Thread: Firmware Update for GTMxx Traffic Receiver Type 3 software version 3.10

3.1 also not good for me, then just try to find old backup and make a modification at x1027 to 3701 and it's work.
Still need to take out this modified file and put back original backup else it will update the GTM receiver every power up.

Was not aware on checksum but it's back working condition.

Now realized my backup is 3.00 not 2.90 and this is not in update list.