Skr mini e3 v2 wont flash

[SebKen]

I tried everything compiling my own firmware trying to install octoklipper marlin update 4 diffrent sd cards all new from diffrent brands from 255mb to 32 gb nothing works the printer wont flash the new firmware i get no blinking light on the board only green light i press on the tft 35 inti sd card i either get volume.init fail or sd init fail and never it renames itself to firmware.cur and no im not stupid it isnt firmware.bin.bin or anything like that

[SebKen]

also before i forget no its not one with the rare chip its a common stm chip