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All units above the serial number 1210318 are equipped with CPU board v3.
CPU board v2
CPU board v3 (new)
10. TROUBLESHOOTING FOR CPU BOARD v2
10.1 SYSTEM MICROSD CARD LOCATION
The MicroSD card is located at back of CPU board, near top-right installation screw. It is possible to pull it
without CPU board disassembly. See picture.
CPU board front view
CPU board back view