[Q] Unknown IMEI/Baseband version issue - Galaxy S II Q&A, Help & Troubleshooting

Hello people, I have a rather peculiar issue with my SII
I have had this issue for some time now and really doesnt bother me that much, its just annoying. And its just now that I have bothered writing a post about it.
If Ive run out of battery, I plug my phone into the charger, turn it on while its charging, I get no service, not prompted to input PIN and get the Uknown IMEI\baseband version. But if I let it charge a couple of minutes, unplug the charger and turn it on, everything works fine. Whats going on here?
I think this problem occured after installing one of bmarko's MIUI roms. I have since full wiped and restored stock rom. Upgraded two new official samsung roms as they have been released, currently running XWKI8 unrooted completely stock and the issue still persist.
I have searched around and there are similar cases out there but not really any clear solutions. Theres even a post over at cyanogenmods forum site, but no replies.
As said earlier its not really a big issue for me, not expecting a immediate solution but I would really like to understand the problem if someone has the information since I dont have the technical competence to understand it myself. I obviously havent corrupted or lost anything in my efs folder since its working without the charger, or? Could there be remains of a bug from another rom still in the system causing this?
Any replies would be appreciated, thanks.

Same Problem
Hey FlipTrick,
I got exactly the same problem. Dont remember how it happened exactly, but do remember I didn't do anything exotic. Can't display my IMEI, unknown baseband version and no prompt for my PIN.
I Tried several things:
- Reflashed the advised codeworx kernel using odin.
- ReInstalled CM 7.1 and tried nightly version.
- Reflashed different RADIO ROMS from XDA (goo.gl/TjoaM)
Nothing worked. Does anyone know what the problem might be? Or know what I could try next?
Greetings,
Xianduras

I had this problem once when I used a jig to reset the flash counter. Given the modem (and the IMEI) wasn't showing up in the phone details, I reflashed the modem which fixed it.
Occasionally after a reboot my modem/IMEI details take around 20-30 seconds to appear, but they've never not turned up/left me without service apart from that one occasion.

problem gone?!
Problem seems to be gone, noticed it after flashing Hydrog3n rom. Cant say if thats the solution though, havent tested it for awhile and i've flashed alot of roms

Related

ICS ROMS + Wireless Problems

Hi
I have tried many ICS roms and they seem to have wireless problems.
at times it takes time for them to connect or at times they are not able to connect. sometime there is no error message but at times i get authentication error (btw authentication credentials are correct). Is something wrong with ICS. Si anyone else have these problems. Is there any fix for it. i have tried many ics roms with different combination of kernels, mostly its the same issue.
i always have to revert back to GB rom and wireless is fine.connects instantly
any help will be appreciated.
thanks
Hi,
Same here. But I can't decide if it is because of juice defender or ICS. In GB worked ok even with Juice defender.
Sent from my GT-I9100 using Tapatalk
xinfinityoO said:
Hi
I have tried many ICS roms and they seem to have wireless problems.
at times it takes time for them to connect or at times they are not able to connect. sometime there is no error message but at times i get authentication error (btw authentication credentials are correct). Is something wrong with ICS. Si anyone else have these problems. Is there any fix for it. i have tried many ics roms with different combination of kernels, mostly its the same issue.
i always have to revert back to GB rom and wireless is fine.connects instantly
any help will be appreciated.
thanks
Click to expand...
Click to collapse
I've had the same problem. Tried many different ICS roms over the last 2 weeks or so.
The last one I tried - HyDrOG3N-ICS was horrible...
Wireless would not connect at all, even though I was standing right next to the router.
After reading through the forums etc I decided to start from scratch.
I reloaded stock Samsung rom with odin, hard reset the phone, formatted my external sdcard and deleted everything on the int sdcard.
I then loaded latest siyah GB kernel.
After this, I install HyDrOG3N-ICS 23.03
Installed GApps
Rebooted and waited 20 minutes (read it somewhere on the forums)
Rebooted and changed to SiyahKernel v3.0beta6 kernel
And finally installed DXLP7 modem.
I then reloaded all my apps from Market (Not apps restored from backups)
After all this, everything seems to work very well... Wireless is connected and working well.
I do have a problem with mobile data disconnecting every now and then, but it returns after a minute or so - might even be a problem with my provider.
I dont know which one of these steps was actually required - but this sorted it out for me.
It's almost like I had 'leftover' bits and pieces of all the different roms I tried... If it makes sense?
I dont know enough to confirm if this was the case - perhaps its not possible.
Perhaps it was just a happy shot that it all worked for me.
If you have a couple of hours spare - give it a bash...
Cheers
jakezpeenz said:
I've had the same problem. Tried many different ICS roms over the last 2 weeks or so.
The last one I tried - HyDrOG3N-ICS was horrible...
Wireless would not connect at all, even though I was standing right next to the router.
After reading through the forums etc I decided to start from scratch.
I reloaded stock Samsung rom with odin, hard reset the phone, formatted my external sdcard and deleted everything on the int sdcard.
I then loaded latest siyah GB kernel.
After this, I install HyDrOG3N-ICS 23.03
Installed GApps
Rebooted and waited 20 minutes (read it somewhere on the forums)
Rebooted and changed to SiyahKernel v3.0beta6 kernel
And finally installed DXLP7 modem.
I then reloaded all my apps from Market (Not apps restored from backups)
After all this, everything seems to work very well... Wireless is connected and working well.
I do have a problem with mobile data disconnecting every now and then, but it returns after a minute or so - might even be a problem with my provider.
I dont know which one of these steps was actually required - but this sorted it out for me.
It's almost like I had 'leftover' bits and pieces of all the different roms I tried... If it makes sense?
I dont know enough to confirm if this was the case - perhaps its not possible.
Perhaps it was just a happy shot that it all worked for me.
If you have a couple of hours spare - give it a bash...
Cheers
Click to expand...
Click to collapse
i have read many ppl have some issues with wireless on ICS. i was thinking about doing a factory reset , wipe both my internal and external storage.. but seems like quite a big job getting everything back..oh wellif i am really tempted i will go ahead and do it..but will wait for a while for more ICS build to come out.could be a bug in the official roms itself

[Q] Phone completely freezes after ICS update. HELP!!!

Hi guys,
I have a huge problem. I had a stock GB firmware customized by Optus (carrier in Australia) on my S2 I then decided to change to the new ICS 4.0.4. I downloaded the stock unbranded firmware from SamMobile (Australia 2012 September 4.0.4 I9100XWLPW, I9100XSALP6, XSA) I updated using Odin. Before I did the update I reset the phone, did the update, it all went smoothly. After the update I reset the phone again and then proceeded to reinstall all my apps and restore my contacts, sms, etc.
The phone works and all functions on it work, however now very randomly the phone would totally freeze. The phone would be in standby, the screen would come on and it would be frozen. The screen stay on all the time and it does not respond at all. It will stay frozen until I restart the phone by pressing Home+power buttons to restart it.
After restart it all works fine for a few hours, sometimes a day and would just lock up again. The phone is not rooted and as I said i just changed the firmware from the Optus branded GB 2.3.6 to unbranded stock ICS 4.0.4 by using Odin.
Is there a way to find out what is causing the phone to lock up like that? Any suggestions would be helpful.
and then proceeded to reinstall all my apps and restore my contacts, sms, etc.
Click to expand...
Click to collapse
I hope you haven't restored any data app?
przemcio510 said:
I hope you haven't restored any data app?
Click to expand...
Click to collapse
I made sure that I didn't restore any data apps. The only apps that got restored are the ones that get automatically restored by Play store.
I have disabled the live wallpaper that I had and it seems to have stopped the freezing for the moment. I will report on what I find out.
In the mean time if anyone else has a similar issue or has a definite solution please let me know.
Thanks
i know this is a resurrection, but don't see it has been resolved.
also found same/similar problem on another topic, but no resolution either.
couldn't find any resolution anywhere on the net, but possibly i'm just missing it (searching for wrong parameters?)
anyway, a friend of mine bought second-hand (third or even fourth hand to be precise) i9100 with 2.3.6 (stock KI3) on it. the guy who sold it to him said something like: "it works best on 2.3, on 4.x it's buggy".
it was working fine, but friend wanted newer OS, so we tried update. it didn't work, and i found out CSC was broken/missing. somehow i managed to repair it, and update was finally working, but was unable to find any for our location.
so next step was to find stock rom that would work on the device, and then i tried four different 4.1.2 stock roms from this topic.
after flashing it through odin, every one was acting fine, until couple of minutes after it started freezing or rebooting randomly.
then i tried flashing CWM, and flashing from sd card, but it was all the same.
wiping data, cache and dalvik cache, prior to flashing. wiping data after flashing...
nothing seemed to work.
GB works rock solid, ICS works better than JB, but stills it freezes or restarts randomly.
tried CM10, but all the same, except it works a bit faster then official JB. but who cares about speed if it freezes/restarts constantly?
back to who knows which build... freeze... samsung galaxy s2 - i9100... with yellow triangle... booting stopped.
so i decided to dig deeper, trying to find hungarian stock build (country we were told the phone came from) not being sure that KI3 is what the phone came actually with. i found 4.0.3, put it on SD card, wiped data, cache, flashed CWM, wiped data, cache, dalvik cache, flashed 4.0.3 from sd, wiped data, booted, entered location for updates - hungary. update found, hooray... downloading... installing... rebooting... working?
nope... it's worse than ever. trying to log onto google account. typing in email add.... freeze... switching phone on - freeze... thinking about... freeze.
i couldn't sit still. yellow triangle, all those reboots/freezes... at least i wanted that triangle gone, and without a JIG, there was only solution for me was to try triangle away. it wasn't available for download in my country from play store, so luckily xda was there.
somehow i managed to download it from the device, install it, click remove the triangle... it did it's magic, rebooted... and miracle happened!
no more freezes.
so i started torturing poor phone, benchmarking, playing games, listening to music.... it seemed stable for about an hour.
so i said to myself:
- it's possible that previous owners tried to upgrade it to newer firmware, and somehow screwed up the bootloader, which was fixed by this app? maybe that was all there was from the beginning? why not try putting 4.1.2?
and i did... took 4.1.2 spanish build from already mentioned page above, flashed it... and voila. working JB... torturing the phone... playing with it... hour passes, another hour...
friend wakes up... takes his phone in awe, starts playing with it.. we talk a bit... and then that look it just froze again!
from that moment on, the phone again starts restarting or freezing randomly...
and, yes, i still have no clue what could be the cause. it doesn't matter if wifi is on or off, if you're talking on the phone or not, bluetooth and gps are always off. only thing that he noticed is that it usually happens while he's using the phone (meaning: operating the digitizer or buttons). if he starts music playback and not touching buttons or screen, it will probably play for hours.
one more thing, but i doubt it would be the case. the battery in the phone is not original one that was shipped with it, but a quality replacement.
it doesn't feel as if the phone is overheating... so i don't know what else i could do with it.
for now, it's back to 2.3.6.
we both lost a week, torturing ourselves with this problem.
i don't know is there anything i could add more?
all suggestions are welcome.
cheers
Maybe try kernel cleaning script and try philz or siyah kernels.
You shouldn't have to flash a custom kernel so your phone won't freeze, but yes, you could run a nuke script in order to wipe clean all custom ROM's leftovers.
Try flashin' jb via mobile odin, see if it keeps freezing up on you. If so, nuke it up.
Sent from the little guy
i'll try them out.
probably for the weekend, if not sooner. will report back here with info.
any other suggestions are also welcome.
thanks a lot.
cheers
ok, so here are some updates.
i finally got my hands back on my friends phone, and tried nuking remains of older flashes.
following that, i flashed stock spanish rom from above mentioned page, updated after installation to spanish update... and after a few minutes, sudden reboot...
so, went back to nuking, and flashed stock hungarian 4.0.3 i found elsewhere (mentioned in my earlier post. don't remember origin... if i find the link on another computer where i downloaded it on, i'll post the link). tried updating, says no updates found.
started torturing the device. it seemed solid, but battery reported it level was low, so hooked it up onto charger and all seemed well. but phone seemed a bit too hot.
after few minutes (this was all about half an hour to hour after flashing to 4.0.3), again freeze.
after rebooting the phone, battery was at 9%, as if processes were draining battery faster than charger recharged it.
so, i figured i gotta try original battery. so i switched his battery with genuine from my phone.
phone seems stable and less hot, for now.
still checking if it is going to freeze or reboot again.
it's about one hour since battery change. still on charger and using wifi and playing around with apps.
i'll check in with news later.
cheers
I have the same issue.but my battery is original.
What I noticed that the phone stuck when I receive an update notification.
Can I stop softwsre to ask for updates? ???
Sent from my GT-I9100G using xda app-developers app
^go to settings, about device, software update and detick auto update. that should stop it from trying to self-update.
ok, so here is an update to my friend's phone status.
currently on hungarian 4.0.3. about 3-4 freezes/reboots a day. sporadic connection breakups during calls. also, when we talk i can hear myself back. this brings me to conclusion it has to do with modem firmware. i found this topic, so i'll try putting that and see what will happen.
if that doesn't solve anything, my question is this: is there any way of knowing which firmware/rom was originally put on the device, since i don't know the real background of the device? i.e. some way of entering IMEI and finding out what should be on it?
cheers
EDIT: tried KH3 modem, no changes... i could still hear myself while talking to my friend on that device. also, it froze couple minutes later. going back to 2.3.5-2.3.6 for now.
so after couple of months, i finally got my hands back onto this phone...
gave my friend my phone, so i could play a bit with this faulty one.
i have played with it for a couple of days now, and here are things i've tried.
i received it from a friend with 2.3.5 on it which had triggered custom binary counter. he's been using it for couple months without any problems.
so i rooted it and installed triangle away again... reset counter, cleared and flashed hungarian stock (telenor) 4.1.2... random freezes again.
tried several stock roms, mostly hungarian ones (4.0.3, 4.1.2). even reformatted with .pit file... random freezes.
reformatted again with .pit and put XXLSJ, installed stability test and let it run...
cpu stability test 15.5 hours no problems, no freezes. then i realized it didn't have a sim card, so i rebooted phone and installed sim card. let it test cpu+gpu for 9 hours... no errors, no problems, no freezes.
so i thought, maybe it's all fine? but it wasn't! as soon as i took phone into my hands and started going through menus it froze!
so i tried SGII_repair, rooted and did "repair"... but nothing changed... still random freezes.
if i just let it do the stability test, it'll probably work forever.
things i've noticed:
- serial number is wrong format (14 hex digits instead of 11 alphanumeric)
- during stability test, cpu frequency dropped from 1200 to 800 mhz (maybe because it was getting warmer? 42-43C during cpu only+charging battery, and about 39-40 during cpu+gpu test)
i tried to find out which firmware is latest according to serial number via kies, but it gave me error.
i know it's from hungarian market, but don't know which exact part of it (branded or not).
don't know what previous owners did to it, and don't have backups of original efs or anything original.
i just want to make it work, don't care much about custom firmwares. i'd be happy even with unrooted stock... just for it to work!
i have no ideas what else to do.
anyone?
finally, as i couldn't resolve the problem, i returned phone to 2.3.5 and sold it as is.
thanks to all people who tried to help.
cheers

[Q] Device suddenly stops working and needs to be wiped

I have a serious issue with both my I9100 devices.
it suddenly freezes and requires reboot. when i do it, it stuck on boot screen (Where the yellow triangle would be if using unofficial firmware)
nothing helps, only wipe data. once I wipe, device loads fine and starts working again.
I tought at first its rom/kernel related, I switched everything and even tried stock rom.
it keeps happening...today, I tried to swap batteries as one got empty, I took the battery out of the stocked-rom device (after turning it off) and then later when i switched it on, it had to be wiped.
same as with my other device.
Anyone has any clue what this is about?
Its became a big issue for me, I cant flash/wipe every few days...
One device is on Neatrom 4.4 lite, the other stock-everything, both 4.1.2
eranyanay said:
I have a serious issue with both my I9100 devices.
it suddenly freezes and requires reboot. when i do it, it stuck on boot screen (Where the yellow triangle would be if using unofficial firmware)
nothing helps, only wipe data. once I wipe, device loads fine and starts working again.
I tought at first its rom/kernel related, I switched everything and even tried stock rom.
it keeps happening...today, I tried to swap batteries as one got empty, I took the battery out of the stocked-rom device (after turning it off) and then later when i switched it on, it had to be wiped.
same as with my other device.
Anyone has any clue what this is about?
Its became a big issue for me, I cant flash/wipe every few days...
One device is on Neatrom 4.4 lite, the other stock-everything, both 4.1.2
Click to expand...
Click to collapse
u can just rewert to stock ICS 4.0.3 firmware on both the phones and check for the issue (whether its firmware related or any hardware issue as such)
thanks for your help,
It did not happen on 403, tough it didnt happen on 4.1.2 for some while either.
what else would you suggest me to test?
eranyanay said:
thanks for your help,
It did not happen on 403, tough it didnt happen on 4.1.2 for some while either.
what else would you suggest me to test?
Click to expand...
Click to collapse
1) with 403 for some time once again to ensure no issues of freezing.
2)then a different 4.1.2 stock/custom rom altogether to check for the same(freezing) issue.
stay for some time on those firmwares and see (may be one or two charge cycles).
3) do not install any mods on top of the firmware, just stay stock and see
One of the devices is already back to 403, while the second one on stock 412
the hardest thing to tell if 403 solves it or not, as it happens occasionally, once in a week or two.
I tried two different stock roms, so that would rule out #2.
The weird thing is that wiping data is enough.
data is separated from the rom itself, yet it causes the entire device not to boot anymore.

Help unknown baseband no imei no signal on shw-m250s

So my phone is shw-m250s T (I don't know but like there's Olleh version this one has T logo on it so it may help)
My phone was first on 2.3.5 perfectly working without no problem but only volume button not working so i got those fixed and this whole adventure began. Since i was able to go into download mode and flash things i wanted to convert my phone to i9100 so i did using this thread:
http://forum.xda-developers.com/showthread.php?p=24705250
Then later i learned that there's freakin 4.0.4 ICS official update on my phone so i freaking installed it and this all started from here.
First i was getting random signal lose and sometimes no signal always but i didn't take it seriously coz reboot was temporarily fixing this problem.
But since it was annoying me and i wanted to try new roms out there i tried to install Cyanogenmod v10 (i think) and after some try it worked and was nice there but totally no signal no pin code ask or whatever then i switched to Paranoid Android (latest version with halo and stuff)
It was even more nice than cyanogenmod and i enjoyed it but still no freaking signal or whatever but also this rom was draining my battery like hell even it's locked it drains my battery and when i sleep and wake up it's 13% from 99% around 8 sleep. Then i searched all over internet trying whole lot of things but i still didn't find it. I learned that this all things are because of corrupted efs folder bla bla and then i tried EFSPro Backup yeah it looked nice and it said it's done and gave me tar file with efs.img in it. I tried restore and it said success but still no signal or whatever please help guys i need all your help to fix my phone and get it to work.
My phone specs in case of need: (It's all lost way back then but i'm looking things back)
KCC-CMM-SEC-SHWM250S
FCC ID: A3LSHWM250S
and all else is korean strange things and why my imei is not here...

[Help] Lost IMEI after update to , and downgrade

Well, received my Sony Xperia Z Ultra C6833 a couple of days ago.
Received a notice on the OTA, upgraded to 14.1.B.2.257
I encountered random restart issues whenever Wifi is activated, so I thought, fine.
I finally have access to my computer, installed the PC companion, it prompt me with a new 14.2.A.0.290 update.
Again, I updated my phone, hoping it'll fix the Wifi problem.
After restarting, I did a test, as usual. Wifi problem persists, and what's worse, a new problem. Wifi and Playstation 3 SixAxis controller connected using bluetooth didn't play nice, caused my phone to reboot.
I know a lot of people downgraded the firmware back to the previous version, with NAN backups etc.
And some even managed to restore their IMEI back to normal.
But for my case, I haven't root my phone, attempt to downgrade it using Flashtool, lost my IMEI.
Seems that I have no choice, but to return it back to 14.2.A.0.290 praying that it works, and I still can't see my IMEI.
No, I don't have a NAN backup. That's the part which gave me a headache. I've messed around with HTC one X (a year ago), never had this problem problem before, and it's something new I've learnt from you guys today.
Tried cyangenmod's boot.img, doesn't do me any good.
Anyone managed to recover their IMEI here?
Otherwise I might have to get it back to the dealer for a replacement.
Update: Thanks to krabappel2548's guide, I've managed to flash it to 14.2.A.0.290 again and got my IMEI back, but SixAxis still won't play nice with Wifi, and the problem with random reboots while Wifi is ON still persists.
we have the same issue, mine happened during the old update, after ota wifi gets stuck, wont turn on and reboots the device. upto now its still not fixed. 3 updates have passed and still the issue persist. hope you find a fix it will help me too. tried everything from downgrading, flashing custom rom,kernel, upgrade, unlock, relock but still cant fix it
I guess i'm not the only one then. I can live with the wifi issue for the time being as long as i stick to using data. But i fear it's going to affect tethering should i need that.
Please take a look at this post, it may help you. --> http://forum.xda-developers.com/showthread.php?t=2573349
nopponm said:
Please take a look at this post, it may help you. --> http://forum.xda-developers.com/showthread.php?t=2573349
Click to expand...
Click to collapse
Read it the moment I discovered that my IMEI is missing.
I tried reflashing excluding the baseband, doesn't work for me, right after i realized i have a missing IMEI.
Read up on the android emulator, but haven't tried it, as my computer is kinda old, took forever to run it. Will try it once I get my hands on a faster computer
Bah. Crashed when I tried to use my qx100 which i've just received. Haha. Anyone else has any fun with qx100 and z ultra combo? The Z ultra almost reminds me of my ex-girlfriend.
Meanwhile, I can't wait for kit Kat, and hope they really squash these bugs
The best thing would be to contact Sony and make them aware of this bug. Losing your IMEI by simply updating should never happen and it's quite a serious bug.
Actually i lost it after downgrading. Downgrade is simply because of phone keeps rebooting after I turn Wifi on.
LordManhattan said:
The best thing would be to contact Sony and make them aware of this bug. Losing your IMEI by simply updating should never happen and it's quite a serious bug.
Click to expand...
Click to collapse
let's hope this is the answer : p
New build 14.2.A.1.114
abuihsan said:
let's hope this is the answer : p
New build 14.2.A.1.114
Click to expand...
Click to collapse
I certainly hope so too.
Hope it fixes the rebooting issue with WiFi enabled.
Or the Google Play Edition port if it does fix the problem too
Anyone tested the new update yet? Does it fix the wifi issues with crashing/rebooting?
ok so i purchased my phone on amazon and got it somewhere around feb 25th, i got a message on the phone to update software so naturally i did, then i discovered what rooting does and i decided to follow some youtube instructions to flash my phone to an earlier firmware the link wasnt working so i found another which was C6802_14.1.B.0.475_GENERIC Hong Kong.ftf after flashing this i lost my imei its all zeros and i then tried flashing C6802_14.1.B.1.526_M3dD0g.ftf with no luck so im trying to find out what the updated software was that i must have downloaded when i first got the phone given the date i had recieved it im thinking that the 14.2.A.1.142 is the correct one that i must have updated to, i was running version 4.3 jelly bean before all this happened i also have this problem where everytime i turn off the phone and turn it back on it is in the chinese writing again and asks me to select my language again anyone know what to do short of return the phone while i still got time my internet is extremely slow im tired of it taking 4 hours to load a new ftf just to find out its not the right one ive heard some where hving success with the 290 getting their imei back but im thinking thats the software they started with or updated to to get it back so i have no idea which one i started with or which one i updated to all i know is the date i got it and that possibly its the 14.2.A.1.142 looks really familiar im downloading that one now so we will see what happens and i also read something about flashing excluding the basebands so if that is part of it please make it as clear as possible im obviously a noob but im learning quick
Pleas dont ask the same question in multiple threads.
See my reply to the other thread you necromanced

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