MK4 Nav, doesn't boot up when the car is unlocked, only when the key is turned.. Settings dont stay either when the car turns off..

Guessing its corrupt memory.. tried loading v21.1 firmware and then back to v32, not fixed..

Anything other than memory causing the prob? Unit reads CDs, not DVDs, bad laser but its a seperate issue..

Anyone in the US able to do flash reprogramming of the memory chip? Or does anyone have the code from a working MK4 to flash to the chip?

Also, anyone here know the brand/model of the memory chips that need reflash (asking before i need to take the drive out of the car again..)

Thanks.