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Forum Discussion
Zoi
May 12, 2026Initiate
M4250-26G4F-PoE++ - No opening browser nor AV UI - only USB Connection
Hi ! Any Netgear Specialist who could help us? We could just get access once to this switch . It has a qscsystems pass and we wanted to change the pass. It is an M4250-26G4F-PoE++ . This sw...
schumaku
May 14, 2026Guru - Experienced User
Zoi wrote:This switch had 13.0.2.21 Firmware version and AV UI version 1.0.6.6
If correct, this version must be extremely old.
Interesting enough, on a brief check of the
M4250-26G4F-PoE++ download center, I can't find such a version at all, so the more I suspect this is a QSC specific firmware.
Potentially a factor for having lost the management access (Web, and AV UI: Had attempted updating to the current NETGEAR or the last Q-Sys supported firmware release probably?
There were major changes introduced on the earlier days, look here:
https://kb.netgear.com/000065602/M4250-Firmware-Version-13-0-4-13
When looking-up Q-Sys FMI, we find that only defined NETGEAR firmware versions are supported with the (proprietary?) Q-Sys configuration files - all relative old, dated from Summer 2025:
And exactly that latest Q-Sys supported NETGEAR firmware I had referred above introduced a lot of changes - prohibiting a simple "just update to the current version" approach.
Have you heard from Q-Sys Support in the meantime?
- ZoiJun 01, 2026Initiate
Hi ! I finally could connect to the switch by console USB-c . We tried to Factory Reset the switch through console with no success. We have been in touch with Netgear ProAV support and they have checked all the Maintenance Logs and they have done an RMA to change this switch. We are still waiting for the switch to set up all again and test all the AV installation.
- schumakuJun 02, 2026Guru - Experienced User
Zoi wrote:
I finally could connect to the switch by console USB-c .
I'm still lost on what issue you had with the simple USB-C console, especially because you started the post under the subject "...only USB Connection".
Zoi wrote:
We have been in touch with Netgear ProAV support and they have checked all the Maintenance Logs and they have done an RMA to change this switch
You might still require the Q-Sys specific config from Q-Sys support only. This is exclusively available for Q-Sys customers, e.g. after contact via the QSC Support Portal .
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