Firts thanks for your answer,
My history:
it happened after I disassembled everything the gps to check the antenna, when reassembling, I am not wary of the power button, the rubber broke and pressed power. addition of the battery, the gps opened in calibration mode, I did nothing and removed the battery. subsequently no touchscreen works!
I undid the lcd ribbon several times, no better!
I think removing the battery in calibration mode without adjusting anything was the problem
- i had thought of downgrading the firmware but not tried, i will try find one tuto for to do it!
- And it does not take a method that I am obliged to place the GPS in preboot mode (because not Touchscreen currently)
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