Custom update package

[xse]

Hi

We are trying to build our first own custom update package for a MKIII device.

We have extracted the 109k4 ota zip and removed / replaced some things. further we have modified the updater-script and then did build the zip with:

cd <ota directory>
zip -r9 ../ota.zip *
cd ..
java -jar signapk.jar -w platform.x509.pem platform.pk8 ota.zip ota-signed.zip

We used the keys from here, but we are getting an error when trying to install the update:

Verifying update package...
E: failed to verify whole-file signature
E: signature verification failed
Installation aborted

Did we miss something during creation of the zip file (is there maybe some leftover of the 109k4 update package we would have to remove? in particular in META-INF )
Or are we using the wrong keys and this is why the signature check fails (how can we debug this?)

Any help would be appreciated

[no_spam_for_me]

Becuase these keys are for apk and not for update-package...

[ant]

Hi

We are trying to build our first own custom update package for a MKIII device.

We have extracted the 109k4 ota zip and removed / replaced some things. further we have modified the updater-script

Any help would be appreciated

Hi, I use the update_creator. Its pretty easy to use if you have signed zip files before. It works with windows.
I can't remember where I originally downloaded it from, (maybe at freaktab???)

You can download it from here

Hope this helps you out

[xse]

Thank you guys.

Turns out that we were using the wrong keys. We did compare the used ones with /system/etc/security/otacerts.zip and were able to use the correct test keys.

[ant]

Thank you guys.

Turns out that we were using the wrong keys. We did compare the used ones with /system/etc/security/otacerts.zip and were able to use the correct test keys.

Sweet news buddy, nothing like a successful flash!.... hope your custom firmware works well with the mxIII, best of luck.