After a bad crash I transferred into a Microheli carbon fiber body. The 350 flew okay, but was drifting, so I tried to bind in accelerometer calibration mode. It wouldn't bind that way, and now it goes into fast blinking blue light mode even when I have the transmitter on.

I'm using a DX6i that binds fine to other aircraft. The 350 has a V1 main board with the little copper receiver antenna, which appears to be undamaged. Running V2 firmware.

I'm going to try installing the V3 firmware when I get the cable, per Horizon's suggestion (they won't repair it because I replaced the body, even though it is a frame available on their site...), but I don't have high hopes that will fix it.

I guess the last resort is replacing the entire main board, right? I can't just get the QX2/3 receiver antenna and plug it into the original QX1 board, right?

Thanks in advance.