It's strange, my downloadversion (see my post #44 or the direct downloadlinks Catymag has given in post #48) gives img-files with only the attribute -a- (Archive); (no -r- (only read), or -h- (hiden) or -s- (system)).
Img-unlock MagSigPatch directly works on that img-files for me (W7-32bits, administrator-rights ( for all transactions).
I confirm: no read only .IMGs for me, probably files has been replaced by Garmin after some downloads.
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