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Unbrick rock2.

Is it bricked?

When writing update.img to nand RKBatchTool failes with following message: "Prepare IDB Fail" (or similar error messages like "IDB download failed" when writing to emmc with other tools) The board is "bricked". It is not really bricked, first make sure there's no SD card connected while trying to flash the device, otherwise the bootloader is corrupted at this time, you can always recover it.

Release version SoM

The emmc shortcut pin was put on the top of the som, makes it easier to unbrick it

Rock2 som shortcut.jpg

(EMMC short cut pins)

Som unbrick.jpg

To recover it:

  • 1. Plug in the power cable to DC jack and power adapter, plug in OTG USB cable to connect the board and the PC
  • 2. Connect the emmc shortcut pins with a tweezer
  • 3. Short press the reset button, after release the reset button, hold the tweezer connection for 1 second. In RKBatchTool the square icon should now show up blue (if it isn't blue, retry).
  • 4. Click the restore button and upload an update.img

Beta version SoM


For upgrade_tool under Linux, you should read Maskrom if successfully shortcut the pins.

   sudo upgrade_tool
   List of rockusb connected
   No found rockusb,Rescan press <R>,Quit press : r
   List of rockusb connected
   DevNo=1	Vid=0x2207,Pid=0x310b,LocationID=21f	   Maskrom
   Found 1 rockusb,Select input DevNo,Rescan press <R>,Quit press :1
   Rockusb>uf /tmp/radxa-rock-alip-desktop.img
   Loading firmware...

See also