Baseband and imei lost

[Kazimainuddin]

Hi, my oneplus 5t suddenly lost the baseband information and imei, results show null baseband and unknown imei. I don't have twrp backup so is there any solution of this problem? Thanknyoubin advance

 

[anatoly1983]

Try to flash modem "fastboot flash modem NON-HLOS.bin" (Non-hlos.bin you can get in the FullRom zip, path: Rom.zip/firmware update) or flash full firmware from here https://forum.xda-developers.com/showthread.php?t=3728665, finaly you can use unbrick tool. If this can not solve your problem, you will need to wtite your IMEI and MEID manualy (find instructions by google).