Mi4s Cant Register On Network

[Nir Ma]

Hi all,
Brand new Mi4s which was bought in Shanghai.
I updated to Mi4S_multi_aqua_V7.2.5.0.LAJCNDA_v7-5.1-MiFlash (with MiFlash) and immediately after to xiaomi.eu_multi_MI4s_V7.5.2.0.LAJCNDE_v7-5.1 (with TWRP).

Somewhere in the process, I lost the ability to connect to the network.
Everything seems to be working fine, the SIM is recognized, but it does not register to the network nor able to manually find networks.

I tried to downgrade back to v.7.2.5 with MiFlash, but it did not help.

If anyone has any thoughts on the matter, please share!
thanks!
Nir

 

[Cecco]

try flash only the modem with fastboot

 

[Nir Ma]

try flash only the modem with fastboot

Thank you!
where do i find the modem file to flash?

 

[Cecco]

choose a rom where you didnt have problems and extract it from the zip
file is called nonhlos.bin

 

[Nir Ma]

thanks again! will try this later today

 

[Tetzi]

Maybe update your rom to 7.5.3.0
https://www.androidfilehost.com/?fid=24591000424945089

 

[DanteC]

Hello

Mine is working all ok, but when a lost the signal (tunnels, underground places, etc) sometimes, doesn't recover it. Again, on open places with proven signal (4G and 3G), 4G is showing on the top of the screen, but it can't connect to any service (including: Whatsapp, browser, etc) because phone looses the "capability" of connection. I don't know if is the rom or modem...

In that case, i must turn on/off flight mode and then signal comes back again.

My history changing roms on my Mi4s:
At the beggining, i'd install v7.2.5 with unlocked bootloader -> Then, install V7.5.3 with TWRP. -> Then, V8 6.7.14 with TWRP (i didn't like this beta rom, so i back to a chinese original ROM because of locked bootloader) -> Then get back to V7.5.3 with TWRP and -> Lastly to V7.5.4 (until now).

About Modems (basebands):
I'd Test all modems on V7.5.4 and all has worked as the same manner.

Actually testing V7.5.4 and dissapointed over my 4G problem that i thing is weird.

I attach pictures of my software and configuration.

Thank you in advance!!