Weird display intro for Volspeed v3 on the Bosch Cx geb 4 motor. Please help !

[Flo]

Hi, guys ! For one year i have Volspeed v3 on my Scott fs ebike with Bosch cx gen 4. I register two times 510 error, my firmware is old from the factory. 5 months ago i have a crash with a broken ligament so i wasn't able to pedal. But yesterday i try my ebike, was ok, but when i try to turn on the volspeed cip, i mess the buttons from purion display and weird things was shown : reset, and 10 km and 11km and so on. After this i've remember that i must push the minus button for more than 3 seconds, done that, my 43km/h tuning limited speed appear, but when i try to turn off the cip, it appear 20km/h. I remember that in the past usual it appear 25km/h, not 20 and i don't know if this is good or bad and what it means. I try the ebike like this and the motor is cut after 27km/h. Please help me if you realy know what i'm talking about. Also i need to go in a ebike service to instal a front light. I must get off the cip from my ebike or i can let him there ? Also , very important, i want to do a firmware update to get off from the anoying 510 error, i read that it exist an update who eliminate this error, but in the same time i don't want to be in danger with 504 error for my 43km/h speed limit. Also i don't need new Touring Plus mode or dynamic or something who can mess my rides because my ebike is ok with his 4 modes. Maybe it will be nice to have 85Nm, instead 75Nm . You can recommend which firmware i must choose ? Thank you and maybe you can help me. I will realy appreciate !