DAHUA HCVR4104HS-v3 restarting after firmware upgrade

Hi!

I have bought this dvr (HCVR4104HS-v3 )from China and started playing with it. Ofcourse the reason was to change the chinese language to English

I have done and update with this file DH_HCVR5x04-S2_SpnEng_NP_V3.200.0001.20.R.20150520.bin

Everything was allright except the fact that each buton or description from the menu had also some odd english strings (like something from programming)

After that i have tried another firmware:

DH_HCVR5x04-S2_Eng_P_V3.200.0004.6.R.20151123.bin

After this firmware the dvr keeps trying to boot. Only the logo appears and after a while it reboots.

Is there anyway at least to rewrite the firmware with previous version?

Is it lost forever?

Thank you for your help!

Hi!

I have bought this dvr (HCVR4104HS-v3 )from China and started playing with it. Ofcourse the reason was to change the chinese language to English

 

I have done and update with this file DH_HCVR5x04-S2_SpnEng_NP_V3.200.0001.20.R.20150520.bin

Everything was allright except the fact that each buton or description from the menu had also some odd english strings (like something from programming)

 

After that i have tried another firmware:

DH_HCVR5x04-S2_Eng_P_V3.200.0004.6.R.20151123.bin

 

After this firmware the dvr keeps trying to boot. Only the logo appears and after a while it reboots.

 

 

Is there anyway at least to rewrite the firmware with previous version?

Is it lost forever?

 

Thank you for your help!

this have rs232 port?