@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:
Does this device need a firmware patch (if so how) or is there another method for using unlocked maps.
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