Downgraded » Network Issues follow - Xperia Z1 Q&A, Help & Troubleshooting

I Recently began to have issues with my Z1 (Google frameworks and gapps were wrecked(dont ask how)) anyways long story short it ended up bricking itself for a moment, i eventually got it working through flashtool and flashed an old firmware as a result [.108] anyways since the new firmware had taking my phone, ive been getting issues with wifi and coverage has gone to hell. anyone got any ideas, it doesnt seem to be firmware related as i've tried a few at the time of writing...possibly something to do with 3g-4g stuff?, (Apologies for bad formating and gramatical errors currently writing this from a ps4 lmao)

Go to Settings and About phone and see the "Baseband" if it says "Unknown" then flash this and are you sure you are flashing the right FTF? look for the right firmware.

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[Q] Please Help. 3 Day old SGS behaving very strangely

Hello everybody.
I am having serious trouble with my phone and I was hoping some of you might be able to help me out.
I just bought my SGS 3 days ago. It came with android 2.1.1 eclair installed.
I had read that that version was not the best ( the first thing I saw when I opened the phone actually was an error screen, and the lag was horrible) so when I got home I decided to try and upgrade it using the official software for it (Kies).
Unfortunately Kies would simply disconnect my phone when I told it to upgrade, after which it would ask me to upgrade again >.>
So I decided to use Odin to flash one of the newer 2.2.1 versions.
I flashed a 'JS3' version with a repartition to 803 pit , but it crashed after rebooting with the dbdata error (which as I learned later was caused by not flashing a full firmware).
I flashed JPU after which worked great. It was fast and responsive.
However my phone kept crashing. Whether on standby, using apps, or just trying to dial a number, it would freeze, start vibrating, and sometime reset, other times just stay frozen until I force shut down it from the power button.
I flashed JS5 afterwards, with full cache clearing, factory reset etc. Still crashed.
Then I tried flashing Darky's 9.2 Ressurection. Loved it but I couldn't even set up my google account because it crashed constantly.
Then I went back to what I believe is the current official version for my location and carrier (Vodafone Romania), JP9 .
After flashing it didn't crash, but after a while (one night), it started crashing like crazy, even wound up with weird gray lines and a freeze in the morning.
I was hoping someone here might know what is wrong with it. I already sent it back to be serviced but I am thinking maybe I broke it somehow and would like to know how so I don't do it again.
The phone is network locked, which I later learned is usually a bad thing for flashing, unfortunately I didn't know about that when I started.
well first of you want to remove the network lock so try these:
http://forum.xda-developers.com/showthread.php?t=761045
http://forum.xda-developers.com/showthread.php?t=913681
next step is to register on www.samfirmware.com (its free) and here is where you will get all the latest official firmwares from samsung..
what you want to do is download (XWJS5) with all 3 files and PIT and flash that through odin with RE-PARTITION..
Before you do that, put your phone into recovery mode (volume up + Home button + Power button ) and do a factory reset / wipe cache ect...
so when you have done that and flashed the new firmware. let me know what the outcome is..
another thing.. ALWAYS MAKE SURE KIES IS CLOSED.... EVEN IN THE ICON TRAY... AND MAKE SURE DRIVERS ARE UP TO DATE.
other than that you shouldn't have any problems
hi, thanks for the advice.
I already did most of that however. I did a factory reset numerous times, and I also did a full repartition flash more than once, to no avail.
I am waiting to get it back from warranty service now but I am wondering what went wrong.
Was it broken when I bought it or did I damage it somehow by trying to flash it while network locked ?
flashing with network lock wouldnt make everything force close. the worst thing that could happen when flashing with network lock is not picking up a signal and possible IMEI corruption.
i think you may have just flashed the wrong ROM, it happens to us all, but the more you do it the more experienced you become and you soon learn methods to restore things..
dont worry too much it will be fine when it comes back from samsung, just be sure to read up properly if you have any doubts.. or ask a question first you will get a reply quicker than you can Unbrick your phone..
My phone seems to hate the 803 pit file. Lots of force closes when I used it. Try using 512, see if that works any better.

dead NFC and rear led on all roms

hey,
I had 4.2.2 in my 5503. Couple days ago I decided to upgrade it to 4.3 using flashtool, because there wasn't official 4.3 for my region yet . After that, I noticed my led and NFC are dead. Led isn't working (no flash when making pics, not working as a flashight). NFC unchecks just after when I click on it. Tried: downgrade, delete/rename usf (like in xperia z), many others official roms. tried fix and upgrade by SUS and SPCC. No changes. Also tried CM11 4.4, but still led is dead, NFC option can't be even marked. Now I'm on rooted 4.3. Any ideas how to bring them back? And no, backup doesn't exist
waw that's not cool.. do you erase the whole system when you flash?
Made in ZR
Yes. I thought it is better to have clean instal. Habit of installing roms on old phone. Everything else seems to work fine. I'm out of ideas.
hmm it's weird dude. well I suggest :
ensure that you bootloader is locked
do a fresh full flash with all wipes
do a reset in settings > backup & reset
then go into service menu > service tests > flash led
for the service menu, at the stock dialer, type : *#*#7378423#*#*
if it still doesn't work after this, I'm afraid this is hardware related.
Ilko said:
hmm it's weird dude. well I suggest :
ensure that you bootloader is locked
do a fresh full flash with all wipes
do a reset in settings > backup & reset
then go into service menu > service tests > flash led
for the service menu, at the stock dialer, type : *#*#7378423#*#*
if it still doesn't work after this, I'm afraid this is hardware related.
Click to expand...
Click to collapse
Did that many times. To have clear conscience I connected phone to another usb. formated, flashed .67 with wipes. After reset, in service menu led is still dead. connected to pc, updated with SUS to .569. and same story. I'm sure they were working before 1st flash and upgrade. If this is hardware problem, should NFC unchecks itself just after I click on it?
Ehh I suppose, I have to deal with it. There is no cure for my zr
ps. in /system/app/ I can see ncf.apk & nfc.odex only. That's it, right?
well I don't know mate, did you ever unlocked the BL? It may be drm related also
Made in ZR
NFC firmware needs update?
I got my ZR a few weeks ago, it came with 4.1.2 on it.
Straight away I hooked it up to PC companion and it updated to 4.2.2, during the first reboot I got a message on the screen for quite a while: "Updating NFC firmware"
I then had problems and thought it was due to 4.2.2, I downloaded & flashed a 4.1.2 ROM, once again, on the first reboot I got the "Updating NFC firmware" message.
Then I realized that the problems weren't due to 4.1.2 and flashed 4.2.2 again, once again got the "Updating NFC firmware" message.
This might not be much use to you but it seems to me that the NFC firmware needs to match the version of Android you're running.
Sorry, no idea how to update it manually, just thought it's something you might like to investigate.
Maybe start here ....
http://forum.xda-developers.com/showthread.php?t=2284166
Ilko, yes. BL was unlocked. I had thought, drm can be involved with it. If yes, I'm pretty ***. I don't see any other explanation. many official roms. repairs by sus and companion. checked in buildprop editor, and everything looks ok.
alan573819, when I bought mine it was 4.1.2 also. Couple weeks later upgrated it to 4.2.2. but I don't remember that NFC dialog. I just don't remember, so it doesn't mean I never had it it was long time ago. I know that topic. Believe me, I know them all I'm silent reader xda since se k800i. Always found answers without asking. Until now.. I had to register, because no1 have same problem. with z, there is problem only with NFC (no1 complains about led), and they can fix it by deleting usf. It doesn't work for me. anyway, on 4.2.2 I had no problems with NFC or led. everything worked perfect until I decided to upgrade it to 4.3 with flashtool.
my phone was unlocked, rooted, had .310, .67, .569 for at least 3 different regions, had CM11 4.4, was repaired and upgraded by SUS and Companion. No changes. It just has to have something with drm, because I don't believe that hardware was broken during update. drm can explain it. but.. that's weird if NFC and especially led has something to do with it.
okay, then did your ever relocked it? backed up TA? restored it?
Made in ZR
yes, I have relocked zr.
Like I said before, I didn't make any backups. Didn't expect any problems so I just wiped and flashed my phone. On the other hand- who expects them? . I can risk with my own phone. If I do something for others, I always do backups, double checks etc.

[Q] Mobile network crisis after flash

So, I'm having some issues regarding my recently flashed XSP C5302.
Model: C5302
Android Version: 4.3
Baseband version: 8960A-AAAAATAZQ-40031007-18
Build number: 12.1.A.1.201
I'm on locked BL.
Thing is, I flashed it as soon as I got my hands on it due to that annoying flickering screen, tried to downgrade it to 4.2.1. It was the first time I did that, so I went through many tuts to get it right.
At first I flashed a .254 rom, and when I entered the About screen, model had switched to C5303. What I did was follow DoomLord's guide to root it, instal CWR and flashed a deodexed .254 rom for C5302(this one: http://forum.xda-developers.com/showthread.php?t=2423625). Everything back to normal.
But then I noticed my mobile data wasn't working, so I thought it may have been fault of the deodexed rom. Sooo, I upgraded it AGAIN to 4.3 using PC Companion, just to find out that the mobile issue was not having the APN correctly configured. Sigh.
And well, I'm now stuck again on 4.3, but at least my mobile data package is working. However, it's extremely slow. I mean, I can see the H and H+ icon, but even on H+ it takes ages to send messages and connect. At first I wondered if the baseband had anything to do with it, but when I flashed the rom I checked everything but Kernel and System, so...
So my question is, is it possible that I did something that "damaged" my mobile data connectivity? If so, could somebody please suggest any solution? I must say, my service provider sucks, so it could be their problem too, and I'm just here crying over spilled milk with no reason at all.
Thanks in advance!
Probably your service provider - I must have tried 100's of custom roms and whilst some have meant that data didn't work, this was caused by buggy software, never damage to the phone.
Parkside said:
Probably your service provider - I must have tried 100's of custom roms and whilst some have meant that data didn't work, this was caused by buggy software, never damage to the phone.
Click to expand...
Click to collapse
Yes, I'm pretty sure too, but oh I was so damn worried! Thanks

[Q] "Not registered on network" error. *PLEASE HELP*

Yesterday, my phone just decided it didn't want to be connected to a network anymore. I was running DynamicKat ROM. It just happened out of nowhere and continues today. I've tried flashing different ROMS and they install fine, but I still can't register to a network. I believe I need to update the modem, but I'm not sure. I'm currently on baseband version ANK4, but I think I need to update to BOC4. Does this sound correct? Any advice would be great, and if you might point me in the direction of any files needed it would be greatly appreciated as well. No need to link, but just a general section where I could find the files would be helpful as I seem to have little luck with the search function here. Thank you in advance.
EDIT: Ehhh... Nevermind. It just started working again. I can't explain it. Suddenly I was connected again.
Always a good idea to check your APN settings if you are in a known coverage area with a new ROM. Been my problem 90 percent of the time
Sent from my SM-N910T using Tapatalk
Applejackson said:
Yesterday, my phone just decided it didn't want to be connected to a network anymore. I was running DynamicKat ROM. It just happened out of nowhere and continues today. I've tried flashing different ROMS and they install fine, but I still can't register to a network. I believe I need to update the modem, but I'm not sure. I'm currently on baseband version ANK4, but I think I need to update to BOC4. Does this sound correct? Any advice would be great, and if you might point me in the direction of any files needed it would be greatly appreciated as well. No need to link, but just a general section where I could find the files would be helpful as I seem to have little luck with the search function here. Thank you in advance.
EDIT: Ehhh... Nevermind. It just started working again. I can't explain it. Suddenly I was connected again.
Click to expand...
Click to collapse
Funny you mention this as I run the same ROM and have had this occur to me whilst traveling around my area and in and out of T-Mobile "Dead Spots" which seem to be many...
Even called T-Mobile to report and best they could tell me is go into "More Networks-Mobile Networks-Network operators" and select - Select automatically.
A real PITA when you driving down the road and need to call out or re-connect your call with someone.
Note: I've had numerous issues on different ROMS similar to this so I pretty much blame T-Mobile and their service in my area unless someone else can chime in, I would be curious...
Applejackson said:
Yesterday, my phone just decided it didn't want to be connected to a network anymore. I was running DynamicKat ROM. It just happened out of nowhere and continues today. I've tried flashing different ROMS and they install fine, but I still can't register to a network. I believe I need to update the modem, but I'm not sure. I'm currently on baseband version ANK4, but I think I need to update to BOC4. Does this sound correct? Any advice would be great, and if you might point me in the direction of any files needed it would be greatly appreciated as well. No need to link, but just a general section where I could find the files would be helpful as I seem to have little luck with the search function here. Thank you in advance.
EDIT: Ehhh... Nevermind. It just started working again. I can't explain it. Suddenly I was connected again.
Click to expand...
Click to collapse
I had a similar problem on DK, except that it was unmounting my sim card completely & I had to reboot to get it working again. Happened every hour or so, very frustrating. I tried a different rom & the issue went away, so it's definitely something funky with DK which makes me sad cause that's my favorite rom.
I just reflashed it last night though & I took the precaution of completely reflashing ANK4 through Odin and redoing root & TWRP too, then flashing DK like normal. So far, so good(and it seems to have fixed the battery life issues I was having as well, yay), so you might try that method & see if it helps for you too. But be sure to back up your internal storage first cause odin WILL wipe it. Learned this the hard way, bye-bye all my pictures & titanium backups :/
Files I used can be found here.. BOC4 is for LP, so you should be fine with ANK4.

Phone won't connect to network and custom roms don't work

So I think I messed up my phone.
TL;DR: Messed up phone by removing stock rom, Costume roms don't work except 1 and in that one IMEI is set to zero and I can't connect to any network.
several month ago I had the stock xperia z Lolipop and made a decision to root the device. I unlocked it's bootloader and did the rooting... all as planned. about a month later my phone started acting funny, so I decided to reset it, the problem is I had installed TWRP and as noob in using the app, I accidentally wiped the entire device. I thought I had bricked the thing so I left it aside.
I had been using an older phone as replacement until last week when I thought I'd give the Z another chance. I looked around this forum, found a bunch of stuff, tried a lot of roms and after failing to make 4 roms work (Cyan nougat, Cyan MM, Costumised sony 5.1.1 and a stock one I found here) I managed to find a fifth one that worked (http://forum.xda-developers.com/xperia-z/general/android-5-1-available-yuga-pabx-t3054304). I always followed the tutorials but I may have done a lot of mistakes... for example I'm not even sure what kernel is and if I needed to change it for any of the roms or if I needed to like wipe the entire system or not before flashing ( I did all the time), and what about rooting? does the system require a previous rooted rom to install new ones? don't we simply format the entire device?.
Now the major problem of the working rom is that my phone can't connect to it's simcard network, the simcard is working since it requires pincode on start and the phone can find the networks by manual search, it simply gives an error "network XXX unavailable". I looked around and saw that my IMEI is set to all zero's in the phone about section. this could be unrelated to the network problem... but I don't have much expertise in these stuff.
So right now it seems like I can't install any other roms (they won't even start up, most get stuck during boot) and the only one I can install doesn't give me network access.
Any Ideas?

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