Disable signature verification for V20 specifically

[interruptingcow]

I have
LG V20 H990DS, rooted, TWRP installed, custom kernel (as per dirtysanta post), xposed installed

Since installing xposed (might be coincidental) I can not install any app (either via Play Store or adb install. The error I get in logcat is:
Failure [INSTALL_PARSE_FAILED_UNEXPECTED_EXCEPTION: Failed reading classes.dex in [email protected]: META-INF/MANIFEST.MF has invalid digest for classes.dex in classes.dex]

I posted this in the n00b-friedly Q&A forum and someone suggested it was an issue with signatures, so I googled and there are ways to disable signature verification. Not sure if this is a wise thing to do, but I think i need to try. The problem is the solutions all require Lucky Patcher or some Xposed app. But I can't install any app.

So, knowing I am falling for the whole XY Problem, can anyone suggest a way of disabling signature verification (or indeed solving the actual problem) without re-flashing everything again. I am thinking of some V20-compatible flashable zip or something maybe???

 

[Still_living714]

In my opinion I would suggest to reflash, stay with stock kernel with Xposed. You don't want to go through all of this just to install an app when clearly something you flashed isn't working right

 

[interruptingcow]

Right, I have been experimenting with all sorts to avoid reflashing but nothing worked so I reflashed, and... still not working.

Any other ideas?

 

[Still_living714]

Right, I have been experimenting with all sorts to avoid reflashing but nothing worked so I reflashed, and... still not working.

Any other ideas?

When you mean reflashed, do you mean dirty or clean installation?

 

[interruptingcow]

When you mean reflashed, do you mean dirty or clean installation?

dirty. Am just preparing all the files now for a clean install which is only option left available as far as I can see. I wonder if a different kernel would help?

 

[interruptingcow]

I have an update on this.

I did a totally clean wipe and re-root, which in itself had issues but eventually worked. All was working fine right up until I installed modded google play. Since then I get the same issue as mentioned. I uninstalled it and reverted to normal googple play but I still get the error. I guess I have sort of found the issue, and next time I won't install it.

So, any ideas on
1. Why I am getting the issue?
2. How to fix it without going through the re-root.

Thank you.

 

[Still_living714]

I have an update on this.

I did a totally clean wipe and re-root, which in itself had issues but eventually worked. All was working fine right up until I installed modded google play. Since then I get the same issue as mentioned. I uninstalled it and reverted to normal googple play but I still get the error. I guess I have sort of found the issue, and next time I won't install it.

So, any ideas on
1. Why I am getting the issue?
2. How to fix it without going through the re-root.

Thank you.

I've had the same problem installing Modded playstore. For some reason Modded playstore works on all my devices except my V20. I would suggest giving up installing it as I did. Also why would you have to reroot?

 

[interruptingcow]

Because that is the only way I have found to be able to install any new apps. Otherwise I get errors similar to

PackageInstaller: Commit of session 1370272024 failed: Failed reading classes.dex in [email protected]: META-INF/MANIFEST.MF has invalid digest for classes.dex in classes.dex

 

[interruptingcow]

Well I found the solution and a way of installing modded google play. Although I don't really understand the reason. As I was going to wipe the phone anyway I thought I would play around. So...

I tried to install modded google play - still same issue
From Lucky Patcher I removed patches from core.jar - suddenly I could install apps again.
I successfully installed modded google play - this needs Signature Verification True
I patched Signature Verification - modded google play works and I can install apps

So the issue was with the Lucky patcher "Disable .apk Signature Verification". When patched I got the dex error from my post. With it unpatched all works fine.

Thanks for all who helped.

 

[plasmar]

does this still work? I seem to always end up with playstore not functioning correctly, shows as though the applications I purchased as not purchased; and in-app purchase emulation doesn't function?.... not sure if I'm following your instructions on removing core.jar but I tried removing it and instaling core patch to disable signiture verification through edxposed but I'm not sure???

 

[interruptingcow]

Yes it still works fine. IAP and everything works as normal.

Lucky patcher -- Patch to Android -- Remove all patches from core.jar

Lucky Patcher -- Patch to Android -- Signature Verification status always True
Lucky Patcher -- Patch to Android -- Disable .apk signature verification
Lucky Patcher -- Patch to Android -- Disable Signature Verification in the pacvkage manager

 

[plasmar]

Yes it still works fine. IAP and everything works as normal.

Lucky patcher -- Patch to Android -- Remove all patches from core.jar

Lucky Patcher -- Patch to Android -- Signature Verification status always True
Lucky Patcher -- Patch to Android -- Disable .apk signature verification
Lucky Patcher -- Patch to Android -- Disable Signature Verification in the pacvkage manager

thanks for the reply and instructions...... I managed to get lp working(emulation and all) using either corepatch or the module for magisk.... but there's still something funky that either stops stuff from installing off playstore and/or not as apk's without resigning them; will try this method and see how it does in comparison....... unrelated question, any clue if m3u's work at all or if there's a method to get them to open in music players?(not sure if user issue or device issue)

 

[interruptingcow]

Sorry I don't use m3u so I do not know.