Help Downgrading Hikvision Firmware

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mcvoss
Posts: 21
Joined: Sun Sep 17, 2023 11:42 pm

Help Downgrading Hikvision Firmware

Post by mcvoss »

Hello,

I need to downgrade firmware on a DS-2CD2742FWD-IZS. The older firmware works great in BI, 5.4.5 170124, see substream etc.

I upgraded two of my cameras to 5.5.82 190220 and now BI doesnt recognize substreams.

Hikvision does not allow me to downgrade the firmware using the camera GUI.

Any help or advice is appreciated.

Thanks,
Michael
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TimG
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Joined: Tue Jun 18, 2019 10:45 am
Location: Nottinghamshire, UK.

Re: Help Downgrading Hikvision Firmware

Post by TimG »

Have you checked that the new firmware hasn't turned off the sub-streams ? I would suggest a really close look at the camera menus at the sub-stream settings.
If it's not that, maybe an email to Hikvision Support to ask how to make it work in BI5, or even how to install the older firmware.
Let us know what you find out.
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mcvoss
Posts: 21
Joined: Sun Sep 17, 2023 11:42 pm

Re: Help Downgrading Hikvision Firmware

Post by mcvoss »

TimG wrote: Sun Oct 08, 2023 9:26 pm Have you checked that the new firmware hasn't turned off the sub-streams ? I would suggest a really close look at the camera menus at the sub-stream settings.
If it's not that, maybe an email to Hikvision Support to ask how to make it work in BI5, or even how to install the older firmware.
Let us know what you find out.
Hi Tim,

Yes I looked at the substream menus etc. I have 5 of these cameras, thankfully I only upgraded 2. The menus actually are the same in the new and old firmware so it's easy to see if anything is different. Hikvision started making downgrading Firmware not possible after a certain firmware revision, I forget the revision #. Thanks for the advice, I'll reach out to Hikvision tomorrow, these are real Hikvision cameras so hopefully they'll help. Worse case I don't have substreams on these 2 cameras. Everything else is working fine.

Thanks again,
Michael
MikeBwca
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Joined: Thu Jun 20, 2019 5:39 am

Re: Help Downgrading Hikvision Firmware

Post by MikeBwca »

I suppose it depends on the vendor.

You may want to contact them again and see if they have a 'Recovery' firmware. Just say the camera bricked itself during the firmware upgrade - for some reason.


I bricked a few cameras due to a failed firmware upgrade (probably my fault). The vendor took pity on me and sent me a 'recovery' firmware that reverted my camera back several versions. Then, I updated to the firmware version I wanted - which was the latest.
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TimG
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Location: Nottinghamshire, UK.

Re: Help Downgrading Hikvision Firmware

Post by TimG »

Good idea. Add it to the email to Hikvision. They are kinda bricked as far as BI5 is concerned :mrgreen:
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IAmATeaf
Posts: 457
Joined: Mon Jun 17, 2019 7:48 pm

Help Downgrading Hikvision Firmware

Post by IAmATeaf »

Will Hikvision talk directly to a consumer? I thought their business model was like Dahuas in that they expect purchase and support through their reseller.

Also what a strange thing to do, take away a feature that was there and presumably a selling factor with a firmware update!

Anyway, here’s hoping they reply.
mcvoss
Posts: 21
Joined: Sun Sep 17, 2023 11:42 pm

Re: Help Downgrading Hikvision Firmware

Post by mcvoss »

Well I haven't heard from Hikvision but w/ a little reseach I found out how to do it. I actually bricked one of the cameras on the 1st try. Good news is this method worked and not only unbricked the one camera but let me roll back a firmware.

I used TFTP and followed these instructions.

https://learncctv.com/recover-hikvision ... sing-tftp/

Thanks for all the responses guys!

Michael
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