarding rename OTA binaries, however I'm not sure whether renaming OTA binaries affects downloading dictionaries or registering.

If the kindle is registered, you might be able to download the dictionaries with a computer from amazon.com using the download for transfer over USB option.

Your safest bet might be to downgrade to 5.9.6, create the download blocker directory, register, download dictionaries OTA direct to kindle, then decide which firmware version is the best compromise for your goals, and install that firmware.

[nicknackpaddywak]

Originally Posted by j.p.s

I'm glad you were able to downgrade. Congratulations.

Thanks.

Originally Posted by j.p.s

Technically, everything >= 5.11 is less "safe" the higher the version.
Once you downgraded the versions matched and after the upgrade 5.14.2, of course, the versions match. But version mismatch can very much be a feature.

Yeah I know. But you could look at this situation in another way. Compared to off-brand Chinese Android E-readers which have absolutely no security updates at all, Kindles are at least better for the normal person.
One could argue that it is overkill for a device that displays e-books though.
I believe that version mismatch is now not an issue now after the manual update. What I meant by safe was that this version could still be Jailbreak-able (although harder) should something go wrong.

Originally Posted by j.p.s

Resetting (with hotfix/bridge in place), in itself does not lose the jailbreak but does make the jailbreak more vulnerable.

I see. But what does vulnerable mean exactly here? Can I just install the hotfix again and make it less vulnerable?

Originally Posted by j.p.s

What dhdurgee wrote regarding rename OTA binaries, however I'm not sure whether renaming OTA binaries affects downloading dictionaries or registering.

If the kindle is registered, you might be able to download the dictionaries with a computer from amazon.com using the download for transfer over USB option.

I never knew that was an option. I will try that out. However, registering the kindle still means there will be the need to connect to the internet, and here in Taiwan internet is pretty fast (unless Chinese commies do stupid stuff) which means that the update could have a chance download and install and break my Jailbreak.

Originally Posted by j.p.s

Your safest bet might be to downgrade to 5.9.6, create the download blocker directory, register, download dictionaries OTA direct to kindle, then decide which firmware version is the best compromise for your goals, and install that firmware.

This Kindle Oasis 3 is relatively new, being purchased in fall 2021, so I do not think such a version is available on this Kindle. Thanks anyway!

[dhdurgee]

Originally Posted by nicknackpaddywak

Thanks.

Yeah I know. But you could look at this situation in another way. Compared to off-brand Chinese Android E-readers which have absolutely no security updates at all, Kindles are at least better for the normal person.
One could argue that it is overkill for a device that displays e-books though.
I believe that version mismatch is now not an issue now after the manual update. What I meant by safe was that this version could still be Jailbreak-able (although harder) should something go wrong.





I see. But what does vulnerable mean exactly here? Can I just install the hotfix again and make it less vulnerable?



I never knew that was an option. I will try that out. However, registering the kindle still means there will be the need to connect to the internet, and here in Taiwan internet is pretty fast (unless Chinese commies do stupid stuff) which means that the update could have a chance download and install and break my Jailbreak.



This Kindle Oasis 3 is relatively new, being purchased in fall 2021, so I do not think such a version is available on this Kindle. Thanks anyway!

As someone noted earlier another option to ensure there is no possibility of a firmware update while online you can fill up the disk space to leave less than 200mb of available storage. That should leave plenty of room for any dictionary or book downloads but make sure a firmware update is impossible.

Dave

[nicknackpaddywak]

Originally Posted by dhdurgee

As someone noted earlier another option to ensure there is no possibility of a firmware update while online you can fill up the disk space to leave less than 200mb of available storage. That should leave plenty of room for any dictionary or book downloads but make sure a firmware update is impossible.

Dave

I have seen such a method on this forum...
Personally I think this is a genius piece of advice. Although I have a Kindle Oasis 3 32GB version so this space-filling is not as easy as it was on the KPW2 with only 2GB...
Nevertheless, I will try that and give an update.

PS I should not have mentioned Chinese commies doing stupid stuff earlier, but it seems that they have cut the internet cable linking one of our islands...