If you remove the 8GR battery pack, you will see a silver-grey label on the back of the 8GR. You should also have a spare one in the 8GR's boxed items.
Then carefully work a small blade (jeweller's) screwdriver around the EDGE of this label (it's really stuck on with 3M glue!) and remove it, you'll see a small slide switch (set to the right LEAVFE IT ALONE this is for doing firmwre updates using the serial cable, and a SMD 0-ohm resister to the right.
Crush that SMD resistor with needlenose pliers and do a full reset of the 8GR (make sure that you've backed up your memories and settings with or just create new memory).
You know have opened up the tx for MARS/CAP and other use (FRS/GMRS, marine).
Według tej instrukcji, pod baterią masz przyklejoną membranę, trzeba ją zdjąć i usunąć mały opornik SMD o wartości 0 ohm po czym zdłożyć wszystko do kupy i zrobić pełen restart.

Mateusz SQ6NET/MM0WRO
http://sq6net.blogspot.com
http://sq6net.blogspot.com