MR6500 issues and questions

[Remko76]

Hi all,

I am new to this forum, since I recently bought an MR6500 and...of course now the issues start. First of all, I am new to hotspot flashing and all, but am fairly experienced with all the Android flashing, Custom ROM's, Running Ubuntu for my local Home Automation and everything, so not a complete Noob when it comes to these topics, but...feel a bit overwhelmed starting down this route for now, so please bear with me...hope for some support here.

So..the issue...I have the ATT MR6500 with firmware version NTGX65_12.01.16.01 and am operating it on the T-Mobile network in Germany. It may not offer full 5G speed, but I am not really concerned about that. It does use 5G, so that is ok.

My main issue is the Wifi side of things. I intend to run it without battery to enable the Wifi 6e network. This all seems to work according to the hotspot, but the 6GHz Wifi is not showing up on any of my devices (which really are 6GHZ Wifi capable, tested on other routers). So I am assuming something is wrong in the firmware or with the device. Since returning it is not really an option, I would like to go down the route of trying different firmwares and get the maximum out of the device.

Now to my questions....I have read that having the 12... firmware is a problem. But..is there anything I can do to get around it?
Flashing different firmware for it and actually downloading a build for this device...I have not been able to find a guide or downloadable firmware. Is there anyone which can point me in the right direction? I understand people do this for a living and I have no problems also paying for a service here...

Thanks in advance for any help or guidance to the right posts to get into this.

[Remko76]

I actually managed to get around all the issue with a lot more reading and trying. I got the latest MR6450 firmware installed on the device and now all is working perfectly!! I have my 6GHz network and...I don't know if it is because it is European now, the 6GHz also works on battery operation only. The ATT firmware requires you to take the battery out.

[Gmrss]

Hello. Is 74 degrees Celsius normal temperature for this device (MR6550-100APS without battery)?
I see this temperature when download any big file. This temp seems (and feels) rather high.
Firmware is NTGX65_12.01.54.00
Revision: NTGX65_12.01.54.00 r11282 ntgrbc-fwbuild7.netgear.com
Web App Version: MR6550-AsiaPacific_05.00.107.00

If I check for updates and update firmware, will I lose a possibility to OPENLOCK/NVIMEIUNLOCK and change imei?
Now it does not check for updates itself because I set AT!WUCHECKINT=0

[Klaus4]

74 is to hot. There must be a hardware issue. I used it without battery but with external battery in a pocket and it didnt had 50 degrees celsius.

If I plug it in a wallmount socket with only powersupply its not gonna be hot.

try to reduce the balance and take a look at the temperatures. They must be lower. Or plugin a battery and charger and use the lowest speed option. This may help reducing the temperature. But it will not slow down the speeds to hard.