@kchow240869
If the firmware upgrade has disabled your zumo from reading unlocked maps, it will still be able to use patched maps [and any Open Source Garmin-compatible maps such as OSM].
Nothing further will be disclosed regarding the patching of maps, please don't ask for more info.
As said by catymag, some patched maps are available here, tell us what you're wanting or look up the [Only registered and activated users can see links. ] for your required map and then in the thread for any postings of patched map. Not anywhere near all maps are patched/patchable at present.
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