Nighthawk M1 MR1100-100 does not broadcast the signal and not visible on the WiFi list

after over 3 years I finally managed to resolve this problem on my unit, I come across an article on how to load custom firmware and I tailored it to installing official up-to-date firmware on , find link (at your own risk !!) Gaining root privileges on a Netgear M1 Mobile Router (MR1100) | by Michael Callahan | Medium

1) Download the following and save it all in one folder  >Firmware - download firmware for official Netgear Site Support NETGEAR Support | NETGEAR , type in your model and insure its the correct model, ie I had the European model hence mine is MR1100EU https://www.downloads.netgear.com/files/GDC/MR1100-100EUS/MR1100EUS_V12.06.11.00_00.zip

>Download FDT.exe version 4.6.2.0: https://www.dropbox.com/s/s27ftyfjpvn9819/fdt.exe?dl=0

>Download AC78x Netgear drivers version 4.3.00 http://www.downloads.netgear.com/files/aircard/AC_790S_Telstra/AC78xSDrivers.exe >Download Putty: https://www.putty.org

2) Install the AC78x drivers

3)Remove the battery from your Netgear router (important)

4)Open CMD command as admin, 

5)Type fdt.exe (firmware complete name) ie fdt.exe MR1100-100EUS_23113509_NTG9x50C_12.06.11.00_00_Generic_10.03.secc.spk 6)Enter firmware flash mode on MR1 by simultaneously holding the power button for 10 seconds and connecting the router to your pc using a USB-C cable. Don’t release the power button until you see Downloading software update and the led on MR1 should be blinking blue and red

7)Press enter in CMD and let the MR1 do the rest , hopefully, it should work, there will be multiple reboots but don't disconnect MR1 from PC till the process is complete took nearly 10mins for me, don't worry if you get failed messages in CMD