Hello, i am new to the forum... I recently had upgraded my router firmware to the EU version of the firmware by accident, unable to downgrade back to the us version, i tried to push the update through tftp. I now have a brick! I will have the required hardware to get into the console in a few days.

My question is, what commands would i need to use to get the firmware properly "installed" to the internal flash. 

These commands are for a different router, i just want to know if these would work also with the AC3200, if not what commands would i need to use?

1. tftpboot 0x80000000 XXXX.bin

2. erase 0x9f020000 +0x3c0000

3. cp.b 0x80000000 0x9f020000 0x3c0000

i have also seen

2. erase 0x9f020000 +7b0000

3. cp.b 0x81000000 0x9f020000 0x7b000