upfrade failed NVR2108HS-8P-4KS2

E

endugas

n3wb

Oct 2, 2025

9

2

france

• Nov 7, 2025

• #1

Hello everyone,
While modifying the firmware of this NVR, I ended up installing an older version to diagnose a camera visibility problem. It turns out the camera is faulty, but since this firmware version (V4.000.0000002.0 from December 5, 2019), upgrading has become impossible. I've tried via the web interface, using the USB drive on the NVR, and via configtool. Nothing works; the update fails every time. Do you have any ideas on how to solve this problem?

 

TonyR

IPCT Contributor

IPCT+ Member

Jul 15, 2014

21,387

50,761

Alabama

• Saturday at 8:39 AM

• #2

Where did you purchase the NVR?

When you say "the update fails every time", what message is displayed?

 

E

endugas

n3wb

Oct 2, 2025

9

2

france

• Saturday at 1:04 PM

• #3

i ordered with Aliexpress in China. i have upgrade several times and last one downgrade...
result: block near50% and the NVR reboot alone.

 

bigredfish

IPCT+ Member

Sep 5, 2016

32,137

78,661

The Swamp

• Saturday at 1:27 PM

• #4

Maybe you dont have the right FW?

Try the one on the Dahua Intl site

Under DOWNLOAD/Firmware

https://www.dahuasecurity.com/products/All-Products/Discontinued-Products/Network-Recorders/NVR2108HS-8P-4KS2

 

E

endugas

n3wb

Oct 2, 2025

9

2

france

• Sunday at 5:03 PM

• #5

bigredfish said:

Vous n'avez peut-être pas le bon firmware ?

Essayez celui du site de Dahua Intl

Sous TÉLÉCHARGEMENT/Micrologiciel

https://www.dahuasecurity.com/products/All-Products/Discontinued-Products/Network-Recorders/NVR2108HS-8P-4KS2

Click to expand...

Thank you. I will retry it but not at home and i think this is a firmware i tried last week. Think that the upgrede has become impossible but dont know why and how make it work again.

 

bigredfish

IPCT+ Member

Sep 5, 2016

32,137

78,661

The Swamp

• Sunday at 5:27 PM

• #6

Login to the NVR web GUI with a web browser. Try it that way

 

E

endugas

n3wb

Oct 2, 2025

9

2

france

• Monday at 6:56 AM

• #7

bigredfish said:

Connectez-vous à l'interface graphique web du NVR à l'aide d'un navigateur web. Essayez cette méthode.

Click to expand...

I tried with web also. Same issue.

 

• 

Reactions: bigredfish

bigredfish

IPCT+ Member

Sep 5, 2016

32,137

78,661

The Swamp

• Monday at 7:57 AM

• #8

I guess next step is using the web GUI factory default the NVR

 

E

endugas

n3wb

Oct 2, 2025

9

2

france

• Monday at 12:50 PM

• #9

bigredfish said:

Connectez-vous à l'interface graphique web du NVR à l'aide d'un navigateur web. Essayez cette méthode.

Click to expand...

 

E

endugas

n3wb

Oct 2, 2025

9

2

france

• Monday at 12:52 PM

• #10

bigredfish said:

Connectez-vous à l'interface graphique web du NVR à l'aide d'un navigateur web. Essayez cette méthode.

Click to expand...

bigredfish said:

Je suppose que la prochaine étape consiste à utiliser la configuration par défaut de l'interface web du NVR.

Click to expand...

Default parameters, done, same issue

 

bigredfish

IPCT+ Member

Sep 5, 2016

32,137

78,661

The Swamp

• Monday at 1:12 PM

• #11

 

E

endugas

n3wb

Oct 2, 2025

9

2

france

• Monday at 1:41 PM

• #12

Help, lol

 

bigredfish

IPCT+ Member

Sep 5, 2016

32,137

78,661

The Swamp

• Monday at 2:09 PM

• #13

It’s possible you can’t go back from 4 to 3

 

E

endugas

n3wb

Oct 2, 2025

9

2

france

• Tuesday at 2:02 PM

• #14

i will try it quickly but i think i did also. so many attempts