Help restore dvr hikvision 7208hthi-k2

nico2786

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HI!
I've big problem with hikvision 7208hthi-k2.
I flash new firmware but ad reboot the dvr work partial, don't is possible login ecc...
I see that the DVR set ip to 192.0.0.64, I try to tftp procedure but the dvr don't ask the firmware at boot.
So i think i need to access to console but I see that i don't have rs232 but only 485.
It's possible connect to console recovery with 485?

Help please
Thanks

Nico
 
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alastairstevenson

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where is the connector for rs232?
I'd say that the 4-pin white connector to the right of the on/off switch cable, next to the sounder, is the serial console connector on the middle image.

And, by the way, it won't be RS-232, it will be serial TTL, for which you'd need -
A serial TTL to USB adaptor, usually a PL2303HX-based device
Also a wired connector, 4-pin 1.5mm JST ZH type.
Both readily available on eBay.
 

nico2786

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There are another solution to force the dvr to ask TFTP server a file?
because the dvr start with ip 192.0.0.64, a video have a gui but if i insert user don't accept, only the password...
 

nico2786

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Hi!
After press control-u
output is this:

U-Boot 2010.06-svn17727 (Sep 19 2017 - 16:59:23)[V1.4.5]

Hit ctrl+u to stop autoboot: 0
HKVS $ help
HKVS $
HKVS $
HKVS $ dir
HKVS $ list
HKVS $ commmand
HKVS $ hkvs
HKVS $
HKVS $
HKVS $


i don't have command list...
 

alastairstevenson

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Yes, the 'hidden' way to send bootloader commands.
The command should really be :
Code:
setenv ';update'
Did the update command work to fix up the problem?
 

alastairstevenson

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Yes, a little bit of 'security by obscurity' by Hikvision.
When it's out there, it's out there. so not very effective.
A worked example to get a root shell prompt (DS-7316HQHI-K4) :
Code:
HKVS $ setenv ';setenv bootargs mem=296M console=ttyS0,115200n8 single'
HKVS $ setenv ';saveenv'
Saving Environment to SPI Flash...
Erasing SPI flash, offset 0x00060000 size 4K ...done
Writing to SPI flash, offset 0x00060000 size 4K ...done
HKVS $
HKVS $ setenv ';reset'
resetting ...



U-Boot 2010.06-svn (Jun 08 2017 - 16:50:57)[V1.4.5]

Hit ctrl+u to stop autoboot:  0
### CRAMFS load complete: 3856688 bytes loaded to 0x42000000
## Booting kernel from Legacy Image at 42000000 ...
Verifying RSA ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

[root@Hik-eth /] #
[root@Hik-eth /] #
 
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