Crack the application signature with apk editor (delete a few numbers at will, don't delete letters)

The version number that failed to be modified is 9.9.9. Remember to modify it by serial number! !

For example, sd maid version 3. 14, serial number is 3 14.

The revised version is 9.9.9, and the serial number is 9990 (remember to add 0 at the end).

If you don't understand, ask again, adopt first, thank you! !