Sorry but i havent solve my problem. I only wanted to thank you for this text. its easy written
Thank you again. I tried it a few times. After i install 3.55 downgrader, i am on the version 3.55 in the system (system data).
then i use toggle qa. after that, i press 'install package files' install qa over the button (L1+L2+L3+D-Paddown+R1+R2). And after that, i install 3.55 V3.7 and if i go to the system data, it shows me 4.25.
And i really dont want to spam this beautiful thread. if i have solved my problem, i will delete my posts
sorry for asking so much