Develop Bugs

8.4 Tab S Forgets WiFi Networks On Reboot

I'm on stock, rooted odex. I believe the issue happened after I rooted. On boot, it forgets all previously connected WiFi networks. The only mods I've flashed was the 4-way boot (which didn't work since I have CWM and not TWRP). I've tried deleting the dhcp files in the dhcp folder and the wpa files in the etc/wifi folder. Neither worked.
Anyone else having this issue?
Edit: Factory wipe didn't rectify the issue. Guess I'll ODIN back to stock. Hopefully this is a hardware issue.

Strange.....mine works fine, rebooted numerous times.

kenkiller said:
Strange.....mine works fine, rebooted numerous times.
Click to expand...
Click to collapse
Figured out the issue. I mistakenly flashed the T800 autoroot instead of the T700 autoroot.

Hi
I am stepping in on this thread, because I encounter this issue.
I just rooted by Galaxy Tab S 8.4 (LTE) - T705 and I followed this site http://theunlockr.com/2014/08/09/how-to-root-the-samsung-galaxy-tab-s-8-4-lte/, used as instructed CF_AutoRoot_Port_T700_BeansTown106.tar with Odin3 v1.85 .
- when rebooted the wifi forgets the password, (as long as you dont reboot the wifi is okay, and i can connect to other network and connect back to the original wifi.)
Do anybody knows how to fix this issue?

lee.n said:
Hi
I am stepping in on this thread, because I encounter this issue.
I just rooted by Galaxy Tab S 8.4 (LTE) - T705 and I followed this site http://theunlockr.com/2014/08/09/how-to-root-the-samsung-galaxy-tab-s-8-4-lte/, used as instructed CF_AutoRoot_Port_T700_BeansTown106.tar with Odin3 v1.85 .
- when rebooted the wifi forgets the password, (as long as you dont reboot the wifi is okay, and i can connect to other network and connect back to the original wifi.)
Do anybody knows how to fix this issue?
Click to expand...
Click to collapse
I think you have to change some sort of file to something to make it remeber it. I cant remeber what the fix was but it was somewhere in the cfautoroot fourm.

lee.n said:
Hi
I am stepping in on this thread, because I encounter this issue.
I just rooted by Galaxy Tab S 8.4 (LTE) - T705 and I followed this site http://theunlockr.com/2014/08/09/how-to-root-the-samsung-galaxy-tab-s-8-4-lte/, used as instructed CF_AutoRoot_Port_T700_BeansTown106.tar with Odin3 v1.85 .
- when rebooted the wifi forgets the password, (as long as you dont reboot the wifi is okay, and i can connect to other network and connect back to the original wifi.)
Do anybody knows how to fix this issue?
Click to expand...
Click to collapse
HI,
Consider also using Skyhigh Kernel, it fixes your issue.
http://forum.xda-developers.com/galaxy-tab-s/orig-development/kernel-skyhigh-kernel-t2870143
Best Regards
J

My nonrooted Tab S forgets WiFi on reboot and when I switch WiFi off and then on.
I found that this probably is a KitKat bug (http://forum.xda-developers.com/showthread.php?t=2685519)

If you are rooted then this is what fixed it for me.
http://zidroid.com/how-to-fix-wi-fi-issue-on-android-4-4-2-kitkat/

tovarish said:
If you are rooted then this is what fixed it for me.
http://zidroid.com/how-to-fix-wi-fi-issue-on-android-4-4-2-kitkat/
Click to expand...
Click to collapse
Unfortunately I have no root, so I flashed the newest firmware (T705XXU1ANH1 – XEH from France) and it fixed Wi-Fi

So, I using mine tab with and 6 on the latest image from Brazil.
It is rooted and with TWRP.
It doesn't save wifi networks. If I turn wifi on and of it looses everything.
Just to be clear, it had this problem before I installed TWRP. It took me quite some time to notice the problem so I don't know if it is related with the root method.
I even flashed a custom kernel, but still no luck.
Does any one know of a solution for this issue on Android 6? Stok?
Thanks

Maheidem said:
So, I using mine tab with and 6 on the latest image from Brazil.
It is rooted and with TWRP.
It doesn't save wifi networks. If I turn wifi on and of it looses everything.
Just to be clear, it had this problem before I installed TWRP. It took me quite some time to notice the problem so I don't know if it is related with the root method.
I even flashed a custom kernel, but still no luck.
Does any one know of a solution for this issue on Android 6? Stok?
Thanks
Click to expand...
Click to collapse
try to flash a diffedent rom. i personally never had this issue but maybe a new rom may help.

WiFi issue after ota tab 3 7in SM-T210

Hi all i recently bought a no fault customer returned tab 3 7in SM-T210, Today I received my tab 3 and after the first boot I was offered an update, Build number KOT49H.T210XXBOA3, dated 22 jan 2015 at 110mb.
After the update had finished I was unable to connect to my WiFi, it would say connected but the settings app would freeze sometimes with the message that settings is not responding, if I do manage to get out of the settings I am unable to use the internet as all apps say no connection, even though the WiFi icon is showing as connected. I have also found that changing the screen off time to 1 minute cause's the device to soft reboot ( No Samsung galaxy tab 3 screen / bootloader )
I have tried doing factory reset but that didn't help,
Could flashing the full 828mb stock ROM via Odin possibly fix these issues?
And if I do use Odin to flash stock my warranty should remain?
Sorry for the long winded post, and thanks in advance for any advice given
Sent from my moto g using XDA Free mobile app

plewis1981 said:
Hi all i recently bought a no fault customer returned tab 3 7in SM-T210, Today I received my tab 3 and after the first boot I was offered an update, Build number KOT49H.T210XXBOA3, dated 22 jan 2015 at 110mb.
After the update had finished I was unable to connect to my WiFi, it would say connected but the settings app would freeze sometimes with the message that settings is not responding, if I do manage to get out of the settings I am unable to use the internet as all apps say no connection, even though the WiFi icon is showing as connected. I have also found that changing the screen off time to 1 minute cause's the device to soft reboot ( No Samsung galaxy tab 3 screen / bootloader )
I have tried doing factory reset but that didn't help,
Could flashing the full 828mb stock ROM via Odin possibly fix these issues?
And if I do use Odin to flash stock my warranty should remain?
Sorry for the long winded post, and thanks in advance for any advice given
Sent from my moto g using XDA Free mobile app
Click to expand...
Click to collapse
Why is t210 so many issue? seriously!?
If one thing i need to clarify that doing any custom modification on the device will spoil your warranty. However if you did firmware stuff from kies will not remove your warranty. I would choose to flash into new firmware by using odin. But if your case you can do a factory reset then followed by kies and see if it is working. If it is not, download stock firmware from the net and flash it with odin.

thanks @Jacker31 for the response, i know about voiding warranty there is no custom software on it YET lol, only just got it out of the box, i am new to Samsung devices so i will do some research into kies, just don't want to void my warranty trying to sort it out.

plewis1981 said:
thanks for the response, there is no custom software yet only just got it out of the box, i am new to samsung devices so i will do some research into kies
Click to expand...
Click to collapse
Kies are easy and ready to use after its installation.
check out this link for more info:
http://forum.xda-developers.com/showthread.php?t=2261153

I don't know if it's the same problem with my wife's tab t210. when you turn on the wifi it connects but around many seconds, the wifi icon is gone. and in settings the wifi freeze. i've done rebooting, restore factory settings but it didn't fix the problem. but when i try it to connect via my phone tethering it connects and the wifi icon stays. i check the tethering settings it was put on wpa2, but on my router it was just on wpa. So i change it to wpa2 and the problem on my wife's tab is gone.

bukog25 said:
I don't know if it's the same problem with my wife's tab t210. when you turn on the wifi it connects but around many seconds, the wifi icon is gone. and in settings the wifi freeze. i've done rebooting, restore factory settings but it didn't fix the problem. but when i try it to connect via my phone tethering it connects and the wifi icon stays. i check the tethering settings it was put on wpa2, but on my router it was just on wpa. So i change it to wpa2 and the problem on my wife's tab is gone.
Click to expand...
Click to collapse
sounds like ur device does not support wpa correctly.

Hi guys, so I installed kies3 but when I click the firmware upgrade button I get this message 'SM-T210' dose not support initializing. even though i had USB debugging selected. I also tried while the device was unplugged by entering the model and serial numbers but got the same response.
If I flash a stock firmware by Odin will the device log it on the flash counter? as it came with a 12 month warranty and i will send it back if i cannot fix it myself.
Sent from my moto g using XDA Free mobile app

plewis1981 said:
Hi guys, so I installed kies3 but when I click the firmware upgrade button I get this message 'SM-T210' dose not support initializing. even though i had USB debugging selected. I also tried while the device was unplugged by entering the model and serial numbers but got the same response.
If I flash a stock firmware by Odin will the device log it on the flash counter? as it came with a 12 month warranty and i will send it back if i cannot fix it myself.
Sent from my moto g using XDA Free mobile app
Click to expand...
Click to collapse
You should send it back because of the warranty, anything could happen (I meant for the warranty) if we do something.

[Q] OTA Weirdness - Tab Pro 10.1

Got a notice of an OTA last night. Figured it was for Lollipop so told it to proceed. Once the tablet rebooted the WiFi radio was disabled. Looked in settings which showed that WiFi was on, but no radio. Went online an saw that Samsung hasn't sent out the Lollipop update for the 10.1.
Question 1 - how do I restore my tablet since I can't get WiFi turned on?
Question 2 - where did this weird OTA come from?
Thanks for any help you can give.
Mike

mikethevol said:
Got a notice of an OTA last night. Figured it was for Lollipop so told it to proceed. Once the tablet rebooted the WiFi radio was disabled. Looked in settings which showed that WiFi was on, but no radio. Went online an saw that Samsung hasn't sent out the Lollipop update for the 10.1.
Question 1 - how do I restore my tablet since I can't get WiFi turned on?
Question 2 - where did this weird OTA come from?
Thanks for any help you can give.
Mike
Click to expand...
Click to collapse
Firmware for SM-T520 http://www.sammobile.com/firmwares/database/SM-T520/ select your country and download.
Instructions
Extract (unzip) the firmware file
Download Odin v3.10.6
Extract Odin ZIP file
Open Odin v.3.10.6
Reboot Phone in Download Mode (press and hold Home + Power + Volume Down buttons)
Connect phone and wait until you get a blue sign in Odin
Add the firmware file to AP / PDA
Make sure re-partition is NOT ticked
Click the start button, sit back and wait few minutes

Others having same issue
Thought I'd post this as info. Checked over at Android Central and several people appear to be having the same issue. Looks like bad firmware from Samsung. Bad build number is: KOT49H.T520UEUAOD1. Wiping and factory refresh may help temporarily, but eventually the wifi radio will be disabled. I'm going to wait for Samsung to get their act together and flash a fresh build when it's released.
Thanks for the help.
Mike

My 10.1 Tab Pro was updated too but wifi is working fine. I'm not rooted though. Same build number that you mentioned.
Sent from my SM-T520 using XDA Premium HD app

Wifi Issue as well
I had the same update come across last night and now I can't connect to wi-fi to save my life. Really pissed off. Done 2 factory resets already, reset my modem at home, turns out it happens everywhere and not just at home. Wifi says it's on but doesn't pick up any networks in my area and won't connect to the 1 that is already known on my tab. PLEASE HELP

Got the update last week. Wifi is fine but now daily I get a random reboot. Never had any problems before. Thanks Sammy!

Bad Firmware
mikethevol said:
Thought I'd post this as info. Checked over at Android Central and several people appear to be having the same issue. Looks like bad firmware from Samsung. Bad build number is: KOT49H.T520UEUAOD1. Wiping and factory refresh may help temporarily, but eventually the wifi radio will be disabled. I'm going to wait for Samsung to get their act together and flash a fresh build when it's released.
Thanks for the help.
Mike
Click to expand...
Click to collapse
I have the same issue with the build described.
Does one know how to correct this firmware update if the tablet is unable to connect to the internet?

AndroidSMT520 said:
I have the same issue with the build described.
Does one know how to correct this firmware update if the tablet is unable to connect to the internet?
Click to expand...
Click to collapse
You can download an earlier firmware from sammobile.com. If you are in the US, use the firmware for cellular South and make sure it's a 4.4.2 that you are downloading. After you download it, you can flash it with Odin. There are several threads here on xda that describe this process. If you still need further help, post again.

TabPro 10.1 SM-T520, v4.4.2 Build KOT49H.T520UEUAOD1 No wifi after update
Boy am I glad to find you guys with the same problem as I have. Couple of days ago I saw an update message and decited to go for it. Well, as all of you know, wifi stops working. Factory resets gets it working again but once everything is restored it stops working again! This is quite frustrating and I hope Samsung is working on a fix right now. I haven't been on XDA for a while and only rooted phones before. So how is the rooting/mod scene for tablets. Any good Custom Roms out there we can use until/when this is resolved? I'm good with directions and done some custom roms on my phones before. Let me know what's the good ROMS out there are...the bloatfree version is a welcome even without KNOX, I don't really use it.

k8108 said:
You can download an earlier firmware from sammobile.com. If you are in the US, use the firmware for cellular South and make sure it's a 4.4.2 that you are downloading. After you download it, you can flash it with Odin. There are several threads here on xda that describe this process. If you still need further help, post again.
Click to expand...
Click to collapse
Thanks for your feedback.
I had to use the firmware from November 2014 to get it to work and restore my wi-fi.
Again thanks

KOT49H.T520UEUAOD1 is the problem
Well I figure this particular firmware has a problem. Because even after factory reset, wifi works once and goes back to not working. So the best solution is to get an earlier version. I went back to Sep 15, 2014 version and it works well. Took forever to download from sammobile though. So if you need to flash to a previous version that works. I have post a link to the firmware I have on my OneDrive that got it working again, hopefully it will be faster for you to get your tablet working again. Here is a link. This is for the US Tab Pro 10.1 SM-T520.
T520UEUANI1_T520XARANI1_XAR.zip
https://onedrive.live.com/redir?resid=a628a551d04c1283!721&authkey=!ALKYL7IcLyekSgg&ithint=file,zip

thank you for those who warned about the wifi problems this OTA introduced. I'm just going to keep ignoring the tablets request to update. I thought i got a great deal on this tablet when i got a refurbished one for under $300 several months ago... but samsungs lack of support for this tablet is astonishing.

nxp3 said:
Boy am I glad to find you guys with the same problem as I have. Couple of days ago I saw an update message and decited to go for it. Well, as all of you know, wifi stops working. Factory resets gets it working again but once everything is restored it stops working again! This is quite frustrating and I hope Samsung is working on a fix right now. I haven't been on XDA for a while and only rooted phones before. So how is the rooting/mod scene for tablets. Any good Custom Roms out there we can use until/when this is resolved? I'm good with directions and done some custom roms on my phones before. Let me know what's the good ROMS out there are...the bloatfree version is a welcome even without KNOX, I don't really use it.
Click to expand...
Click to collapse
i'm being prompted to install a 83.54 mb update, i dont know if its the bad OTA you list or if its a new one. Anyone have any idea what it is?

Wi-Fi not working stock tm700

Having issues with my wife's tab S 8.4 (Wi-Fi only - tm-700 16gb). It will not turn on Wi-Fi at all suddenly - it just says "turning on Wi-Fi " indefinitely. Bone stock running lollipop. Never rooted. Any ideas?

All i can suggest is flashing the latest firmware

ashyx said:
All i can suggest is flashing the latest firmware
Click to expand...
Click to collapse
It's already on the latest and she did a factory reset - still not working. Unless I find a solution before I get home from work I'm gonna contact Samsung (it's less than a year old and I have the receipt to prove it).

Flashing the firmware is not the same as doing a factory reset.
Like I say I would download and flash the latest firmware regardless of whether you are already on that firmware or not.

Android 10 broke my phone's Mobile Hotspot Functionality.

Samsung Galaxy A50 (SAM-A505FN)
Android 10
One UI 2.0
Hello,
I updated my phone last night with the above updates and for some reason, Windows 10 now no longer sees my phone's hotspot.
Other devices in my home connect to the phone just fine. No updates were applied to my PC before or after the phone update.
I've reset everything on the phone multiple times. The network isn't hidden. Encryption doesn't make a difference. Changing the band doesn't do anything either.
The phone connects to the internet fine via USB and Bluetooth.
Does anyone know what could have happened and if there is a way to solve this issue?
Thank you.

mrelba said:
Samsung Galaxy A50 (SAM-A505FN)
Android 10
One UI 2.0
Hello,
I updated my phone last night with the above updates and for some reason, Windows 10 now no longer sees my phone's hotspot.
Other devices in my home connect to the phone just fine. No updates were applied to my PC before or after the phone update.
I've reset everything on the phone multiple times. The network isn't hidden. Encryption doesn't make a difference. Changing the band doesn't do anything either.
The phone connects to the internet fine via USB and Bluetooth.
Does anyone know what could have happened and if there is a way to solve this issue?
Thank you.
Click to expand...
Click to collapse
After updating the device, did you boot into recovery mode and select the "wipe cache partition"?
Sent from my SM-S767VL using Tapatalk

I already tried this. No change.

mrelba said:
I already tried this. No change.
Click to expand...
Click to collapse
Well, basically, after applying stock updates, if factory resetting and wiping cache in recovery isn't fixing the issue, about the only other option is to flash back to your previous stock firmware.
But, your issue might be caused by some other app/apps that you have installed. To test that theory, try booting into "safe mode", if the issue does not occur while in safe mode, that means the issue is caused by something that you installed.
Or, this issue may be caused by some other setting in your device settings that needs to be changed.
Did you update via OTA or did you flash the updated firmware via PC/flashtool?
Sent from my SM-S767VL using Tapatalk

No, I updated over my carriers update roll out. No flashing or anything. Just doing things legitimately.

mrelba said:
No, I updated over my carriers update roll out. No flashing or anything. Just doing things legitimately.
Click to expand...
Click to collapse
Try downloading that exact update version and then flash it via PC. It usually does a better job than updating directly over the air.
Sent from my SM-S767VL using Tapatalk

Hi if you have any problems try to reflash to previous version via ODIN