Keep Getting IMEI Unknown, Baseband Unknown After Flashing 4.3 Custom ROMS - Nexus 4 Q&A, Help & Troubleshooting

I flashed a 4.3 custom ROM and I get baseband unknown, IMEI unknown, and no reception. I used to flash 4.3 ROMs without trouble but after I installed one specific ROM, my phone can't accept another 4.3 ROM.
I tried flashing back stock 4.2.2 ROM and it fixes everything. But when I'm installing 4.3 ROM, I get the same problem.
Please help me. Thanks.

nokkenas said:
I flashed a 4.3 custom ROM and I get baseband unknown, IMEI unknown, and no reception. I used to flash 4.3 ROMs without trouble but after I installed one specific ROM, my phone can't accept another 4.3 ROM.
I tried flashing back stock 4.2.2 ROM and it fixes everything. But when I'm installing 4.3 ROM, I get the same problem.
Please help me. Thanks.
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Which was that one specific ROM? Didn't you took the Nandroid before flashing that one specific ROM?
I doubt that one specific ROM might be PA RC2,right??
Try flashing any rom,gapps, bootloader(optional-z20i latest),radio(.84 latest) . :good:

Rohit02 said:
Which was that one specific ROM? Didn't you took the Nandroid before flashing that one specific ROM?
I doubt that one specific ROM might be PA RC2,right??
Try flashing any rom,gapps, bootloader(optional-z20i latest),radio(.84 latest) . :good:
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Click to collapse
It's not PA, it was Cataclysm. I haven't tried bootloader, will do and report back. Thanks for the suggestion! I did a Nandroid though but I want to try another ROM.

Rohit02 said:
Which was that one specific ROM? Didn't you took the Nandroid before flashing that one specific ROM?
I doubt that one specific ROM might be PA RC2,right??
Try flashing any rom,gapps, bootloader(optional-z20i latest),radio(.84 latest) . :good:
Click to expand...
Click to collapse
It doesn't work. I tried another ROM and it doesn't work too... I'll try flashing my old ROM.

i've got the same problem, the only rom that doesn't has this problem on my nexus4 is the cyanogenmod (and all the roms that are based on it).

flash cwm to older one
i had the same prob n finally i solved it by downgeade my cwm to older version which is 6.0.3.X one..reflash the rom n prob solved...at least it works for me...u may giv a shot

Related

[Q] manually install 4.3.3 via odin

hey guys my i9500 is rooted on 4.2.2 ,i am currently running arrow rom.i just downloaded 4.3.3 official rom for my phone ,i just wanted to know whter it has to be installed in the same way as before via odin ,viz. selecting it on pda or i need to do anything else tooo.and do i need to make an efs backup also before i flash this rom.
i am a newb so plzz try to be noobfriendly
p.s i couldnt find any other post which could help me so if there is any,can you guys please post the link also
If you are still on 4.2.2, then I would recommend to not upgrade to a 4.3 stock rom. Doing so will flash the new bootloader which will setup Knox on your phone. When you have the new bootloader and you flash a custom rom, Knox wil be set to 0x1. You can read more about Knox in the Knox thread.
If you planning on flashing custom roms in the future, then stay away from official firmwares.
Lennyz1988 said:
If you are still on 4.2.2, then I would recommend to not upgrade to a 4.3 stock rom. Doing so will flash the new bootloader which will setup Knox on your phone. When you have the new bootloader and you flash a custom rom, Knox wil be set to 0x1. You can read more about Knox in the Knox thread.
If you planning on flashing custom roms in the future, then stay away from official firmwares.
Click to expand...
Click to collapse
So is should stay on 4.2.2? What about flashing roms based on 4.3.3?
any significant changes in 4.3.3 that ill be missing?
btw thanks for replying bro.
when did 4.3.3 come out
i would like to know just where is this 4.3.3 coming from ..i know 4.3 is out but have not seen any official 4.3.3 on samsung servers...or google GE edition either ..
Is this a custom rom...
Nexsss1 said:
So is should stay on 4.2.2? What about flashing roms based on 4.3.3?
any significant changes in 4.3.3 that ill be missing?
btw thanks for replying bro.
Click to expand...
Click to collapse
You can flash any custom rom based on 4.3 that you want. Because custom roms don't flash the bootloader. There seem te be some problems with sound and wifi (but i'm not sure) when you flash a custom 4.3 rom on an old bootloader. But you can always revert to a custom 4.2.2 rom. So you can just try it
Just don't flash originial firmwares. Custom roms are safe.
Lennyz1988 said:
You can flash any custom rom based on 4.3 that you want. Because custom roms don't flash the bootloader. There seem te be some problems with sound and wifi (but i'm not sure) when you flash a custom 4.3 rom on an old bootloader. But you can always revert to a custom 4.2.2 rom. So you can just try it
Just don't flash originial firmwares. Custom roms are safe.
Click to expand...
Click to collapse
Thanks for the info bro..i just wanted to know whether I would be missinganything significant If idont updateto 4.3.3 or any 4.3.3 roms, cause of the problems you mentioned
sorry to highjack the thread as its a noob question but wanted to make sure.
I am on MH8 knox 0x0.
If i flash the 4.3 MJ5 stock firmware via know will it trigger knox? i have no intention of rooting just to upgrade to official 4.3?

[Q] Old Bootloader & Newest Stock TW ROMs

Hey Guys,
being on old bootloader i want to flash one of the prerooted stock roms provided here.
In the OP it says for installing the JB 4.3 roms on old bootloaders: "Other than wifi, the rom is fully working, (...) To get wifi fully working, dev needs 4.3 kernel sources, so please wait!".
So will i break WiFi because i can't use (as also said in the thread) the WiFi Fix on old bootloader?
I would like to flash the newest prerooted Stock Rom (XXUEMKE from 27.11.2013) via CWM.
i use a 4.3 costom rom with no wi fi problems if u had problems with your connection just flash a 4,3 modem and that should solve it.
G72-8X said:
i use a 4.3 costom rom with no wi fi problems if u had problems with your connection just flash a 4,3 modem and that should solve it.
Click to expand...
Click to collapse
The provided roms in the linked thread don't contain a modem. I'm currently on MJ5 with latest (newest) possible LTE modem for old bootloader. So I don't understand why it says in the thread that there can occur Wi-Fi problems..
h0rt3xus said:
The provided roms in the linked thread don't contain a modem. I'm currently on MJ5 with latest (newest) possible LTE modem for old bootloader. So I don't understand why it says in the thread that there can occur Wi-Fi problems..
Click to expand...
Click to collapse
that is because when 4.3 came at the begining they didnt have the kernal sources for 4.3 and that made lots of problems but now there are a lot of kernals for 4.3 like ktoones, Faux and talexop's kernal

[Q] Help me to restore rom stock 4.3

My phone is current rom stock 4.4.2 ( new rom stock for i9500) and my phone is rooted. Now I want to restore rom stock original 4.3 . Can anyboby help me how to restore to 4.3. I read some thread they said they lost IMEI went they restore 4.3. So i afraid if i restore follow the step:
Bring my phone to Downloading mode --> up rom 4.3 by ODIN, i also lost IMEI.can i restore by this way? Thanks.
You cant downgrade ur phone to android 4.3, sorry :silly:
Joku1981 said:
You cant downgrade ur phone to android 4.3, sorry :silly:
Click to expand...
Click to collapse
So can i downgrade by rom cook 4.3 as omega rom cook ?If i can, how i do it? Thanks
leduy1088 said:
So can i downgrade by rom cook 4.3 as omega rom cook ?If i can, how i do it? Thanks
Click to expand...
Click to collapse
You can flash any custom rom you want ie: Kitkat/Jelly bean/AOSP . but you cannot downgrade your phone using odin mate , You need to download a custom rom and then flash Philz recovery or TWRP , Do a nandroid backup and do a fullwipe and flash the rom.

downgrade

guys i have android 4.4.2,i wanted to install new rom which is 4.2.2,should i flash new modems or somethink,or just flash new rom with full wipe?
burimi007 said:
guys i have android 4.4.2,i wanted to install new rom which is 4.2.2,should i flash new modems or somethink,or just flash new rom with full wipe?
Click to expand...
Click to collapse
Hi,
I guess you mean that you have stock 4.4.2 and want to install a custom rom 4.2.2 , i would try first rom as it is , if you have signal problem i would try a different modem then.
Downgrade from stock 4.4.2 to stock 4.2.2 is not possible at the moment
MAX 404 said:
Hi,
I guess you mean that you have stock 4.4.2 and want to install a custom rom 4.2.2 , i would try first rom as it is , if you have signal problem i would try a different modem then.
Downgrade from stock 4.4.2 to stock 4.2.2 is not possible at the moment
Click to expand...
Click to collapse
i have custom rom TW based ( Goldeneye rom ),and i want to install new custom rom 4.2.2.So can i directly flash new rom without flashing modems?
burimi007 said:
i have custom rom TW based ( Goldeneye rom ),and i want to install new custom rom 4.2.2.So can i directly flash new rom without flashing modems?
Click to expand...
Click to collapse
Hi ,
Yes you can, usually you keep the modem you have already....change only if you want ( or if not working right)

Upgrading lp to mm, now I can't install custom roms

Don't Know what I am doing wrong. This is my forth phone I've rooted and installed custom roms. I just upgraded from lollypop to Marshmellow, I was running moar rom on lollypop, no problems.
After I upgraded I lost root access so I re-rooted. But now I can not seem to have success on installing a new rom, I've tried two different roms. I follow the instructions and it begins to load and just sits there, even after a good 20 minutes or so. I'm figuring I'm missing something here, please help. My stasts: ,Sprint carreir, model sm-G900P, build MMB29M.G900PVPU3CPCA
macmovr said:
Don't Know what I am doing wrong. This is my forth phone I've rooted and installed custom roms. I just upgraded from lollypop to Marshmellow, I was running moar rom on lollypop, no problems.
After I upgraded I lost root access so I re-rooted. But now I can not seem to have success on installing a new rom, I've tried two different roms. I follow the instructions and it begins to load and just sits there, even after a good 20 minutes or so. I'm figuring I'm missing something here, please help. My stasts: ,Sprint carreir, model sm-G900P, build MMB29M.G900PVPU3CPCA
Click to expand...
Click to collapse
You can't flash lp roms anymore since you have mm bootloader and modem
Hbk6699 said:
You can't flash lp roms anymore since you have mm bootloader and modem
Click to expand...
Click to collapse
Yes he can .. he just need to flash the lollipop modem and bootloader
Supernatural77 said:
Yes he can .. he just need to flash the lollipop modem and bootloader
Click to expand...
Click to collapse
Duh! That's why i said he can't flash lp rom with mm bootloader and modem.
Ok, sorry for being such a dumb ass, but can someone walk me through this. I only know enough to be a total danger to myself and don't want to really f something up that I can't fix.

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