[Q] Wifi Greyed Out After Rooting, Nothing fixes it - Galaxy Note 3 Q&A, Help & Troubleshooting

Hi,
I got a bricked Note 3 SM-N9005 from my brother and managed to make it boot with an OEM FW 4.4.2 from sammobile. Before that, the phone was freezing all the time and with null IMEI / unknown baseband.
Now it boots and was working fine until I tried to root with the Autoroot ODIN flash able file from the forums here.
The phone now boots, and works fine until I connect to wifi. First network that is connected works fine, but if it disconnects or if I try to connect to another, wifi gets greyed out and I'm only able to use it if I do a factory restore. Flashing the OEM rom is not working. I get the same problem.
Any fixes? Thanks

dd.deme said:
Hi,
I got a bricked Note 3 SM-N9005 from my brother and managed to make it boot with an OEM FW 4.4.2 from sammobile. Before that, the phone was freezing all the time and with null IMEI / unknown baseband.
Now it boots and was working fine until I tried to root with the Autoroot ODIN flash able file from the forums here.
The phone now boots, and works fine until I connect to wifi. First network that is connected works fine, but if it disconnects or if I try to connect to another, wifi gets greyed out and I'm only able to use it if I do a factory restore. Flashing the OEM rom is not working. I get the same problem.
Any fixes? Thanks
Click to expand...
Click to collapse
im not a pro with any of this but from my knowledge, factory reset ur phone, create back ups if needed. if that doesnt work get the latest firmware like nf4 or ng1 for ur phone which should work. then for root use http://forum.xda-developers.com/galaxy-note-3/general/root-root-xxufnf4-stock-firmware-knox-t2840150 method of just going back to he old kernel which will not allow wifi to turn on so u will need data! READ the OP post. then ur phone should be working fine i hope. this is all i can say as im not any phone guru and just telling all that ik. and ive rooted in that way and am on ng1 with root with knox 0x0.

nayanwaghmare said:
im not a pro with any of this but from my knowledge, factory reset ur phone, create back ups if needed. if that doesnt work get the latest firmware like nf4 or ng1 for ur phone which should work. then for root use http://forum.xda-developers.com/galaxy-note-3/general/root-root-xxufnf4-stock-firmware-knox-t2840150 method of just going back to he old kernel which will not allow wifi to turn on so u will need data! READ the OP post. then ur phone should be working fine i hope. this is all i can say as im not any phone guru and just telling all that ik. and ive rooted in that way and am on ng1 with root with knox 0x0.
Click to expand...
Click to collapse
No luck bud.. Sorry, was worth the try though.. I'm now going to flash Crash ROM to see if any CFW gives me any luck.

emiliodeme said:
No luck bud.. Sorry, was worth the try though.. I'm now going to flash Crash ROM to see if any CFW gives me any luck.
Click to expand...
Click to collapse
http://forum.xda-developers.com/galaxy-note-3/help/unbricked-wifi-t2819364 try this it may help

nayanwaghmare said:
http://forum.xda-developers.com/galaxy-note-3/help/unbricked-wifi-t2819364 try this it may help
Click to expand...
Click to collapse
Nothing, I tried all the things that guy did and sent him a PM but he has not answered. I'm willing to ship this phone to a good developer here and pay if necessary.

Found the fix.
Use Root Explorer.
Delete the files below that are inside /data/misc/wifi/
wpa_supplicant (folder)
wpa_supplicant.bak.conf
wpa_supplicant.conf
Go to build.prop press menu and select Text Editor than find this line:
ro.securestorage.support=true
change it to:
ro.securestorage.support=false
Save. Reboot, wifi should be fine.

Related

[Q] Service menu factory reset???`

Is there a way to get the settings in the service menu all back to factory after messing with a few and wanting to change it all back to stock?
No. What firmware are you on?
Edit what do you want to return to stock?
4.2.2
travispittman said:
4.2.2
Click to expand...
Click to collapse
Mdl? Or mf3? If mdl you can use Odin.
MDB, I was looking recently for any stock firmwares, didnt find any in the 5 mins I looked mind linking me?
travispittman said:
MDB, I was looking recently for any stock firmwares, didnt find any in the 5 mins I looked mind linking me?
Click to expand...
Click to collapse
I get stock firmware from sammobile.com. You'll have to register but it's free.
http://stockroms.net/file/GalaxyS4/SGH-I337/I337UCUAMDL_I337ATTAMDL_ATT.zip
scroll to the bottom and enter the requested code to initiate the download.
When returning to stock. I used your all in one to root, do I need to unlock the bootloader or anything.
more info*
I have tmobiles 8.5 gb data plan. yesterday I downladed a large file. This morning my data connection was really slow. So trying to work around their throttling, I went into the service menu and changed he network control>band preferences to CDMA/LTE only. Worked for a while and then things returned to normal. (Slow crappy service.) So i went a little deeper changed something else in cdma selection ended up without any service at all. Then after a lenghty talk with att and tmobile I decided to do the process to turn on aws again. After doing that the service returned, but the data is still the way it was.
I actually had it where it was saying it wasnt activated asking me activate my phone.......yeah stupid I know I shouldnt mess with things especially when I have no clue what they are. Lesson learned just trying to fix my mess
PS I am not over my data limits
travispittman said:
When returning to stock. I used your all in one to root, do I need to unlock the bootloader or anything.
Click to expand...
Click to collapse
When you return to stock, you're staying all over again. You'll have to reroot, etc. Be sure to be wary of your device trying to grab the MF3 update. Maybe take your sim out and leave wifi off while you root, backup and flash to your desired rom
xBeerdroiDx said:
When you return to stock, you're staying all over again. You'll have to reroot, etc. Be sure to be wary of your device trying to grab the MF3 update. Maybe take your sim out and leave wifi off while you root, backup and flash to your desired rom
Click to expand...
Click to collapse
I was meaning when I return to stock I never installed a diff rom because I am still stock with root. I didnt unlock the bootloader or anything. Just rooted with the all in one tool.
travispittman said:
I was meaning when I return to stock I never installed a diff rom because I am still stock with root. I didnt unlock the bootloader or anything. Just rooted with the all in one tool.
Click to expand...
Click to collapse
Don't worry about the boot loader. It's locked and you can't unlock it. After returning to stock with odin re-root it using motochopper. Do ask that with the sim out and WiFi off so you don't get the mf3 update.
See this http://forum.xda-developers.com/showthread.php?p=42320391
Man I am starting to get frustrated,,,,,,,,,.,,.,.,,.,.,.,.,.,,..,,,.I know how to root. Motochopper is what I used to begin with to install twrp and root. My phone is not coming up in odin I have all the current drivers any other things I need for the s4. I have been modding since the s2. But I am very new to the s4. Why doesnt it show up in odin?
travispittman said:
Man I am starting to get frustrated,,,,,,,,,.,,.,.,,.,.,.,.,.,,..,,,.I know how to root. Motochopper is what I used to begin with to install twrp and root. My phone is not coming up in odin I have all the current drivers any other things I need for the s4. I have been modding since the s2. But I am very new to the s4. Why doesnt it show up in odin?
Click to expand...
Click to collapse
Delete the Samsung and kies drivers.
Run ccleaner
Install the Samsung drivers
Then run Odin
finaly got odin to work flashed and rebooted. i thought flashing a rom would delete a lot of my stuff? It is all still there and now my computer doesnt connect to my phone it charges it but doesnt say it is connected.
I have tried different cables and different ports with no luck.
travispittman said:
finaly got odin to worked flashed and rebooted. i thought flashing a rom would delete a lot of my stuff? It is all still there and now my computer doesnt connect to my phone it charges it but doesnt say it is connected.
Click to expand...
Click to collapse
Odin won't touch your internal or external sd cards, the areas you store pics, music, etc. So what your seeing is normal.
So what about my other problem now? My computer not connecting to it.
travispittman said:
So what about my other problem now? My computer not connecting to it.
Click to expand...
Click to collapse
One at a time, you've rebooted and have your phone working? In development options do you have usb debugging checked?
yes. Kies, Odin, Windows, nothing recognizes it in download mode or recovery even
travispittman said:
yes. Kies, Odin, Windows, nothing recognizes it in download mode or recovery even
Click to expand...
Click to collapse
had to uncheck usb debugging to get it to work thanks thanks for all of the help I will keep up to date with my problems lol
:highfive:

[Q] Wi-Fi won't turn on?

Hi guys, I'm on an i9505 with stock ROM and everything. I had it rooted before and everything was perfect, but then I updated to 4.3, so I had to re-root. When I re-rooted, everything was still there - I just had to re-install Xposed. However, my Wi-Fi is not working anymore. Every time I click on the Wi-Fi to toggle it on, it flashes green, then turns itself off again.
What is the problem here? My build number is JSS15J.I9505XXUEMKF and my baseband versionis I9505XXUEMJ7. I rooted using CF Auto-root for I9505.
Rorschilds said:
Hi guys, I'm on an i9505 with stock ROM and everything. I had it rooted before and everything was perfect, but then I updated to 4.3, so I had to re-root. When I re-rooted, everything was still there - I just had to re-install Xposed. However, my Wi-Fi is not working anymore. Every time I click on the Wi-Fi to toggle it on, it flashes green, then turns itself off again.
What is the problem here? My build number is JSS15J.I9505XXUEMKF and my baseband versionis I9505XXUEMJ7. I rooted using CF Auto-root for I9505.
Click to expand...
Click to collapse
Download and extract then Flash this via odin by seleting phone http://d-h.st/lVI
Repulsa said:
Download and extract then Flash this via odin by seleting phone http://d-h.st/lVI
Click to expand...
Click to collapse
Thanks, I just tried it, but it didn't seem to do anything. Still turning itself off the second I turn it on.
Is it perhaps because my baseband version is not the same as my build number? I don't know much about the details and intricacies of how this stuff works, I only know the basics, but that's an idea that came up.
Or maybe I need the Wifi fix for UEMKF (my build number) rather than UEMJ7 (My baseband version)?
I'm not sure. But just some ideas.
Rorschilds said:
Thanks, I just tried it, but it didn't seem to do anything. Still turning itself off the second I turn it on.
Is it perhaps because my baseband version is not the same as my build number? I don't know much about the details and intricacies of how this stuff works, I only know the basics, but that's an idea that came up.
Or maybe I need the Wifi fix for UEMKF (my build number) rather than UEMJ7 (My baseband version)?
I'm not sure. But just some ideas.
Click to expand...
Click to collapse
Download and Extract ,then Power Off your device completely and wait a few sec and Press and hold Power+Volume down in order to reach download mode and flash it via odin, and go to settings and check your baseband if the flash are okey.
**If you are having the new bootloader XXUD flash http://www.mediafire.com/download/zriv6i5c01lqns6/GSM_Modem_XXUEMFK_and_LTE_Modem_XXUMFK.rar file with odin by selecting phone.
Repulsa said:
Download and Extract ,then Power Off your device completely and wait a few sec and Press and hold Power+Volume down in order to reach download mode and flash it via odin, and go to settings and check your baseband if the flash are okey.
**If you are having the new bootloader XXUD flash http://www.mediafire.com/download/zriv6i5c01lqns6/GSM_Modem_XXUEMFK_and_LTE_Modem_XXUMFK.rar file with odin by selecting phone.
Click to expand...
Click to collapse
Yes I know how to flash. The second link worked, thank you very much sir
Rorschilds said:
Yes I know how to flash. The second link worked, thank you very much sir
Click to expand...
Click to collapse
Glad that helps , Have a nice day sir.
the wifi problem doesn't accour cuz you root your phone it happened to my me and i was not rooted and nor flashed anything. you wake up and boom wifi won't turn on. and i use my mobile data cuz i can not turn on my wifi anymore. some say it's a hardware issue. some say it is a firmware issue. i don't know. i can't solve the problem. even i pay a technician to repair the phone buy they couldnt eighter. so i feel dumb when someone says this worked for me or that solved the issue. i did everything and i have not much money to buy a new one

Need help to fix imei issue

In the beginning, i can use my note 3 n9005 SFR as usual. But once i tried flashing rom, it showed as error (fail) because I chose BL instead of AP. And i tried to fix it by follow the instructions as Mr. Firasusman suggest me as said in the this link http://forum.xda-developers.com/showthread.php?t=2614787. It solved the problem my phone can now get into the normal screen but i found a new problem. I put in sim card but there is no network signal and I also lost imei when i checked in phone status. What should I do to fix this problem? Anyone, please help me. Thanks a lot.
IMEI = Unknown
S/N change
Baseband ok
wittaya73 said:
In the beginning, i can use my note 3 n9005 as usual. But once i tried flashing rom, it showed as error (fail) because I chose BL instead of AP. And i tried to fix it by follow the instructions as Mr. Firasusman suggest me. My phone can now get into the normal screen but i found a problem. I put in sim card but there is no network signal and I also lost imei when i checked in phone status. What should I do to fix this problem? Anyone, please help me. Thanks a lot.
Click to expand...
Click to collapse
Check whether EFS folder is backed up by flashed rom in sdcard. If your lucky you can use backup file to get imei number back. Few posts also suggest that flashing back stock rom also get back imei. I am not sure of it. Better back up efs to your pc.
wittaya73 said:
In the beginning, i can use my note 3 n9005 SFR as usual. But once i tried flashing rom, it showed as error (fail) because I chose BL instead of AP. And i tried to fix it by follow the instructions as Mr. Firasusman suggest me as said in the this link http://forum.xda-developers.com/showthread.php?t=2614787. It solved the problem my phone can now get into the normal screen but i found a new problem. I put in sim card but there is no network signal and I also lost imei when i checked in phone status. What should I do to fix this problem? Anyone, please help me. Thanks a lot.
Click to expand...
Click to collapse
Are you in 4.3 or 4.4.2?
Sent from my SM-N9005 using Tapatalk
imapk said:
Check whether EFS folder is backed up by flashed rom in sdcard. If your lucky you can use backup file to get imei number back. Few posts also suggest that flashing back stock rom also get back imei. I am not sure of it. Better back up efs to your pc.
Click to expand...
Click to collapse
What is EFS? After My first flashed firmware, I couldn't get into the normal screen. I even tried to flash back with stock rom via odin, but failed everytimes. I've tried to get back stock rom by using kies, but no luck; and stuck in Odin mode when I turn on my phone.
Then I found this link http://forum.xda-developers.com/showthread.php?t=2614787 which help me able to turn on my phone to normal. But new issue come.
No network connection, and IMEI unknow.
Please suggest.
wittaya73 said:
What is EFS? After My first flashed firmware, I couldn't get into the normal screen. I even tried to flash back with stock rom via odin, but failed everytimes. I've tried to get back stock rom by using kies, but no luck; and stuck in Odin mode when I turn on my phone.
Then I found this link http://forum.xda-developers.com/showthread.php?t=2614787 which help me able to turn on my phone to normal. But new issue come.
No network connection, and IMEI unknow.
Please suggest.
Click to expand...
Click to collapse
Flash THIS And don't mess with your phone any more.
radicalisto said:
Flash THIS And don't mess with your phone any more.
Click to expand...
Click to collapse
Thanks for your reply.
Already did, but nothing change; imei still unknown.
wittaya73 said:
What is EFS? After My first flashed firmware, I couldn't get into the normal screen. I even tried to flash back with stock rom via odin, but failed everytimes. I've tried to get back stock rom by using kies, but no luck; and stuck in Odin mode when I turn on my phone.
Then I found this link http://forum.xda-developers.com/showthread.php?t=2614787 which help me able to turn on my phone to normal. But new issue come.
No network connection, and IMEI unknow.
Please suggest.
Click to expand...
Click to collapse
EFS is a folder in phone's file system which saves your phone model, IMEI number and lot more details, Important folder. Flashing ROM the efs folder got corrupted causing the loss of imei number. Try "radicalisto" reply and update the issue.
wittaya73 said:
Thanks for your reply.
Already did, but nothing change; imei still unknown.
Click to expand...
Click to collapse
Flash Stock ROM via ODIN then apply the fix.zip
radicalisto said:
Flash Stock ROM via ODIN then apply the fix.zip
Click to expand...
Click to collapse
I did what you told above, but nothing change. IMEI still unknow. I also noticed that S/N has been changed too.
Please advise.
Still need help, please.
radicalisto said:
Flash THIS And don't mess with your phone any more.
Click to expand...
Click to collapse
This fix never worked? - hmm,you have lost your EFS/IMEI somehow then. Does *#06# bring up an IMEI? - if not you'll have to search around for how to fix your IMEI (It can be done)
still need help here.

[Q] Wi-fi not working on SGH-i337 S4 (ATT) after "unlock"

Having an issue with my father-in-law's SGH-I337 S4 (ATT). A few months ago my father-in-law had this S4 "unlocked" in Vietnam to use a local SIM and wifi/data hasn't worked since (calling works and I believe texts were ok too). New to Android but I gather they replaced the baseband or something (baseband was MJ9 while build was MJ6). Wifi toggle would not move at all, and data did not work. Also got a error message after trying to toggle the wifi.
I reflashed using the MK2 TAR (from http://forum.xda-developers.com/showthread.php?t=2621279). That seemed to get data working and fixed the error but wifi doesn't really work. After first boot/setup, when it asks for wifi network/password, wifi seems to work and shows available wifi networks like expected. I select my network and enter password, then it just hangs for a bit then goes back to the wifi enable screen, with the on/off toggle not green and the area below just says "turning on". Rebooting doesn't change anything. Can't turn on after that. After a hard reset, I am able to do the setup again, but same thing... works to enter password but then never again.
Seems like the options to try are to reflash a kernel or try a 4.3 ROM, but I don't want to take a few steps back after the reflash got the data working again (at least it can be used as a phone again). Also, my main goal is obviously just getting it working like normal, but I also don't want to lose any future flashing because I was rash and did something I shouldn't have.
Thanks for any help you can provide.
S4 SGH-I337 (AT&T) on mk2
morkman18 said:
Having an issue with my father-in-law's SGH-I337 S4 (ATT). A few months ago my father-in-law had this S4 "unlocked" in Vietnam to use a local SIM and wifi/data hasn't worked since (calling works and I believe texts were ok too). New to Android but I gather they replaced the baseband or something (baseband was MJ9 while build was MJ6). Wifi toggle would not move at all, and data did not work. Also got a error message after trying to toggle the wifi.
I reflashed using the MK2 TAR (from http://forum.xda-developers.com/showthread.php?t=2621279). That seemed to get data working and fixed the error but wifi doesn't really work. After first boot/setup, when it asks for wifi network/password, wifi seems to work and shows available wifi networks like expected. I select my network and enter password, then it just hangs for a bit then goes back to the wifi enable screen, with the on/off toggle not green and the area below just says "turning on". Rebooting doesn't change anything. Can't turn on after that. After a hard reset, I am able to do the setup again, but same thing... works to enter password but then never again.
Seems like the options to try are to reflash a kernel or try a 4.3 ROM, but I don't want to take a few steps back after the reflash got the data working again (at least it can be used as a phone again). Also, my main goal is obviously just getting it working like normal, but I also don't want to lose any future flashing because I was rash and did something I shouldn't have.
Thanks for any help you can provide.
S4 SGH-I337 (AT&T) on mk2
Click to expand...
Click to collapse
Bro I have same problem ,did u solve your problem ? plz replay.thanks.
Wifi issues
Mustafa_180 said:
Bro I have same problem ,did u solve your problem ? plz replay.thanks.
[After updating my SGH I337 my wifi wont turn on .
Click to expand...
Click to collapse
morkman18 said:
Having an issue with my father-in-law's SGH-I337 S4 (ATT). A few months ago my father-in-law had this S4 "unlocked" in Vietnam to use a local SIM and wifi/data hasn't worked since (calling works and I believe texts were ok too). New to Android but I gather they replaced the baseband or something (baseband was MJ9 while build was MJ6). Wifi toggle would not move at all, and data did not work. Also got a error message after trying to toggle the wifi.
I reflashed using the MK2 TAR (from http://forum.xda-developers.com/showthread.php?t=2621279). That seemed to get data working and fixed the error but wifi doesn't really work. After first boot/setup, when it asks for wifi network/password, wifi seems to work and shows available wifi networks like expected. I select my network and enter password, then it just hangs for a bit then goes back to the wifi enable screen, with the on/off toggle not green and the area below just says "turning on". Rebooting doesn't change anything. Can't turn on after that. After a hard reset, I am able to do the setup again, but same thing... works to enter password but then never again.
Seems like the options to try are to reflash a kernel or try a 4.3 ROM, but I don't want to take a few steps back after the reflash got the data working again (at least it can be used as a phone again). Also, my main goal is obviously just getting it working like normal, but I also don't want to lose any future flashing because I was rash and did something I shouldn't have.
Thanks for any help you can provide.
S4 SGH-I337 (AT&T) on mk2
Click to expand...
Click to collapse
Are you rooted ??? Almost every person that cant turn on wifi forgot to flash the kernel modules after install .. If you read the thread that you linked it says after flashing MK2 you will have a semi functioning phone ...aka NO WIFI... If you are not rooted you wont be able to proceed .. If you are rooted let me know and I can help you very easily with the fix
---------- Post added at 04:56 PM ---------- Previous post was at 04:56 PM ----------
whodinij said:
Mustafa_180 said:
Bro I have same problem ,did u solve your problem ? plz replay.thanks.
[After updating my SGH I337 my wifi wont turn on .
Click to expand...
Click to collapse
Are you rooted ??? Almost every person that cant turn on wifi forgot to flash the kernel modules after install .. If you read the thread that you linked it says after flashing MK2 you will have a semi functioning phone ...aka NO WIFI... If you are not rooted you wont be able to proceed .. If you are rooted let me know and I can help you very easily with the fix
Click to expand...
Click to collapse
check out my post, i found out how to fix that problem, it was the exact as yours.
http://forum.xda-developers.com/galaxy-s4-att/help/wifi-properly-nvm-damage-t2841529
If you have any questions you can PM me.
wifi issue
Starnel said:
check out my post, i found out how to fix that problem, it was the exact as yours.
http://forum.xda-developers.com/galaxy-s4-att/help/wifi-properly-nvm-damage-t2841529
If you have any questions you can PM me.
Click to expand...
Click to collapse
Can you please be more specific with the solution????
Code:
Are you rooted ??? Almost every person that cant turn on wifi forgot to flash the kernel modules after install .. If you read the thread that you linked it says after flashing MK2 you will have a semi functioning phone ...aka NO WIFI... If you are not rooted you wont be able to proceed .. If you are rooted let me know and [COLOR="Red"][SIZE="5"]I can help you very easily with the fix[/SIZE][/COLOR]
hello can you post it TIA
spirodave said:
Are you rooted ??? Almost every person that cant turn on wifi forgot to flash the kernel modules after install .. If you read the thread that you linked it says after flashing MK2 you will have a semi functioning phone ...aka NO WIFI... If you are not rooted you wont be able to proceed .. If you are rooted let me know and I can help you very easily with the fix
---------- Post added at 04:56 PM ---------- Previous post was at 04:56 PM ----------
whodinij said:
Are you rooted ??? Almost every person that cant turn on wifi forgot to flash the kernel modules after install .. If you read the thread that you linked it says after flashing MK2 you will have a semi functioning phone ...aka NO WIFI... If you are not rooted you wont be able to proceed .. If you are rooted let me know and I can help you very easily with the fix
Click to expand...
Click to collapse
Was this issue fixed? I am having the same problem. I have the SGH-I337 and the wifi won't turn on. I just rooted my phone. What do I do next?
Click to expand...
Click to collapse
Kelvinfe said:
spirodave said:
Are you rooted ??? Almost every person that cant turn on wifi forgot to flash the kernel modules after install .. If you read the thread that you linked it says after flashing MK2 you will have a semi functioning phone ...aka NO WIFI... If you are not rooted you wont be able to proceed .. If you are rooted let me know and I can help you very easily with the fix
---------- Post added at 04:56 PM ---------- Previous post was at 04:56 PM ----------
Was this issue fixed? I am having the same problem. I have the SGH-I337 and the wifi won't turn on. I just rooted my phone. What do I do next?
Click to expand...
Click to collapse
Your update to NB1 and use towel root method . I had the same problem when i owned this phone . Even after flashing the kerenel modules i still had no wifi . It will only be a problem for you if you are wanting to stay on the MK2 firmware . Just install Nb1 and after installing dont reboot system , reboot into download mode and flash the NB1 kernel modules and reboot . It may take up to 5 minutes to boot . I switched to the tmobile galaxy S4 and then S5 now because the locked bootloader is a pain in the a$$ and you cant install custom kernels as of last time i checked .
Click to expand...
Click to collapse
morkman18 said:
Having an issue with my father-in-law's SGH-I337 S4 (ATT). A few months ago my father-in-law had this S4 "unlocked" in Vietnam to use a local SIM and wifi/data hasn't worked since (calling works and I believe texts were ok too). New to Android but I gather they replaced the baseband or something (baseband was MJ9 while build was MJ6). Wifi toggle would not move at all, and data did not work. Also got a error message after trying to toggle the wifi.
I reflashed using the MK2 TAR (from http://forum.xda-developers.com/showthread.php?t=2621279). That seemed to get data working and fixed the error but wifi doesn't really work. After first boot/setup, when it asks for wifi network/password, wifi seems to work and shows available wifi networks like expected. I select my network and enter password, then it just hangs for a bit then goes back to the wifi enable screen, with the on/off toggle not green and the area below just says "turning on". Rebooting doesn't change anything. Can't turn on after that. After a hard reset, I am able to do the setup again, but same thing... works to enter password but then never again.
Seems like the options to try are to reflash a kernel or try a 4.3 ROM, but I don't want to take a few steps back after the reflash got the data working again (at least it can be used as a phone again). Also, my main goal is obviously just getting it working like normal, but I also don't want to lose any future flashing because I was rash and did something I shouldn't have.
Thanks for any help you can provide.
S4 SGH-I337 (AT&T) on mk2
Click to expand...
Click to collapse
Flash one of this mod https://www.androidfilehost.com/?w=files&flid=17227
Hiii....I am also having the same problem.My phone was unlocked by a guy and everything was working fine then.From next day the i could not turn on WiFi(It would go grayish for some time and then return to normal).I tried searching for it online and found the following soln
1)Reboot and check(Didn't work)
2)Factory Reset:After doing this it worked for that initial scanning but again was back to normal once wifi was switched off
3)Factory reset and installed root browser(my phone is rooted as i was able to install root explorer) and tried renaming the wpa-supplant config file
.This was worked for me for like 4 days.
After that again the problem is back and its even worse.It is immediately turning off as opposed to delay in previous case.When i tried to follow the same procedure the config files are not present.I could not on wifi even after factory reset even once
As i am a new around here detailed help would be appreciated;
My Device Features:
1)Andriod:4.4.2,SGH I337
2)Baseband:I337UCUFNC1
3)kernel Version:3.4.0-1125940
4)Build No:KOT49H.I337UCUFNC1
spirodave said:
Kelvinfe said:
Your update to NB1 and use towel root method . I had the same problem when i owned this phone . Even after flashing the kerenel modules i still had no wifi . It will only be a problem for you if you are wanting to stay on the MK2 firmware . Just install Nb1 and after installing dont reboot system , reboot into download mode and flash the NB1 kernel modules and reboot . It may take up to 5 minutes to boot . I switched to the tmobile galaxy S4 and then S5 now because the locked bootloader is a pain in the a$$ and you cant install custom kernels as of last time i checked .
Click to expand...
Click to collapse
So how do I do this? I don't know how to update to NB1 using towel root method. Can you give me step by step instructions? Thanks
Click to expand...
Click to collapse
Kelvinfe said:
spirodave said:
So how do I do this? I don't know how to update to NB1 using towel root method. Can you give me step by step instructions? Thanks
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2872013
Make sure you thank jd1639 for this
Click to expand...
Click to collapse
jdisco1 said:
Kelvinfe said:
http://forum.xda-developers.com/showthread.php?t=2872013
Make sure you thank jd1639 for this
Click to expand...
Click to collapse
I still don't follow. I don't know the lingo. I see abbreviations that I don't understand such as TWRP. Thanks anyway though.
Click to expand...
Click to collapse
Kelvinfe said:
jdisco1 said:
I still don't follow. I don't know the lingo. I see abbreviations that I don't understand such as TWRP. Thanks anyway though.
Click to expand...
Click to collapse
I would flash the nb1 tar file in Odin and see if that fixes the problem. It'll return your device to stock, the sim unlock will remain.
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Kelvinfe said:
jdisco1 said:
I still don't follow. I don't know the lingo. I see abbreviations that I don't understand such as TWRP. Thanks anyway though.
Click to expand...
Click to collapse
The abbreviations are the different types of recovery software that are generally used. TWRP = Team Win Recovery Project.
Plase take this in the spirit its intended, but if you can't use Towelroot, then you have some reading to do before you plug in anything. Trust me. Knowing all the steps you're going to take beforehand is going to save you a TON of trouble, you'll never be stuck with a brick, and you'll possibly save money.
90% of your answers can be found within the first page of the General board.
Click to expand...
Click to collapse
moiramd said:
Flash one of this mod https://www.androidfilehost.com/?w=files&flid=17227
Click to expand...
Click to collapse
sorry to revive an old tread, but this modules include the camera module?
Starnel said:
check out my post, i found out how to fix that problem, it was the exact as yours.
http://forum.xda-developers.com/galaxy-s4-att/help/wifi-properly-nvm-damage-t2841529
If you have any questions you can PM me.
Click to expand...
Click to collapse
i have the same problem on my S4 SGH-I337 (AT&T) but the wifi is connected but not working and data also connects but no internet access...it's on custom rom and not rooted an this happened just suddenly
can anyone help please?
This works for me!!!!!!! you are a genius. But I had to install android terminal, su - to switch to root and chmod 777 efs.
Thank you!!!!
Wifi is not turning on after installing cm12
I am using samsung galaxy tab 2 with CM12 . After installing CM12 i saw that my wifi was not turning on . Whenever i tried turning it on It showed 'error' message . What should i do and how do i fix it ? Help.

I337 AT&T S4 - Return to Stock (No WiFi)

I recently bit off more than I could chew with my S4 (I337). I had 4.4.2 KitKat on it and wanted to root it to add teathering. I decided thought there was no root for 4.4.2 so I thought I would try downgrading to 4.3 then root. This seemed best because I didn't like the way the SD card is handled in 4.4.2 and some of my apps (like ftp server) have stopped working.
When I got the phone back up from flashing with Odin it says it has version 4.3. My WiFi will not turn on. If I slide the switch to on it slides right back to off and the phone tells me that an operation was block (can't remember the full verbage. I have installed and attempted to install many things on my phone. I have used recovery mode / Odin3 and Kies (Kies doesn't allow much).
At this point I just would like to get my phone back to 4.4.2 with the WiFi working. Then I can restore my backup and be back to square one with a lesson learned.
I have an I337 that currently thinks it has version 4.3 on it. The baseband version is I337UCUFNC1 currently. The build number is JSS15J.I337UCUEMK2.
If anyone can help I would greatly appreciate it. I have read and tried many things over a two day period and finally decided to ask for help.
Had this issue before on my Bell Canada S4, but don't recall exact way to fix it.
Think the solution was to find an older (might be newer) stock. I think I used a different version like the Telus Canada version as well and it ended up working. Then you update through kies after.
jbrudda said:
I recently bit off more than I could chew with my S4 (I337). I had 4.4.2 KitKat on it and wanted to root it to add teathering. I decided thought there was no root for 4.4.2 so I thought I would try downgrading to 4.3 then root. This seemed best because I didn't like the way the SD card is handled in 4.4.2 and some of my apps (like ftp server) have stopped working.
When I got the phone back up from flashing with Odin it says it has version 4.3. My WiFi will not turn on. If I slide the switch to on it slides right back to off and the phone tells me that an operation was block (can't remember the full verbage. I have installed and attempted to install many things on my phone. I have used recovery mode / Odin3 and Kies (Kies doesn't allow much).
At this point I just would like to get my phone back to 4.4.2 with the WiFi working. Then I can restore my backup and be back to square one with a lesson learned.
I have an I337 that currently thinks it has version 4.3 on it. The baseband version is I337UCUFNC1 currently. The build number is JSS15J.I337UCUEMK2.
If anyone can help I would greatly appreciate it. I have read and tried many things over a two day period and finally decided to ask for help.
Click to expand...
Click to collapse
Root, install safestrap then flash this ROM and you will be good to go: http://forum.xda-developers.com/showpost.php?p=52167774&postcount=3
Thanks
muniz_ri said:
Root, install safestrap then flash this ROM and you will be good to go: http://forum.xda-developers.com/showpost.php?p=52167774&postcount=3
Click to expand...
Click to collapse
Quite a few steps in those threads but I got it working again. I really appreciate all the help/advice given. Now to decide if I want to remove the safestrap screen on boot. Again Thanks.
Same problem,need help plz
Hi guys,
I have the same problem as jbrudda.i wiped everything using Odin3_v3.09 and AP_I337UCUEMK2_1921628_REV06_user_low_ship_MULTI_CERT.tar . and now my wifi is not working. when i try to turn it on a security message pop up (the device has detected an application attempting to perform actions that are not permitted these actions have been blocked)and ask me to reboot, then it does a factory reset on its own. but the problem is still there no wifi. my baseband is diffrent than jbrudda's. mine is I337UCUAMDB. can someone plz help. thank you
karim8888 said:
Hi guys,
I have the same problem as jbrudda.i wiped everything using Odin3_v3.09 and AP_I337UCUEMK2_1921628_REV06_user_low_ship_MULTI_CERT.tar . and now my wifi is not working. when i try to turn it on a security message pop up (the device has detected an application attempting to perform actions that are not permitted these actions have been blocked)and ask me to reboot, then it does a factory reset on its own. but the problem is still there no wifi. my baseband is diffrent than jbrudda's. mine is I337UCUAMDB. can someone plz help. thank you
Click to expand...
Click to collapse
Wifi does not work because of the modem/kernel mismatch, i.e. MDB modem and MK2 kernel. Not sure what your goal was when you began flashing your phone but since you fortunately did not flash teh MK2 bootloader you are still able to locate the MDB full odin tar and flash back to stock which will resolve your issue.
muniz_ri said:
Wifi does not work because of the modem/kernel mismatch, i.e. MDB modem and MK2 kernel. Not sure what your goal was when you began flashing your phone but since you fortunately did not flash teh MK2 bootloader you are still able to locate the MDB full odin tar and flash back to stock which will resolve your issue.
Click to expand...
Click to collapse
I did Root it with saferoot and safestarp.the wifi didnt work so i had to find a script here on xda and i run it throughout universal init.d . i didnt like the way my phone was running . so i decided to unroot it . so you think im using the wrong TAR file ???
karim8888 said:
I did Root it with saferoot and safestarp.the wifi didnt work so i had to find a script here on xda and i run it throughout universal init.d . i didnt like the way my phone was running . so i decided to unroot it . so you think im using the wrong TAR file ???
Click to expand...
Click to collapse
It depends on what you are trying to accomplish. Are you trying to upgrade to MK2 or higher while maintaining your unlocked MDB bootloader?
muniz_ri said:
It depends on what you are trying to accomplish. Are you trying to upgrade to MK2 or higher while maintaining your unlocked MDB bootloader?
Click to expand...
Click to collapse
I'm just trying to take it back to the why it was. and upgrade to kitkat. i have now build number JSS15J.I337UCUEMK2 baseband : I337UCUAMDB
what do you think i should do?? I appreciate your help.
karim8888 said:
I'm just trying to take it back to the why it was. and upgrade to kitkat. i have now build number JSS15J.I337UCUEMK2 baseband : I337UCUAMDB
what do you think i should do?? I appreciate your help.
Click to expand...
Click to collapse
If you don't care about losing your MDB unlocked bootloader you can get to the latest kitkat firmware by flashing the NB1 full odin tar from here:
http://forum.xda-developers.com/showthread.php?t=2674223, then once flashing is complete go to settings/more/about phone/software update then take the ota update to NC1 which is the latest kitkat version for our phone.
But what I would do is keep your unlocked MDB bootloader and since you already flashed the MK2 AP file you can get your phone running well again by flashing the MK2 modem: https://mega.co.nz/#!pwESna5I!YK7EKG37xXIG1ReB-Z-mfSMoXNkXQ9t2EdMK9ofgJKg
From there, there are still a number of options available to get to kitkat which I won't get into.
muniz_ri said:
If you don't care about losing your MDB unlocked bootloader you can get to the latest kitkat firmware by flashing the NB1 full odin tar from here:
http://forum.xda-developers.com/showthread.php?t=2674223, then once flashing is complete go to settings/more/about phone/software update then take the ota update to NC1 which is the latest kitkat version for our phone.
But what I would do is keep your unlocked MDB bootloader and since you already flashed the MK2 AP file you can get your phone running well again by flashing the MK2 modem: https://mega.co.nz/#!pwESna5I!YK7EKG37xXIG1ReB-Z-mfSMoXNkXQ9t2EdMK9ofgJKg
From there, there are still a number of options available to get to kitkat which I won't get into.
Click to expand...
Click to collapse
I will try this steps and let you know.thanks a lot.
It worked "muniz_ri". Thanks a lot for your help, I really appreciate it. :laugh::good:
karim8888 said:
It worked "muniz_ri". Thanks a lot for your help, I really appreciate it. :laugh::good:
Click to expand...
Click to collapse
Hey guys.
I lost al sounds on my phone now.Wifi is running , I thought the fix worked but the sound is out now. any suggestions???
Thank you.
jbrudda said:
I recently bit off more than I could chew with my S4 (I337). I had 4.4.2 KitKat on it and wanted to root it to add teathering. I decided thought there was no root for 4.4.2 so I thought I would try downgrading to 4.3 then root. This seemed best because I didn't like the way the SD card is handled in 4.4.2 and some of my apps (like ftp server) have stopped working.
When I got the phone back up from flashing with Odin it says it has version 4.3. My WiFi will not turn on. If I slide the switch to on it slides right back to off and the phone tells me that an operation was block (can't remember the full verbage. I have installed and attempted to install many things on my phone. I have used recovery mode / Odin3 and Kies (Kies doesn't allow much).
At this point I just would like to get my phone back to 4.4.2 with the WiFi working. Then I can restore my backup and be back to square one with a lesson learned.
I have an I337 that currently thinks it has version 4.3 on it. The baseband version is I337UCUFNC1 currently. The build number is JSS15J.I337UCUEMK2.
If anyone can help I would greatly appreciate it. I have read and tried many things over a two day period and finally decided to ask for help.
Click to expand...
Click to collapse
I told you not to drink and root.
jbrudda said:
Quite a few steps in those threads but I got it working again. I really appreciate all the help/advice given. Now to decide if I want to remove the safestrap screen on boot. Again Thanks.
Click to expand...
Click to collapse
excited to give this a try. rooted with the downgrade method a couple months ago but left with a non-wifi device. my only issue is that the thread says it's for I337UCUFNC1 and our devices are on jss15j.i337ucuemk2. will this fix still work? I've heard on other threads on the subject that the modem kernel doesn't match up with the flashed rom or build number or something.
bux
karim8888 said:
Hi guys,
I have the same problem as jbrudda.i wiped everything using Odin3_v3.09 and AP_I337UCUEMK2_1921628_REV06_user_low_ship_MULTI_CERT.tar . and now my wifi is not working. when i try to turn it on a security message pop up (the device has detected an application attempting to perform actions that are not permitted these actions have been blocked)and ask me to reboot, then it does a factory reset on its own. but the problem is still there no wifi. my baseband is diffrent than jbrudda's. mine is I337UCUAMDB. can someone plz help. thank you
Click to expand...
Click to collapse
Do you already fix it??? cause i have the same problem
Same question, different thread!
Not even an hour ago did I answer the same question in a different thread: How do I get WiFi working on my S4?
Well here you go.
My original answer: http://forum.xda-developers.com/gal...-4-4-2-nb1-t2850878/post54978150#post54978150
The problem is, in order to get WiFi working, you need to install the NB1 modules, but to do that, you need to install Safestrap. However, you can not install Safestrap because the app keeps closing on you. There is a simple fix to this, which I will explain later. For now, just read this WHOLE post BEFORE you do anything, and keep in mind that I am NOT held liable if you mess up your phone. Use this at your own risk.
1.) Root your phone
If you're already rooted with something like SuperSU or Superuser, skip this. If not, read ahead. Download and install the Towelroot APK file attached to this post, open it, and click 'make it ra1n'. If your phone didn't reboot, now you have root (they need to trademark that). Now, down below, I also included the APK for SuperSU. Download and install it. Now open it. When you open it, let it install the 'Normal' way, not via the 'TWRP/CWM' way. Also, when it asks you to disable KNOX, say yes, wait a couple of minutes (it will still be loading) and reboot your phone. Open up SuperSU again, click 'Yes' to disable KNOX again, and now you have a good base to start from.
2.) Install Safestrap AFTER fixing the error
The error your are getting is easily fixed. Go to the Play Store and install 'SELinux Mode Changer'. Open it, grant it root access, and change the mode to 'Permissive'. Now, open up Safestrap again (you mentioned you already installed it), and it shouldn't force close. Click 'Install', and if the 'Reboot to Recovery' option below is not grayed out after that then it worked.
3.) Download and install the NB1 modules
On your phone, download the included NB1 modules ZIP file I attached for you, and once that is done you need to reboot. After the Galaxy S4 logo, you'll see a screen that says 'SAFESTRAP: DISABLED' and there will be a little robot. TIP: To enter Safestrap, press the menu button (physical, hardware key) under 'Recovery' at that screen. To continue to Android, press the back key (again, physical) under the 'System' tab. For now, press the menu button under 'Recovery'. Now, click 'Install' which should be in red, click 'Add zips', and navigate to your Downloads folder. Now click on the NB1 modules ZIP you just downloaded. Swipe to install, and reboot. This time, hit the back key under 'System'.
All done!
Now, Android should (and will) boot up, and you'll have working WiFi! If, for some odd reason, you don't have WiFi- do NOT panic! Just search around for the MF3 modules and flash those! All is good, all is good. A lot of this guide was taken from my post about my personal method of SIM unlocking the AT&T Galaxy S4 without the dialer codes or an AT&T SIM. It was just modified a little to work for you.
Remember, hit thanks!
Click to expand...
Click to collapse
Those are my exact words. Also, the attached files (NB1 modules, SuperSU, Towelroot, etc.) can be found attached to my post in the link above. Have a good night, and best of luck! :good::good::good:
Had the Wifi Not Working - Fixed
muniz_ri said:
If you don't care about losing your MDB unlocked bootloader you can get to the latest kitkat firmware by flashing the NB1 full odin tar from here:
http://forum.xda-developers.com/showthread.php?t=2674223, then once flashing is complete go to settings/more/about phone/software update then take the ota update to NC1 which is the latest kitkat version for our phone.
But what I would do is keep your unlocked MDB bootloader and since you already flashed the MK2 AP file you can get your phone running well again by flashing the MK2 modem: https://mega.co.nz/#!pwESna5I!YK7EKG37xXIG1ReB-Z-mfSMoXNkXQ9t2EdMK9ofgJKg
From there, there are still a number of options available to get to kitkat which I won't get into.
Click to expand...
Click to collapse
I just flashed I337MK2StockModem.tar.md5 and now it works!! I'm on the MK2 and rooted with saferoot and safestrap recovery 3.72
iqcomputers said:
I just flashed I337MK2StockModem.tar.md5 and now it works!! I'm on the MK2 and rooted with saferoot and safestrap recovery 3.72
Click to expand...
Click to collapse
See the thread I started with a similar problem.
http://forum.xda-developers.com/galaxy-s4-att/help/rogers-samsung-s4-4-2-2-i337m-wifi-t3256535
Would I be able to use this fix?

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