@jpmeuret @aibd Hello . Thank you very much for your answers. I would like to add a little information so that it is clear that I understand what I am asking a question about))
So my flash drive is formatted in FAT, I have an original cable that connects to another phone and everything works fine, I also have an OTG adapter that also works well when I connect it to another phone and the phone immediately reports that a USB drive is connected. I tried different settings now i use no data transfer option connect with pc without problems. i have one suspicion but i would like to know your opinion. i installed the firmware everything works the phone is ringing but when i checked the bootloader i saw that it doesn’t match what is indicated here https://doc.e.foundation/devices/s3ve3gds/install. Could this be the cause of my problems?