- in hidden folder [garmindevice]\.System\ delete the files gmapprom.img, gmapprom.unl and gmapprom.sum after backup on PC
- download new unlocked image version (normal NT for 1xxx, Unicode for 2xxx and 3xxx) and copy it after extraction (gmapsupp.img or gmapprom.img) to folder [garmindevice]\.System\ - if it's named gmapsupp.img rename it to gmapprom.img (take care for exactly right name)
- replace *.jcv in folder [garmindevice]\.System\JCV\ with new downloaded version
- if exists, replace files in folder
[garmindevice]\.System\ASR\ (only *.asr, *.srx)
[garmindevice]\.System\SQLite\ (only biggest *.db)
[garmindevice]\.System\G2S\ or [garmindevice]\.System\G2S\ (only some files)
and file [garmindevice]\.System\gmap3d.img
with new downloaded version files
Gps
