[NickMayer]

need root to update coding data when start first time .
Method 1:
We install the official application from the Play Market, launch it, download the necessary files, close it. After that, we try to put on top of the attached APK.
If it is installed - everything is fine, we use it

If it says something like "Signatures do not match", but you have Root access, go to

Method 2:
2.1. We install the official application from the Play Market, launch it, download the necessary files, close it.
2.2. Copy the folder /data/data/de.appomotive.bimmercode somewhere
2.3. Uninstall the previously installed office. bimmercode app
2.4. Install the attached APK
2.5. We restore the previously copied folder /data/data/de.appomotive.bimmercode with a replacement in its rightful place
2.6. Enjoy

P.S. Save the copied folder somewhere - at least this version will continue to work...