Hi i brought a Dingoo off Ebay, and it came with the Dual Boot already installed, but not Dingux.

The Dingoo has Firmware 1.1

I was considering updating to fix the Y/B Button Problem and maybe other improvements.

My question is, if i update the firmware to say 1.20 would it overwrite my Dual Boot...

I heard their was a way to install firmware that you just place file on Dingoo and reset and hold down.

Is this method only used for custom Firmware, or can Official be used, and would doing update remove the Dual Boot?

And can you down grade back to Original firmware at latter date without also lossing dual boot?

Thank You