Baseband and IMEI not showing up and no mobile service

I have decided to try a rom cause being on stock was getting boring and I couldn't even use Samsung pay so I installed Twrp and then proceeded to restore one of my backups, that's where it stopped working. I had G920TUVU3DOI1 on my phone and I can't manage finding the files to flash. Whenever I try to flash a firmware (5.1.1. It fails, can anyone provide me a link to that version as that is my problem. Currently the phone is working but the IMEI and Baseband numbers are unknown.

quick contact showing two duplicate mobile numbers

Many of my contacts contain just one phone number, their mobile. Then WhatsApp identifies them and adds its own contact. These two contacts are merged and when viewing the contact I see only one number, as expected. However, apparently internally the G3 lists the contact as having 2 duplicate numbers. This confuses apps that try to automatically choose a default number to call (specifically, Conigri contacts widget). I can also see this in the quick contact popup. The contact shows with two entries of the same number. I can't work around this by choosing one of these as the default, because the contact details show just a single number. I tried to remove the number, which initially works as the WhatsApp number becomes the default, but then WhatsApp syncs, sees the contact no longer has a number and deletes its contact entry leaving me with a contact with no number.

Note that I previously had a Galaxy S5 and had no such problem there (so it is not a basic Android problem I guess).

I tried googling for the issue, but couldn't find it. How can I solve this?

Asus Zenfone 2 (ZE551ML) Not showing ANY notifications whatsoever?

Ive went through settings ect but still nothing shows up

Nexus Player not showing in Device manager after Flashing Marshmallow!!

I Flashed the latest version of android 6.0 from the google's factory images website, and now want to root my NP.
However, I'm don't see the device in the device manager anymore (I've enabled usb debugging).
"adb devices" returns nothing neither on my mac or windows laptop.

Please help!!!!

Texts and email not showing up on 360

I have a gen 1 Moto 360 and a Galaxy S6 edge. I just got the 360 yesterday so I'm a newb. I'm not getting texts or email on my Moto. I use Chomp and Gmail. I have received at least 1 text but I'm not receiving them at all now. My phone calls show up fine. What am I missing?