JBPatch

[jation]

I am trying to change top margine on my KPW2 (5.4.5.1)
I open ReaderSDK-impl-en_GB.jar in qbe --> ReaderResources_en_GB.class --> change top margin

But whenever I press "Save method" I get this error:
Error: Instruction requires an argument of type byte at line 786, instruction "bipush"

Line 786: bipush 254 on default
Is this error in original file and I only have to change Line 786:sipush 254

Thanks!

[NiLuJe]

@jation: https://www.mobileread.com/forums/sho...d.php?t=236780

[jation]

^ Thank you, everything works fine now!

[hfpop]

Hello,
I run kpw 5.3.4 with jbpatch 4.0.0 and seem to have a problem with hyphenation. The dumb one works. The language based, does not. The books have the right language metadata. There is no dictionary installed. The JBPatch logs reports that the hyphenation files are loaded correctly. However...

Later edit: Dumb works; English works; French works; Romanian does not work. Strange.

Later edit: The Romanian hyphenation file needs edit. It lacks the classes tag. Once I added this, Romanian hyphenation works as it should

[netikja]

Sorry for that question, but is there any way to get the L/R margins smaller in case of Kindle PW2 with 5.6.1.0.6? I have it jaibroken, KUAL and MR Installer within.

[eschwartz]

kaznelson has not updated his patches for the 5.6.x firmware branch. This thread has plenty of hints for doing it yourself, though -- if you feel comfortable doing so.

[thatworkshop]

JBPatch in nature is something like Xposed for Android OS. In Xposed, we have a fail-proof way to disable Xposed patches (called modules) if things go bad and system fails to boot. At boot time, user would press certain buttons a few times as a signal to disable Xposed. The reason I'm mentioning this is that, if there was such a mechanism in JBPatch, someone like me who has a hard-earned Kindle DXG, would dare to play with it and as it modifies running process at boot time (/opt/amazon/ebook/bin/init.xargs) and on these very subtle devices, things go wrong very easily resulting in a brick.

Is there such an option possible? or done by someone?

[thatworkshop]

Has a brave (and rich ) soul had success getting JBPatch run on Kindle DX(G) (i.e. v2 devices)? My instincts (and ixtab's statement) tells me it is definitely possible, but my pocket tells me not to risk it! hehehe

[SCrid2000]

Originally Posted by eschwartz

kaznelson has not updated his patches for the 5.6.x firmware branch. This thread has plenty of hints for doing it yourself, though -- if you feel comfortable doing so.

I don't feel particularly comfortable trying, but I suppose I'll give it a go if I can figure out where where start. Seeing a how there's hundreds of posts in this thread though, I'd very much appreciate if you can give me an idea of where to start

[knc1]

Originally Posted by SCrid2000

- - - -
Seeing a how there's hundreds of posts in this thread
- - - -

thousands.

And when you find them, add them to the Wiki master index (unless they are already there).

Using the advanced search feature here will probably be required.

[thatworkshop]

Originally Posted by idoit

Has a brave (and rich ) soul had success getting JBPatch run on Kindle DX(G) (i.e. v2 devices)? My instincts (and ixtab's statement) tells me it is definitely possible, but my pocket tells me not to risk it! hehehe

Ok, that does it!
Does anyone have any last moment suggestion before I go ahead and do something dumb to get JBPatch on my DXG just like K3?

[eschwartz]

Originally Posted by SCrid2000

I don't feel particularly comfortable trying, but I suppose I'll give it a go if I can figure out where where start. Seeing a how there's hundreds of posts in this thread though, I'd very much appreciate if you can give me an idea of where to start

Java Bytecode Editor: https://www.mobileread.com/forums/sho...d.php?t=236780
kaznelson's patched jars: https://www.mobileread.com/forums/sho....php?p=2527653

What you need to patch: https://www.mobileread.com/forums/sho....php?p=2699121
or https://www.mobileread.com/forums/sho....php?p=2787641



You'll need to extract the unpatched jars from your current firmware, and patch them with JBE to add the fixed margins.

[cru5h]

Has someone tested it on 5.6.5? Will it work the same way as on previous releases?

[knc1]

Originally Posted by cru5h

Has someone tested it on 5.6.5? Will it work the same way as on previous releases?

The principle remains the same.

The names of the functinons and variables changes with every firmware build.

Everything is publicly available, the author has published in a public repository in addition to this thread.

A good understanding of Java and the CVM (hardware assisted JVM) will help anyone who wants to port this stuff to a different firmware version.

One minor note, the author has a PhD in computer science.
( Brings a new meaning to: "a good understanding". )

[sprite7]

Originally Posted by eschwartz

You'll need to extract the unpatched jars from your current firmware, and patch them with JBE to add the fixed margins.

I already have experience of editing jars with JBE for 5.4.5 fw, but how do I extract the unpatched jars? Tried usbnetwork, but couldn't make it work