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Hi all, Have a problem trying to flash OpenTX to my 9XR. Have connected the 9XR via the USBasp but for some reason when I go to write the firmware it only ever says "reading" but never actually writes. The USBasp seems OK because I wrote the er9X firmware no problem but when I try with Com...

Ok cheers, clears that up.

Thanks for all the help mike!

Thanks for the help. Got the converter and have it soldered together but only seem to be receiving the Rx values and not Tx values. I tried a 4 pin plug wired directly from the back of the XJT into the RS232 convertor no rule out any solder work I done but still not luck. Just wondering if you have ...

Thanks, that's alot clearer after you explained it to me. I will only be using this in the 9XR Tx anyway so the PDF you linked has it all down. Just having a look at it though it says this "As with all serial communications, care has to be taken with the names transmit (Txd) and receive (Rxd)&q...

Hi, Just wanted to ask the question is this possible, using the XJT in the 9XR and to get telemetry? I have done the mod to the Tx which is contained in this PDF Document off RCGroups PDF Document which again I don't know if its right because I have seen different guides where they don't use resisto...