Worth a shot
You only put the UNZIPPED ( .bin ) file on as card right? And in the ROOT directory?( root is the main directory, when you view the card, you'll see it there , NOT in a folder or sub directory )
Also, if you go into phantom help Archeives, You can find most of the older firmwares, you can step back only 1 firmware from where you are, so for example if your craft is 1.8.0, then you can go up to 1.9.0, or back to 1.7.0. You might try to revert to older, then back to recent!
Tx same way
You can upgrade through go app, by clicking it, or revert by holding TOP RIGHT SYMBOL ( go app home screen, where you choose your craft ) hold that symbol for a couple seconds, then let go, a screen will pop up, giving you any options you have, choose firmware reversion, and install!
Also, card readers , and adaptors SUCK, try plugging your cable from computer to gimbal, and copy .bin file right onto card. turn off phantom, unplug cable, turn on phantom, should upload firmware!
J Dot
