Quote Originally Posted by Butters View Post
@Giomen
Because it only has the 'weak' form of MSV there's no absolute need to patch the firmware (SW). I agree that's easiest solution, especially as Montana 6x0 doesn't have GSV so it can be done with just a patched GCD file, however he can still use the non-unicode City Navigator unlocked, or change the code page in a Unicode map from 65001 to 1251 and not have to patch SW in either case. My point is this: answering "SW must be patched" isn't totally correct as there are indeed other methods for M6x0 to use unlocked maps, which is what he asked in the initial post:
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Hi guys, thanks for the comments. The maps (CN Europe 2019.2 and Garmin Topo Pro GB) were unlocked with GU+IMG .004. Both are on a card in /garmin. Both run on the 600 but on the 61o I get "cannot authenticate maps"

If I understand correctly, the 610 doesn't have advanced protection (there is no gupdate.gcd file) and so the unit can't be patched. Yet the maps still don't run. Do I need to make another change to the unlocked mao .img? If so what, and what tools do I need?

Thanks again