Can Dahua NVR firmware be uploaded thru RS232

Jun 19, 2019
2
0
PA
Hello new to this forum, looking on how to hard reset NVR to load new firmware either thru RS232 port using putty to putty or other means.
I made the mistake of trying to remote into an NVR and upload new firmware.
I now have the system on desk.
The system keeps rebooting every 2 minutes and I get a Dahua splash screen only.
I tried accessing the unit thru the RS 232 using putty to putty and my settings are 115200, 1, 8, none.
I can see the system booting up with the following information(attachment). During the boot up I see it says "Hit any key to stop auto boot" and count down from 3 but no key accesses it.
firmware: DH_NVR5XXX-4KS2_MultiLang_V3.216.0000006.0.R.20190223.bin
 
I have the same issue with the boot logo frozen and need some help and the tools to flash the bios with rs232 and how to use it please help