Do yoou have any idea whether I can flash to the Singapore/Malaysia firmware for the garmin 855. Also if I do flash to the Singapore/Malaysia firmware, can I reverse it back to the US firmware in the future? Thanks.
I am not sure you can convert your 855US to Sg/Mal because no 855 series for Sg/Mal region.
The US unit that can convert to Sg/Mal are 2x5 and 7x5 (ie 775T US to 765Sg/Mal )series.
If there is the way to convert., you can reverse back to US firmware.
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