tarsier22 0 Posted February 15, 2018 l have dahua dvr DVR0404LF-AS This DVR is running versions… Webrec Control 2.1.7.72 NETSDK 3.3.8.6493 PLAYSDK 3.32.0.6498 s/a PA#GP02900499 BIOS 2.608.0000.3 BUILT 2012-11-2 l try to upgrade it via Config Tool l put general_dvrxx04lf-as_31xxh_eng_n_v2.608.0000.7.r.20170312 it updated succecfuly it tell thatit reboot......and after that the dvr is bricked what l can do? it doesnt start.no signal cant see it at 192.168.1.108 thanks for the help tarsier Share this post Link to post Share on other sites
tarsier22 0 Posted August 1, 2018 anyone can help me flash it?with old version? through telnet? Share this post Link to post Share on other sites
nikey22 0 Posted November 19, 2018 have you been able to solve this? It looks like the correct firmware might have been: General_DVR0404LF-AS_3104H_Eng_N_V2.608.0000.7.R.20170312 But if you can't see your device on the network, you probably can't telnet into it. If you open it up and look carefully at the board, you will see printed on the circuit board RS232 It will have 3 or 4 pins. Get an RS232-TTL module, find it on ebay. I think you can transfer new firmware through using a null modem cable. I'm not 100% sure about this. I don't know the steps, but I'm sure there are guys here that can do a firmware upload this way. have a look at this guy's video Share this post Link to post Share on other sites
