A nice puzzle. If I am not mistaken then it It is not so hard and can be solved similarly to the usual Minesweeper, uncovering cells which are empty, and marking cells where a mine has to be.
Finally, there remains only five mines to detect.
002F201 #. FF10 00 # 22#5# 10 11 .#F #. 1 21 .. .1 ##1 ###F FF # 1 1 34 #F 0002F F 3## 001 # F212F## # 001F # 102 21 2 3 F 2 3F 110 ## F ### F3 # # # 5 #F 1F 22F FF F F 20113 . ..#F10001FF11#.
Now, thanks to Jaap Scherphuis and OP, who recalled me that all possible gray flags are shown, we can detect all mines but two.
002F201 # FF10 00 # 22#5# 10 11 .#F ## 1 21 # 1 ##1 ###F FF # 1 1 34 #F 0002F F 3## 001 # F212F## # 001F # 102 21 2 3 F 2 3F 110 ## F ### F3 # # # 5 #F 1F 22F FF F F 20113 . ##F10001FF11#.
So near the bottom right corner is at least one mine. Since there cannot be exactly one mine, there are two mines. Finally we obtain.
002F201 # FF10 00 # 22#5# 10 11 #F ## 1 21 # 1 ##1 ###F FF # 1 1 34 #F 0002F F 3## 001 # F212F## # 001F # 102 21 2 3 F 2 3F 110 ## F ### F3 # # # 5 #F 1F 22F FF F F 20113 # ##F10001FF11##