the changes are correctly packed and the file is good, but when i pack it back into the original update.zip, the signature of the zip file changes and stock recovery refuses to update. I have a px5 android auto device for which i cant install cwm or twrp as the device is not officialy supported. Any help would be greatly appreciated.
To edit the file I used S.U.R by Jamflux https://github.com/jamflux/sur
my log: https://www.mediafire.com/file/qyfx2l3xn2zapx8/log.txt/file
thanks
my screen: