NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.

Forum Discussion

Drewsml95's avatar
Drewsml95
Guide
Jan 01, 2021

Nighthawk C7800 firmware update stuck

My nighthawk C7800 router is stuck in constant firmware upgrading..... I had my router for a month and it’s worked flawlessly. One night my internet got super slow. Dropped to 3-10 mbps speeds. Whe...
Curtissmartins's avatar
Curtissmartins
Aspirant
Dec 02, 2021
I'm having the same issue. Thing worked only okay for 2 months then one day slowed down, then stopped entirely. Now I get a black screen, two green lines, and a message stating, "Firmware is upgrading, please don't power off and wait [sic] upgrading to be completed..." How it's written I was afraid it was a Trojan horse or virus. But apparently the only thing Netgear does worse than communicate with Xfinity is grammar.
FURRYe38's avatar
FURRYe38
Guru - Experienced User
Dec 03, 2021

C series modems are not upgradable by users. Only ISPs can push FW down to the modem. 

You should contact your ISP and have them check the modem for problems seen on there side. 

Try a factory reset on the modem as well and setup from scratch. 

 

Please post a copy and paste of the modems connection status page.

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. 
Be sure your using good quality RG6 coax cable up to the modem. 
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

Curtissmartins wrote:
I'm having the same issue. Thing worked only okay for 2 months then one day slowed down, then stopped entirely. Now I get a black screen, two green lines, and a message stating, "Firmware is upgrading, please don't power off and wait [sic] upgrading to be completed..." How it's written I was afraid it was a Trojan horse or virus. But apparently the only thing Netgear does worse than communicate with Xfinity is grammar.