Tutorial Open Sesame! (AKA., The New & Improved JailBreak Index)

[j.p.s]

Originally Posted by kapas

Hello.
My Kindle is a 10th gen ( KT4 ) and with the firmware 5.12.1 (3552150044) is it possible to jailbreak it?

Not at this time. Maybe never.

Please read the first post in this thread.

[vurt]

I'm so frigging confused. I think my Kindle Voyage was on 5.9*. It had already been jailbroken and had the screen saver hack.

I unknowingly updated to 5.12*, lost the screensaver hack, thought I'd reenable it with KUAL, KUAL doesn't launch. Came onto the forums to figure things out.

Now I'm understanding that I can only jailbreak on factory image v5.5 of Kindle Voyage, so I tried that, only to further realize since I'm on 5.12* now, I can no longer go back to 5.5 that the jailbreak requires — is that right? I'm fvcked?

[NiLuJe]

@vurt: Reinstall the latest hotfix, update MRPI, switch to KUAL coplate.

If, and only if, the hotfix install fails, you're screwed.

[vurt]

Originally Posted by NiLuJe

@vurt: Reinstall the latest hotfix, update MRPI, switch to KUAL coplate.

If, and only if, the hotfix install fails, you're screwed.

Wow thank you so much, that worked! I needed KUAL coplate, not KUAL (though I don't understand why). I had KUAL previously.

So since my Voyage had already been jailbroken, it should survive future firmware updates, I just have to go through all of this again?

Sorry I had to ask, I do this so sporadically, every time there's an update, I'm relearning everything again plus factoring the newer processes that's changed or updated since the last time I did it.

[knc1]

So block OTA updates, take control of your life.

[ilovejedd]

Originally Posted by knc1

So block OTA updates, take control of your life.

Isn't it already too late at this point (5.12)?

[dhdurgee]

Originally Posted by ilovejedd

Isn't it already too late at this point (5.12)?

There is only airplane mode to keep from updating further at this point. Not convenient, but workable as long as side-loading is still supported.

Dave

[j.p.s]

Originally Posted by knc1

So block OTA updates, take control of your life.

Originally Posted by ilovejedd

Isn't it already too late at this point (5.12)?

Has that been settled?

[ilovejedd]

Originally Posted by j.p.s

Has that been settled?

I had 5.11.* on a non-JB PW2 and it's on 5.12.1 now. I remember putting the update.bin.tmp.partial folder on that after it auto-updated from 5.10 to 5.11 but I'm not 100% certain.

Anyway, created the blocking folder again to confirm.

[fallenfuzz]

Just an update.
My old good jailbroken PW2 jumped to 5.12.1, installed latest hotfix, MRPI, KUAL 2.7, koreader - all good!

[NiLuJe]

Updated the first post to reiterate that FW 5.12.x is really evil. For sure.

The bridge has been updated. It might help if it's up to date before the FW upgrade. Or it might not. It definitely will have some side-effects, though, so the tweak only applies to FW 5.12.x.

You really shouldn't be running FW 5.12.x in the first place anyway, so, meh.

[LjCK]

Hi,

Being a newbie, just want to double check because you are mentioning 5.12.x, probably only for devices that already had JB done before upgrade...

I have a KT4W 5.11.2 (factory image purchased in the US, turned on airplane mode) and
PW4 that upgraded to 5.12.1, before I applied any JB.

Is my option only to.... wait? How about soldering serial... Would that mean the whole deal (together with U-boot) to go back, at least to 5.11.0 for the KT4? Is it possible?

I did try to read everything before the post, but would like your confirmation... great stuff happening on MR, really a cool place.

Thanks!

[NiLuJe]

@LjCK:

The only factory image we have for the KT4 is 5.11.0, so, I'm not quite sure what you're saying.

Serial access can be used for jailbreaking. For people familiar with how Kindles work, it can also be used to facilitate manual downgrades (and I wouldn't recommend that people try to do that unless they *really* understand what they're doing).

The caveat being that in both cases, we only know how to do it on devices using the older partition layout.
I'm fairly sure that makes both the PW4 and the KT4 at best a question mark on that front. Which means you can probably wait all you want, but that won't really help ;p.

[LjCK]

@NiLuJe:
I understand the confusion, my bad... I mean that the KT4 2019, shipped with the 5.11.2 version. Unfortunately, I don't have the 5.11.2 image. Otherwise, you'd already get a PM with more details

I think that I have enough experience to do the operations through serial.
I even purchased the KT4 to use it as a development board with 6'' Eink Carta 1.2, touch, front light, i.MX6 SLL (integrated EPDC), additional WiFi and Bluetooth, battery and battery management, etc...
Alternatives were way too expensive and Eink doesn't even sell through their webshop to individuals.

Basically, you get all this for less that $90 USD (buy 2, 10% off... $81), had a friend bring it from the US to Europe.
So I already disassembled it, and found mobile read developer's corner

Then I though, for the first simple things that I want to do, why not use the jailbrake and reuse what the amazon team already developed, and what you guys did. Anyway, I cannot get the waveforms, and it's a big question mark about the driver itself...
So, now, I want to try NiLuJe/FBInk... but I still cannot

Don't have much time next few days, but upcoming weekend and next week... should have enough time to play around (serial, downgrade, boot from serial, etc...)

My goal is to setup Yocto from scratch and use the KT4 as development environment, but don't plan to start there.
The PW4 is something I use for reading, love to read, and update the devices as they come out....

You guys really impressed me, some really great stuff to find here!

[NiLuJe]

@LjCK: FWIW, a 5.11.2 image wouldn't help, they patched it .

You'll have to dig up the serial threads specific to those newer devices to catch up to where people usually got stuck.