Thanks Bompa,
Still a few questions. I searched the thread, but can't find TESTMODE.KEY. Then i understand that when i boot in testmode on the F9220BT, im able to make a copy of RenewallFlib.dll on the inserted SD card?
After that i need to modify them, save them on the SD card, start the F9220BT again in testmode, delete the current RenewallFlib.dll and copy the modified RenewallFlib.dll from the SD card to the F9220BT?
Then i save update 2017 on the SD card with the correct CARDINFO and then insert SD card to the F9220BT?
If that's the whole process, then it's clear for me