This is a tutorial for a RGH 3.0 mod on a corona v1 or v2 4gb motherboard using the 4gb usb tool from weekendmodder.com. If your having problems dumping a 4gb nand this is the video for you .I could not get it to dump with the picoflasher so I made this video for people having this problem .I hope you enjoy the video it took alot of time to put together .Please sub to the channel for more videos !!!!

buy 4gb usb tool = https://weekendmodder.com/store
resistor value = 1Kohm