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Posted at 12/10/2018 15:31:38
1#
Try to dd Firefly-rk3399_xubuntu1604_SD_201705151725.img directly to /dev/mmcblk1 . It might work.
Please try another USB port in your PC for upgrade_tool to work. In my case, I often find the USB 3.0 port
has more luck than the USB 2.0 port. YMMV.
Did you also try to flash the firmware to eMMC in MaskRom mode? (But if you clear the eMMC, it should go
to that mode. In case of something wrong, you can follow the instructions in the Wiki to force into MaskRom
mode. )
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