After a one year break because of some other projects, I've tried to recompile one of my applications in B4A 10.2 and to install it on my Google Pixel 3a with Android 11.
Changed android:targetSdkVersion to 30. Unfortunately I get the following error in IDE:
B4X:
Installing file to device. Error
adb: failed to install abc.apk: Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES: Scanning Failed.: No signature found in package of version 2 or newer for package ro.ccc.abc]
This solved the issue. Thanks. What is strange is that if I use 30 (it was 28 in the past), the warning "The recommended value for android:targetSdkVersion is 29 or above (manifest editor). (warning #31)" is still present in IDE, but if I use 29, the warning disappear."