Hey Bartman, i just bought the M480 and i too am having some issues, i followed the manual to the T(upgraded to V2.2), when doing the initial binding i get the green (led) solid or slow blinking if i connect the GPS, but as soon as i power down and reboot, fast red blinking(everytime cannot get it to go Green), which per manual is a low voltage alarm, this is not the case, i can see voltage @23.5, calibrated sticks turned off Dual rates, etc....by the way i'm using a DX18 with two SAT's connected to APS-M... now i swapped out the APS-M for a NAZA V2(just for testing), and was able to get it to ARM/MOTOR SPINS UP/ETC, but now i can't control retracts, so in your previous post, you stated to cut back the boot on the cable from the PCU to the APS-M, today i did kinda wiggle the end @ the PCU, and then the Navigation lights came on on the motors and they spun for a second and turned off, so if i pull back the boot what am i looking for (is it possible that one wire isn't making a connection, since i can communicate with the APS-M on PC), plus i ordered another cable(new version), also like to know your recommendations if i want you go with using CC3D as the FC and what to use to control my retracts, i just like that the CC3D has more features than NAZA or ALIGN in the software platform