PW2 How to make it usable?

evislur81 · 03-16-2021, 05:42 AM

Hello mobileread community!

I just owned a Kindle PW2 with 5.12.2 and now I wonder how I can read my PDFs with it.

I have jailbreaked a PSP some years ago, but have no experience with hardware jailbreaks. Any advices?

In the end I just want to copy my PDFs and read them.

evislur81 · 03-16-2021, 07:05 AM

I found Calibre and its usable now.
As far as I found out, its not possible yet to jailbreak it with software only, because the Version 5.12.12 has not been broken yet for PaperWhite 2 (2013).

But still, Calibre works fine and I am fine too.

mergen3107 · 03-22-2021, 10:19 PM

You can try k2pdfopt to convert your pdf files with more Kindle-friendly reflow. It has many options, have a look

Free Radical · 03-24-2021, 07:20 PM

Just bought 2 PW2s on the cheap last week on 5.12.1 and now jalbreaked with KoReader installed
https://www.mobileread.com/forums/sh...d.php?t=338268

tryol · 03-24-2021, 08:54 PM

Quote:

Originally Posted by Free Radical

Just bought 2 PW2s on the cheap last week on 5.12.1 and now jalbreaked with KoReader installed
https://www.mobileread.com/forums/sh...d.php?t=338268

Did you buy them because you saw that the Jailbreak was releasing soon or was it a coincidence?

Free Radical · 03-25-2021, 06:32 AM

Coincidence, and truth be said, I was almost about to buy a serial tool. Saved just in time :P

Sent from my Mi 9T Pro using Tapatalk

lisica · 03-25-2021, 04:29 PM

Is Koreader (2021.02) working for you guys? On my PW2 it either crashes, freezes, or reboots the device after only a couple of pages scrolled in various pdfs. There is nothing meaningful in the log file, except for "Killed", which combined with the symptoms makes me think this is ram related (out-of-memory kills). I have tried more than a few pdfs, ranging from sub-MB to 40MB, and all of them end up crashing. Could it be the Koreader became too heavy for this aging device?

NiLuJe · 03-25-2021, 04:50 PM

256MB of RAM and PDFs haven't really ever mixed well.

The stock FW becoming ever so memory hungry hasn't really helped on that front either.

You'd have to downgrade by *a lot* (say, the final ~5.6.x release) to see any meaningful changes, though. The easiest solution is to restart KOReader often, or stick to ePubs.

Or reimplement all the things that would allow you to run KOReader framework-less like on FW < 5.x.

lisica · 03-25-2021, 06:33 PM

I really need pdf reflow. K2PDFOPT would be an option if there weren't horribly broken pages, where Koreader's de-reflow comes in handy. Not to mention no preparing of the files and a million other options Koreader has.

I decided to try and see if the downgrade could bring any improvements, and it really did! Downgraded to 5.6.5 and so far so good, no crashes, and Koreader is much more responsive. As a bonus, everything survived the downgrade, didn't need to install anything.

Sol Arkite · 04-03-2021, 08:20 AM

Quote:

Originally Posted by lisica

I decided to try and see if the downgrade could bring any improvements, and it really did! Downgraded to 5.6.5 and so far so good, no crashes, and Koreader is much more responsive. As a bonus, everything survived the downgrade, didn't need to install anything.

What method did you use to downgrade?

Funtast · 06-30-2021, 02:41 PM

Quote:

Originally Posted by Sol Arkite

What method did you use to downgrade?

Can someone point me to straightforward way to downgrade? I jailbroke my pw2, installed KUAL and KOreader, but KOreader keeps crashing on me. Right now I cannot find an easy guide to downgrade. Not that I cannot invest time and use kindletool to unpack the binary and then flash it with dd after ssh through usbnet, but I really don't want to go that route.
touch /PRE_GM_DEBUGGING_FEATURES_ENABLED__REMOVE_AT_GMC didn't help :/

I am rocking the final pw2 v5.12.2.1.1

Thanks

03-16-2021, 05:42 AM	#1
evislur81 Junior Member Posts: 2 Karma: 10 Join Date: Mar 2021 Device: Kindle Paperwhite 2 FW5.12.2	How to make it usable? Hello mobileread community! I just owned a Kindle PW2 with 5.12.2 and now I wonder how I can read my PDFs with it. I have jailbreaked a PSP some years ago, but have no experience with hardware jailbreaks. Any advices? In the end I just want to copy my PDFs and read them.

03-25-2021, 04:50 PM	#8
NiLuJe BLAM! Posts: 13,477 Karma: 26012494 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	256MB of RAM and PDFs haven't really ever mixed well. The stock FW becoming ever so memory hungry hasn't really helped on that front either. You'd have to downgrade by a lot (say, the final ~5.6.x release) to see any meaningful changes, though. The easiest solution is to restart KOReader often, or stick to ePubs. Or reimplement all the things that would allow you to run KOReader framework-less like on FW < 5.x. Last edited by NiLuJe; 03-25-2021 at 04:53 PM.

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03-16-2021, 07:05 AM	#2
evislur81 Junior Member Posts: 2 Karma: 10 Join Date: Mar 2021 Device: Kindle Paperwhite 2 FW5.12.2	I found Calibre and its usable now. As far as I found out, its not possible yet to jailbreak it with software only, because the Version 5.12.12 has not been broken yet for PaperWhite 2 (2013). But still, Calibre works fine and I am fine too.

03-22-2021, 10:19 PM	#3
mergen3107 Wizard Posts: 1,060 Karma: 3000026 Join Date: Feb 2012 Location: Cape Canaveral Device: Kindle Scribe	You can try k2pdfopt to convert your pdf files with more Kindle-friendly reflow. It has many options, have a look

03-24-2021, 07:20 PM	#4
Free Radical Junior Member Posts: 7 Karma: 10 Join Date: May 2014 Device: Kindle PW2	Just bought 2 PW2s on the cheap last week on 5.12.1 and now jalbreaked with KoReader installed https://www.mobileread.com/forums/sh...d.php?t=338268

03-25-2021, 06:32 AM	#6
Free Radical Junior Member Posts: 7 Karma: 10 Join Date: May 2014 Device: Kindle PW2	Coincidence, and truth be said, I was almost about to buy a serial tool. Saved just in time :P Sent from my Mi 9T Pro using Tapatalk

03-25-2021, 04:29 PM	#7
lisica Junior Member Posts: 9 Karma: 10 Join Date: Mar 2021 Device: Kindle Paperwhite 2	Is Koreader (2021.02) working for you guys? On my PW2 it either crashes, freezes, or reboots the device after only a couple of pages scrolled in various pdfs. There is nothing meaningful in the log file, except for "Killed", which combined with the symptoms makes me think this is ram related (out-of-memory kills). I have tried more than a few pdfs, ranging from sub-MB to 40MB, and all of them end up crashing. Could it be the Koreader became too heavy for this aging device?

03-25-2021, 06:33 PM	#9
lisica Junior Member Posts: 9 Karma: 10 Join Date: Mar 2021 Device: Kindle Paperwhite 2	I really need pdf reflow. K2PDFOPT would be an option if there weren't horribly broken pages, where Koreader's de-reflow comes in handy. Not to mention no preparing of the files and a million other options Koreader has. I decided to try and see if the downgrade could bring any improvements, and it really did! Downgraded to 5.6.5 and so far so good, no crashes, and Koreader is much more responsive. As a bonus, everything survived the downgrade, didn't need to install anything.

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