Failed update error 9-99

[T_mo_V]

unable to update because there is error 9-99 someone can help me please

[BadgerA]

Have you checked this thread? Hope it helps!

Update finishes with error

Hey guys, I’m getting the following error when I try to update to the stable or dev firmware. I’ve tried the driver fix on this thread here (PC is recognizing device as DFU in SF mode but qFlipper is not able to repair - #12 by Anthony_Parabavidez) but it’s the same result. It does appear to boot into a newly flashed device (though this could still be in a messed-up state and not apparent) I think it’s having issues with the SD Card writing or something. Anyhow, let me know what I screwed up. …

[victorn.ua]

I have the same problem … FIle uploaded to device fine, but during DFU check ( on flipper ) it raise error 9-99 … What could i do ( I tried to updated from mobile app and from mac os app woth no luck )

[victorn.ua]

I bought other sd-card ( 16 gig sandisk), before that i tried 64 and 32 gigs kingstone, And sandisk card worked well! So if you have issues like that - try other sd-card )

[Dragon_Sage]

this worked thank you