Firmware that flash on any version? Or how to unbrick? topic

Hi, all.
i have breaked device, i dont know what firmware on it. Only AP Fastboot works. I has been tryed to flash many firmwares what i can find but all of them failed to flash cdt.bin.
Is there any way to figure out which one i have and need or maybe i can install firmware that can be flashed on any other? thanks.