Do I need to flash anything other than just the ROM? - ONE Q&A, Help & Troubleshooting

I recently rooted and flashed Sultan's MM ROM. I began to have network issues and this morning I saw No SIM Card error. Rebooting fixes it for a while, before it returns. I also see that the signal indicator drops to no bars a lot (used to have this on Lollipop too). I tried resetting APN settings. That didn't help much.
I flashed using TWRP 3.0.1. Could that be an issue? I see many threads saying that 2.8.6 was stable.
In this thread, the person said they had flashed CM Snapshot to address a similar error. Is that something I have to do? If so where can I find it? I am on TMo USA.
Or is there another fix?

Have you flashed latest modem?
http://blazingphoenix.in/mzo/ONE/Modems/

Related

[Q] To all who has signal disconnection issues

Has anyone tried installing a custom rom and kernel? If so, does the issue still persist? Just trying to see if this is an issue with stock rom or kernel, or just radio.
I have cataclysm and Franco r11 and today out of nowhere I lost phone signal all day, but when I switched off wifi, it's back. not sure if I have messed something up, I'm currently searching for posts with help.

[Q] No Signal - Modem Broken?

Problem Solved - I restored the CM12 backup and now I have signal. Do you folks think I will continue to have problems if I attempt to go back to KK again?
After trying the CM12 Nightlies, I decided i wasn't a fan and decided to try some KitKat AOSP Roms before going back to CM11. My first mistake was installing the AOKP Rom which wasn't officially supported for the Sprint version. During set up I realized that there was no cell data and tried to unroot. My second mistake was when I got cell signal back; I decided to test if the initial loss of signal was just a fluke. Re rooted and reflased the same AOKP rom. Once again i lost cell signal. However, when I unrooted to stock this time there was no cell signal on the stock rom. I have no idea how to fix it. I've tried to flash the .pit i saw in another post and tried to use the "Phone EFS Clear" in Odin to no avail. At this point I'm rooted with a the Stock ROM and no cell signal. I realize I got myself into this mess by being dumb but I could really use the help in fixing the issue.
Info - Rooted with TWRP Recovery running Out of Box Stock Rom.
APN fix!
This will fix signal issues!
Thanks, if I go back to a KK ROM and have the same issue I'll have to try it out.

(Resolved) opo hard-bricked, recovered and now has problem getting cellular signal

Hi guys,
Tried to flash OxygenOS 1.03 through twrp 2.8.7 after getting some annoying problems with OPO on the latest CM11s.
Done many flashes before so didn't really expect much problems. Then OPO couldn't boot up at all with black screen. I followed the instruction here to unbricked with factory tool to clash an old edition of ColorOS and I thought that was the end of it. Flash OxygenOS again, bricked again.
Then I recovered and flashed COS 12.1. Didn't really want to make the jump but I had too. I immediately noticed I am unable to connect to 4G. Thinking that the OS 1.03 from OP didn't contain any modem update and thus the hard brick, I flashed 1.03 again and worked. Again no 4G or any cellular connection. I went out side and finally got a very weak 4G connection (I usually have full bar around my home). Really desperate, I flashed back to official CM12s, and flashed the correct radio for it. Same thing.
It has been a week now. I could get some connection if force it to 3G but still very spotty. It is hard to use. I tried different modems, even one from ColorOS because I am in China and I got the phone in US.
Any tips on solving this?
I fixed it by reflash raido of xnph52q found here. The zip contains more than the radio firmware.
http://forum.xda-developers.com/oneplus-one/development/rom-stock-rooted-xnph52q-t3025399
I flashed it before but it didn't work. The only difference is I used TWRP 2.8.6. I remember reading somewhere online that 2.8.7 has issue with OPO.
I will changed it to resolved and save it as reference for others

My One won't reconnect to network after it looses signal

Hi there,
Everything was working just fine, but since I switched to a new carrier I can't get the network back as soon as my OP looses it (subway for example). I have 4G as my favorite internet mode and my APNs are good.
Only a full reboot fixes it, not even a soft one. What can I do?
I use the lastest CM 12.1 S rom (YOG4PAS3JL)
Maybe I should try to flash Oxygen's modem? http://forum.xda-developers.com/one...dio-updated-modem-radio-files-oxygen-t3072516
It seems many users are affected by the problem but I didn't find a real solution, hence my post.
Thank you!
After a long investigation, it seems that the OPO is having trouble switching for and from 4G. I solved it using 3G as my preferred network, but I'd have loved using 4G
reinstall the system... u can google fastboot images for opo... flash them through CMD
I've tried 3 ROMS and at least 4 modems so I think I've tried eveything that's available atm
I have had the same problem for some time now. But no reliable solutions found. Have tried various versions of ROM and Radio. Currently using 44S and CM 12.1 S (YOG4PAS3JL).
Lamner said:
Hi there,
Everything was working just fine, but since I switched to a new carrier I can't get the network back as soon as my OP looses it (subway for example). I have 4G as my favorite internet mode and my APNs are good.
Only a full reboot fixes it, not even a soft one. What can I do?
I use the lastest CM 12.1 S rom (YOG4PAS3JL)
Maybe I should try to flash Oxygen's modem? http://forum.xda-developers.com/one...dio-updated-modem-radio-files-oxygen-t3072516
It seems many users are affected by the problem but I didn't find a real solution, hence my post.
Thank you!
Click to expand...
Click to collapse
kingalpha said:
I have had the same problem for some time now. But no reliable solutions found. Have tried various versions of ROM and Radio. Currently using 44S and CM 12.1 S (YOG4PAS3JL).
Click to expand...
Click to collapse
For how long have you been using that? Did that fix the problem?
This is very annoying!!!!
xupi said:
For how long have you been using that? Did that fix the problem?
This is very annoying!!!!
Click to expand...
Click to collapse
Didn't fix the problem. Finally reverted back to Oxygen OS. Complete reinstall, including bootloader, storage, everything. Got it done at OPO service centre. Much better reception now.

updated: [solved] CM13 No signal (cell or data) after flash, backup wont restore.

I had a nightly of CM13 working, but the SD card wasn't working correctly, so flashed the 20160820 snapshot, and everything was good except there was no connection to the sprint network. Wifi was OK. I tried flashing the latest nightly (20160930), and same issue. All downloaded from the CyanogenMod website.
So gave up and tried restoring the backup but it has failed, sdcard issue.
Tried the snapshot of 12.1 but it just bootlooped.
Edit:
So I tried flashing the 12.1 snapshot (20161001), still the same.
Edit:
I flashed this stock rooted - http://forum.xda-developers.com/spr...ment/rom-g900ppca-6-0-1-stock-rooted-t3387717 and got cell signal, but data only for a few minutes.
Any way i can get cell and data?
what version of TWRP are you using and what baseband are you on?
youdoofus said:
what version of TWRP are you using and what baseband are you on?
Click to expand...
Click to collapse
Thanks for the reply. I ended up reflashing the stock Deodexed rooted ROM and the cell signal came back, so at least I was able to make calls.
I was about to try an old Lollipop ROM, but saw the latest comments on this Resurrection Remix thread all seemed happy, with no issues, so late last night flashed it. So far this morning I haven't seen any problems, I have cell signal, LTE and the SD card seems to be working as intended. Wifi is good too. Just need to checkout Bluetooth and even that's not essential. Will play with it today and see. So I think I'm good for now. Again, thanks for your reply.
syco123 said:
Thanks for the reply. I ended up reflashing the stock Deodexed rooted ROM and the cell signal came back, so at least I was able to make calls.
I was about to try an old Lollipop ROM, but saw the latest comments on this Resurrection Remix thread all seemed happy, with no issues, so late last night flashed it. So far this morning I haven't seen any problems, I have cell signal, LTE and the SD card seems to be working as intended. Wifi is good too. Just need to checkout Bluetooth and even that's not essential. Will play with it today and see. So I think I'm good for now. Again, thanks for your reply.
Click to expand...
Click to collapse
Glad to hear! Don't hesitate to inquire if you have more questions

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