Go Supreme dead - can't reset.
Purchased in 2018 it was working fine until recently now it won't boot normally - a screen appears with a monitor and GPS device showing with a red cross.
I have attempted to reset using instructions on the site but when I am at the diagnostic info page and press power button 3 times (1,2,3 quickly) it just reboots and does not go into recovery procedure.
Any suggestions as to how to reset the device would be welcome. I have e-mailed TomTom support but their advice does not work and they have given up.