Looking for instructions on how to flash a new pixel from my GOS 7 PRO or my GOS 6a. I don't have a computer & I saw someone write about connecting cable C to C. Is this possible ? My 2 Pixel's I bought new was with GOS installed by a flasher/seller online. I've had no issues with the phones. Want to buy a new pixel 9 then flash it with GOS myself , any help would be grateful. Thanks JJ1992.