MaskRom mode

See startup mode for an introduction startup mode

"MasRrom" mode is the last line of defense against device being
bricked. Forced entry "MaskRom" involved hardware operation, have
certain risk, so only in the situation that deivce failed entering the
"Loader" mode, you can try "MaskRom" mode.

Please read carefully and operate carefully!

The operation steps are as follows:

Disconnect all power supplies.

Connect device and host PC with Double male USB data cable.

Press and hold Maskrom button on device.

Connect the power.

Wait a few seconds, release Maskrom button.

At this point, the device should go into "MaskRom mode".