Post Description

The RT3 maps are only compatible with correct software version. 
How do you know if you have the correct software version? 
1) Switch the power on
2) Hold down the MENU button until you get the extended menu 
3) Select DEVICE DESCRIPTION 
4) The software version will then appear 
If your software version exceeds 5.5 or 6.6 then your 
software allready has been upgraded. 

If no correct sw is installed, following sw will help:
Update for VAN versions:
rt3595

Update for CAN Versions:
663b890
If the sys has an RDS button, its an VAN system.
Update only with the engine running.
Burn preferred with Verbatim cd's on the slowest speed possible.