The procedure should be the following:
1) Disconnect your device from the power source.
2) Connect some pins on the PCB.
3) Connect your device to the PC and run updater.exe with appropriate RGN file.
4) Connect your device to the power source and turn it on.
5) Wait for updater.exe to detect your device.
If your device is detected as a mass storage device then you've failed. Goto 1) and connect some other pins.
The problem is that connecting random pins is generally dangerous, you can burn some circuity on the PCB. I don't know which pins have to be connected, so I'm waiting for Alexander2010 to asnwer, but he seems to be busy.
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