Flashing AC66U_B1 384.7

[Legeril]

Been trying to get this flashed for 2 months.

Router Firmware: 3.0.0.4.384_21140

I used the AC68U downloads per the instructions.
First I was trying 384.6 ,but then figured I may need 384.7
The below happens with both version of the firmware

Webui upload -Upload gets to 100% then immediately flash unsuccessful and revert.

Rescue Mode - miniweb ui crashes once upload reaches 50% or so. Waitied an hour or so thinking maybe it was doing something, but nothing happens. It stays in the slow blink reccovery mode.

I have googled and googled and read post after post trying to figure this out. I'm out of steam.

Any suggestions?

 

[hervon]

https://www.snbforums.com/threads/the-tm-ac1900-is-not-supported.48056/

Maybe ?

 

[Legeril]

https://www.snbforums.com/threads/the-tm-ac1900-is-not-supported.48056/

Maybe ?

There's no T Mobile branding on it that I can see and the top left does RT-AC66U_B1 on the webui. Also does not say TM AC1900 anywhere on the hardware

If there's something I am missing let me know.. and if this is for some reason the case - Sorry!

 

[Grisu]

This forum is paranoid in relation to TM-version.
I know there never exists something like that in 66U-housing.

First I would try new stock 31799, do a factory reset, initialize reset and a 10sec. power cycle.
Try again with Merlin.

 

[Legeril]

This forum is paranoid in relation to TM-version.
I know there never exists something like that in 66U-housing.

First I would try new stock 31799, do a factory reset, initialize reset and a 10sec. power cycle.
Try again with Merlin.

Following your steps worked. Before the rescue mode upload would crash. Now it didn't

We're good. Thank you