So I purchased a back up mini 3 battery on Amazon (non plus) charged it up but got the incompatible error message. Sending it back but now can’t find a reliable replacement source. It was a renewed dji battery also. Tried to use the assistance 2 software but would no work to update f/w. Currently dji out of stock on mini 3 battery and with the imposed fcc band who know if they will ever be in stock. Looked on eBay but all are refurbished or knock offs. Any good one on Amazon?