okay1

Hi every one I need flash file for this type of dvr thank you in advance

also I found (sf probe 0;sf read 0x82000000 0x100000 0x300000;bootm 0x82000000) but after show starting kernel ... stop and everything freezing

Hi dear I need help I access to my DVR via com port (TTL modul) unfortunately unfortunately I changed bootcmd parameter without backup now I don't know what was that I need to know how to repair bootcmd or change firmware completely via serial port chip hi3520 flash 25q128 16MB help me to restore or repair please