I have a browning that I got from cabelas a few months ago,I would have bought the better one from TCP but had a gift card.Issue is it says no sd card no matter what card I try.The cards aren't locked
What brand SD cards are you using and have they been used in other devices ?
Sandisk cards are all I use with my Brownings, Stealthcams etc. and as long as the cards are not inserted or removed while the power is on they have been trouble free.
As far as formatting once all of the data has been retrieved from the card the first thing I do after the camera is powered up is to format the card to erase everything stored on the card. I have a Dell pc I can insert my card into to download my photos for viewing and can also format my cards there if I choose, it sometimes removes data that the trail camera doesn't.
If nothing above works I would contact.....https://browningtrailcameras.zendesk.com/hc/en-us/articles/115005388708-SD-Card-General and submit a request on the bottom of the page.
I suspect it is the cards causing the issues but they should provide an answer for you if you supply the model number..
Good luck.