A MX900 can revert back to original firmware to use the much easier to use dedicated MX900 software via a button sequence on the remote.
This MAY be the process if anyone else would chime in (Boot Loader);
1.Open up battery compartment & remove 1 cell.
2.Press & hold the "On" & "Mute" buttons, then reinsert the 4th cell. You should get a blue screen with the word "Loader" on the page heading.
3.Download your programming to the remote. If you get an error message to the USB connection, ignore it, your file should have transfered successfully. If not, run the boot loader procedure again.
Last edited by videobruce on July 18, 2018 09:02.