Thread: Garmin Thailand Street Map v.9.0 (TSM9.0) Thai & Eng

Yes, you'll get lane assist capabilities on your unit (assuming the map has it). TSM9.0 does not have lane assist,
but CNSEA4.5 does.

Sorry, I don't have an English link. I assume you're in Thailand and you're using TSM9.0 or CNSEA4.5 with your unit.

First you have to make sure that your unit does not have the new S4 mainboard. If you just bought the unit,
it probably is and you'll get a brick if you flash it.

If your motherboard is S2 or S3 then you're safe. To check your board version, press the battery icon at the
upper right of the unit for about 8 seconds, you'll be in the diagnostic mode. The board version is next to the
unit model at the top of the screen.

And where did you buy your unit from? I want to know what firmware it is using at the moment.
You can check that at the about page on your unit.

Let me know and we'll go from there.