No phone or networks service after update on x522

[dainbramage]

Updated my new x522 to 5.8.021s now I have no phone or data. It sees the sim and my phone number on the sim but it won't go on the network. Everything else is fine so have 2 questions.

1. Can and how can I flash a new modem to the 5.8.021s firmware?
2. What modem should I use I am in California on T-mobile?

Baseband MPSS TA 2.1 c700008-8976 GEN PACK-1.85233.30.76286.2
EUI version 5.8.021S

Thanks in advance.

Rick

 

[piku 123]

Bought this phone last week off ebay thought I would update the firmware so I found the 5.8.021s file and did the update ZIP. It updated fine and everything worked except the phone. It shows the sim card as t-mobile with my phone number and cellular data calls and messages as t-mobile but when I try search for network I get "error searching for network". I tried different sims that I know are good and nothing works. I would return it to the original firmware but I wasn't smart enough to back it up. I would flash a new modem if I knew how maybe that is the problem. I have an x829 as my daily driver this was going to be a birthday gift.

Baseband MPSS TA 2.1 c700008-8976 GEN PACK-1.85233.30.76286.2
EUI version 5.8.021S

Thanks in advance.

Rick

Seems like you flash a wrong ROM that is meant for different country.
Download EUI stock official ROM which is meant for your country then flash it with chinese twrp once you flash it

 

[dainbramage]

Fixed it. Installed the small EUI by aurel. He had a note about my predicament on the first page. Great ROM for me and a big thank you to him. So here is what I did. Probably would have worked on the 21s too.

1. Download the adb, fastboot drivers
2. Install it on your PC.
3. Restart the phone in fastboot mode (power + vol down)
4. Type this commands in the terminal:
Quote:
fastboot erase modemst1
fastboot erase modemst2
fastboot reboot
5. Done.
Thanks again

 

[hookedalready]

I got this problem fixed after using fastboot erase persist, and fastboot flash persist /directory/persist.img.
I Got stocked after trying used fastboot erase (each of my partitions) and well not remember what more i did. Just tried installing a lot of stock custom rooms (that not worked) and also remember that the twrp keeping said not able to mount persist partition.