wifi stopped working - MTCB Android Head Units Q&A

i have an xtrons hu with kitkat flashed on it. i upgraded to the new lollipop rom and 2 weeks later wifi stopped working. i downgraded back to kitkat today but the wifi still doesn't work. does anyone have any ideas of things i can try to fix it? maybe flashing a mcu or is it likely that the wifi hardware has failed?

I've got the same problem - wifi is dead. An external Wifi adapter doesn't work either although the USB port appears to be OK with memory keys.

It seems to be the same hardware problem caused by a defective inductor very sensible to overheating with the ext USB, look for the solution in my thread,

iateshaggy said:
i have an xtrons hu with kitkat flashed on it. i upgraded to the new lollipop rom and 2 weeks later wifi stopped working. i downgraded back to kitkat today but the wifi still doesn't work. does anyone have any ideas of things i can try to fix it? maybe flashing a mcu or is it likely that the wifi hardware has failed?
Click to expand...
Click to collapse
You dont have an Xtrons head unit, Xtrons are simply resellers, to find out what unit type you have go to settings/about device.
twelvemonkeys said:
It seems to be the same hardware problem caused by a defective inductor very sensible to overheating with the ext USB, look for the solution in my thread,
Click to expand...
Click to collapse
Really, are you sure its not just a case of flashing the latest MCU or re-flashing the latest MCU if youre already running it ? It usually is.

Related

the wifi isn't working, need's help!!

my nexus is rooted.
i have tried some roms and everything was good
but today the wifi stop workimg(i tried to turn it on but it just writing "turnning on wifi" and nothing happend's) i tried to replace radio but it didn't worl too.
even tried a very old nand backup!!!
i'm now after the nand backup with 4.0.1 / itl41f / kk1
i don't know what else to do///
need's your help!!!
please give me a hand here
somrbody please???
nobody have even a hint???
just give me something to try?!
Put the stock ROM on the phone, do a factory reset. If this doesn't fix your problem then maybe you need to call Samsung as you have a HW issue.
Shieze said:
Put the stock ROM on the phone, do a factory reset. If this doesn't fix your problem then maybe you need to call Samsung as you have a HW issue.
Click to expand...
Click to collapse
flashed the stock rom still no change the wifi isn't working.
somebady have other ideas????
It sounds like a hardware problem
have you tested other devices on your wifi network .....
If it was just not connecting to your network . That would be fixable. But since even on the stock rom . It will not even turn on
Deffinately a hardware problem. Take it back to the store you bought it from.
silver03wrx said:
If it was just not connecting to your network . That would be fixable. But since even on the stock rom . It will not even turn on
Deffinately a hardware problem. Take it back to the store you bought it from.
Click to expand...
Click to collapse
i will, tnx.
by the way after flashing stock rom the phone doing reboot's alone all the time! and still no change about the wifi
there most be a way to check this thing???
i'm going crazy here.
i flashed a stock rom 4.0.2 and still no change about the wifi
but also now the nexus doing reboots alone every secound????
Did you do a factory reset ?? Maybe some craps in phone memory...
doudou425 said:
Did you do a factory reset ?? Maybe some craps in phone memory...
Click to expand...
Click to collapse
i tried to do. still isn't working. something is very weird here. mybe it's a hardware problem' but why there is reboots???
after i tried to put a stock rom the nexus keep doing reboots all the time.
i rooted the nexus again and puted the cm rom and the reboots stopped!
somebody know way it's happaning???
fixed!!!!!
just want to let you know that the problem was fixed.
it was a hardware problem and the wifi chip was replaced.
I had the same thing happen with my SGN i'm waiting for Negri electronics review my RMA right now. But its good to know that they fixed yours.

WIFI will not turn on

Hi guys i have a lg g3 that has been running fine on kitkat
it the received the lollipop update OTA and all went fine apart from now it wont turn the WiFi on
you can click it on and it moves to on but seems to be always trying to turn on..?? without turning on.?
any ideas..?
I have done a reset etc still no joy
Did you try to reflash? (I think that you mean by resetting that you full wiped your phone and not reflashed the rom)
KingOfDope said:
Did you try to reflash? (I think that you mean by resetting that you full wiped your phone and not reflashed the rom)
Click to expand...
Click to collapse
Yes after it updated to lollipop I lost the ability to turn on wifi..
It was there to turn on but would not it showed it trying to turn on but just hung trying to turn on..device updated from kitkat to lollipop via its own update OTA.
Cn not work it out
sas007 said:
Yes after it updated to lollipop I lost the ability to turn on wifi..
It was there to turn on but would not it showed it trying to turn on but just hung trying to turn on..device updated from kitkat to lollipop via its own update OTA.
Cn not work it out
Click to expand...
Click to collapse
Try flashing the correct modem
KingOfDope said:
Try flashing the correct modem
Click to expand...
Click to collapse
Why or how could I do that..
Device was on stock kit Kat and it updated itself to lollipop..
Sent from my LG-D855 using XDA Free mobile app
Same issue here.
I get around it by forgetting network then just signing in again. Wifi works perfectly until I leave the house and return later. Then I just do the above and viola, working wifi.
I've checked with speed test app and wifi is definitely working.
Funny thing is, if I switch off wifi then turn back on it also works.
Only when ive left home and returned later does this bug arise.
Hello guys,
This thread is a little bit old, but I am curious to know if you found a workaround for this issue.
I have the same problem as the OP (not at the second poster): since I received Stock Lollipop the WiFi won't turn on. When I try to, it says "turning on" for a while then acts like it is off.
I just bought my LG G3, NCIX the reseller, refuses to refund me or replace my phone...
I performed several factory resets and tried to flash different KK stock Roms. The weird thing is that the WiFi works with KK...
Thanks for your help.
Identical experience here.
I recently got a D855 16GB, which was on stock unbranded V10a, jumped through several OTA updates through V10g, V10j, and V10k (IIRC) all with wifi working fine before getting the lollipop upgrade OTA for V20c.
Immediately wifi will not switch on - the switch itself is on, but with the off section a lighter grey compared to the bluetooth switch.
On the wifi screen itself it says "Turning Wi-Fi on..." but after a while the switch reverts to off.
It's now had OTAs to V20e and V20h, but wifi is dead on both versions.
Note that this is stock and unrooted (never rooted) so I can't believe it's something I've done. Next trick will be to root and poke around /data/misc/wifi.
Does bluetooth work or the problem is only with the wifi? I also have the same problem, wifi, bluetooth is not working and when I check in the settings the mac adress it says "unknown".
Sent from my Onda V975m using Tapatalk
Accountability
Unfortunately this isn't a unique problem. There have been countless bad updates from multiple manufacturers. In this litigious world, I'm surprised no one has sought damages for bad updates that effect usability.
I have the same problem from yesterday. wifi and bluetooth seem to be turning on but they never turn on. i've done many factory resets but it didn't work. has someone found a solution?
^^^ Exactly the same issue. Would love a solution!
Same issue. Tried Hard and soft reset and have also updated firmware using LG Mobile Support Tool but had no success.
sazi said:
I have the same problem from yesterday. wifi and bluetooth seem to be turning on but they never turn on. i've done many factory resets but it didn't work. has someone found a solution?
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Click to collapse
ok, after 24h with this problem I think I got it back to working. Let me explain what have I done:
1. Mine is a dual sim model, that I bought in hong kong by the end of 2014.
2. Yesterday, I removed sim #2 (no longer needed), without removing the battery. I had a couple of messages indicating to restart the phone, blah blah. Can't remember if I finally restarted it or not.
3. This morning I saw no wifi connection in my phone, only 3G. Tried to start wifi in the quick access menu, but this kept blinking, never starting wifi. Restarting phone... nothing. turning off bluetooth... nothing.
I figured out that the problem had to be related with the SIM as this is the last thing I had done with the phone. Thus, I tried this, with success:
4. I turned off the phone, changed sim from slot #1 to slot#2 and started the phone. Wow, it worked for some minutes, then stopped, then started again. Well, a good sign.
5. Changed again sim from slot #2 to slot #1: Wifi working again. After some time it stopped working, but soon started again. Hasn't given me more problems (after only 30 min, that's true).
Hope it helps.
jimbobmcginty said:
Identical experience here.
I recently got a D855 16GB, which was on stock unbranded V10a, jumped through several OTA updates through V10g, V10j, and V10k (IIRC) all with wifi working fine before getting the lollipop upgrade OTA for V20c.
Immediately wifi will not switch on - the switch itself is on, but with the off section a lighter grey compared to the bluetooth switch.
On the wifi screen itself it says "Turning Wi-Fi on..." but after a while the switch reverts to off.
It's now had OTAs to V20e and V20h, but wifi is dead on both versions.
Note that this is stock and unrooted (never rooted) so I can't believe it's something I've done. Next trick will be to root and poke around /data/misc/wifi.
Click to expand...
Click to collapse
HELLO
I have exactly the same problem and I think we're not the only...
D855 :
-Wifi and Bluetooth doesn't work.
-Wifi keep turning on itself and the battery drain..
-3g/4g works perfectly.
-Downgraded on kk and Wi-Fi works so it is not a hardware issue
-Even on fulmics Rom Wi-Fi and Bluetooth doesn't work
HEELP ME PLEASE
Got the same problem here. I have my G3 since november 2014 and recently I rooted it to install CM 13 on it and Xposed bcs I got tired of the laggy software of LG. One morning I woke up to drink some water and saw my phone restarting a lot of time... ok I thought its a simple bootloop. Tried to install CM again, didnt fix it. Flashed stock software and still... Bought new battery and new power flex and the problem is still there. I go into download mode, installed the software with LGs support tool and got pass the bootloop, but now wifi nor bluetooth works. I thought it's the software so I dared myself again to root it and installed TWRP and CM13, but it wouldn't boot. I installed then Liquidsmooth, based on CM13, and got it to boot up, but in the configuration menu where WiFi is needed to be added it couldn't turn on. I skiped it and in the middle of the process it started again to restart. I don't know if it's a hardware based problem or software... But I would like to try everything out before I have to buy a new phone.
SoulEater45 said:
Got the same problem here. I have my G3 since november 2014 and recently I rooted it to install CM 13 on it and Xposed bcs I got tired of the laggy software of LG. One morning I woke up to drink some water and saw my phone restarting a lot of time... ok I thought its a simple bootloop. Tried to install CM again, didnt fix it. Flashed stock software and still... Bought new battery and new power flex and the problem is still there. I go into download mode, installed the software with LGs support tool and got pass the bootloop, but now wifi nor bluetooth works. I thought it's the software so I dared myself again to root it and installed TWRP and CM13, but it wouldn't boot. I installed then Liquidsmooth, based on CM13, and got it to boot up, but in the configuration menu where WiFi is needed to be added it couldn't turn on. I skiped it and in the middle of the process it started again to restart. I don't know if it's a hardware based problem or software... But I would like to try everything out before I have to buy a new phone.
Click to expand...
Click to collapse
I'm not the only one
I don't understand why it doesn't work because if you downgrade on kk versions your wifi & bluetooth will be back...
tchointeur said:
I'm not the only one
I don't understand why it doesn't work because if you downgrade on kk versions your wifi & bluetooth will be back...
Click to expand...
Click to collapse
Have you maybe tried to change the kernel of your device? I have never done that so I am scared if I would damage something.
http://forums.androidcentral.com/google-nexus-7-tablet-2013/306730-wifi-stuck-turning.html
Here someone says it's the kernel that is having problems and installing a new one and going maybe back to the old one will fix it.
SoulEater45 said:
Have you maybe tried to change the kernel of your device? I have never done that so I am scared if I would damage something.
http://forums.androidcentral.com/google-nexus-7-tablet-2013/306730-wifi-stuck-turning.html
Here someone says it's the kernel that is having problems and installing a new one and going maybe back to the old one will fix it.
Click to expand...
Click to collapse
Maybe but wich kernel do we haveto use? Even on fulmics 5.3 it doesn't work!
tchointeur said:
Maybe but wich kernel do we haveto use? Even on fulmics 5.3 it doesn't work!
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Click to collapse
I installed CM13 and in the setup screen I actually had wifi and I could connect to my router. It was kinda strange. But bcs I have some problems beside wifi, the reboot thing, I couldn't test out if it works too. Try flashing CM13 or ROMs that are based on it like Liquidsmooth. Maybe it will help.
SoulEater45 said:
I installed CM13 and in the setup screen I actually had wifi and I could connect to my router. It was kinda strange. But bcs I have some problems beside wifi, the reboot thing, I couldn't test out if it works too. Try flashing CM13 or ROMs that are based on it like Liquidsmooth. Maybe it will help.
Click to expand...
Click to collapse
I tried flashing other roms but twrp says "unmount of /system failed: no such volume " "script succeeded: result was (0.20000)".. when i restart it's on bootloop NO CHANCE

Sony Xperia M5 dual bluetooth not connecting to android car radio

Hi
My Xperia M5 dual (E5633) with latest firmware 30.2.B.0.100 doesnt stay connected to my Android 4.4.4 car radio. The radio has the RK3066 chip and latest MCU ver and it is rooted.
The issue i have is, once paired it connects for a few seconds the disconnects repeatedly and it does this until i unpair or connect anothe bluetooth device to my phone. This all started with the Marshmallow update. I can connect ather devices to my phone and radio and have tried a Samsung S6 with Marshmallow and it worked.
I am hoping someone can help as i dont want to downgrade to lollipop just for this one issue.
Regards Matthew
I thought that I was the only one having this issue.
The same scenario, can't conect it to a bluethoot device.
Any suggestions?
Regards
I downgraded back to 5.1. And now it works perfectly. I have tried Sony but haven't heard from them yet. What phone and head unit you have?
I have a E5606 with MM, and already looked for the issue. It's the MM update, I read it here And it seems that a downgrade will do it as it worked with you.
So it seems there is still not resolution for this problem. I am hoping they bring a new update for Marshmallow that solves this.
Looks like it has something to do with the way the link is established. Have the problem where media streaming sound does not come through. Found that if I switch Bluetooth off and on again on the M5, while the radio is on, seems to fix it. Pain that you have to do this every time.

SM-T805 WiFi and Bluetooth won't switch on

My neighbour has handed me her Samsung Galaxy Tab S model SM-T805 as she is unable to get the WiFi/Bluetooth enabled. It can be toggled to on but it remains grey. It appears to be up to date with Android 6.0.1
I have searched a lot for the solution and most suggestions have been to factory reset it. But after having done so, Samsung setup is still unable to enable WiFi. I went one step further by doing a factory reset/wipe data from Recovery but no dice.
What's the next step at this point?
edit: I also ran Device Initialization in Samsung's Smart Switch PC software to download and fully reset the tablet. Same issue still persists. Must be broken wifi hardware?
Salty Wagyu said:
My neighbour has handed me her Samsung Galaxy Tab S model SM-T805 as she is unable to get the WiFi/Bluetooth enabled. It can be toggled to on but it remains grey. It appears to be up to date with Android 6.0.1
I have searched a lot for the solution and most suggestions have been to factory reset it. But after having done so, Samsung setup is still unable to enable WiFi. I went one step further by doing a factory reset/wipe data from Recovery but no dice.
What's the next step at this point?
edit: I also ran Device Initialization in Samsung's Smart Switch PC software to download and fully reset the tablet. Same issue still persists. Must be broken wifi hardware?
Click to expand...
Click to collapse
Downgrade the firmware first before condemning the hardware
Downgrade to lollipop.
It seems strange, but this can fix firmware errors causing these issues.
If it works after a downgrade it can then be updated as normal.
ashyx said:
Downgrade the firmware first before condemning the hardware
Downgrade to lollipop.
It seems strange, but this can fix firmware errors causing these issues.
If it works after a downgrade it can then be updated as normal.
Click to expand...
Click to collapse
I'll just get a lollipop build from sammobile?
I don't know what Galaxy Tab S type it is to choose the correct firmware, there are many like SM-T805C, SM-T805K
Salty Wagyu said:
I'll just get a lollipop build from sammobile?
I don't know what Galaxy Tab S type it is to choose the correct firmware, there are many like SM-T805C, SM-T805K
Click to expand...
Click to collapse
I suggest updato.com.
If it's just the international T805 model then just download the one for that.

A520W WiFi keeps dropping after upgrading to Oreo

My wife and I both have SM-A520W phones. I OTA upgraded mine while travelling in Europe (risky, I know) and didn't have any issues with it. I waited til we returned to upgrade hers, and since upgrading, she has been unable to maintain a WiFi connection beyond a number of minutes, e.g. 5-30 minutes.
I downgraded her phone to Nougat (A520WVLS2BRD2 / A520WOYA2BRD2) using Odin, and things returned to normal. When the July 1st patch (A520WVLU2CRF2 / A520WOYA2CRF2) for Oreo was released I tried upgrading it again over the air, and the WiFi issues returned. Unfortunately after upgrading to this version, I can no longer use Odin to downgrade to Nougat, as it results in a "kernel rev check fail device 1 binary 0" even if I don't load the bootrom. I tried doing a fresh load with Odin of the latest Oreo release as well, but the issue persists.
Any suggestions on either how to downgrade to Nougat, or resolve the WiFi issues on her phone? It seems surprising to me that one phone works fine, and the other one fails repeatedly on the same network and carrier (Freedom). Any suggestions would be appreciated.
Hi. I have the same problem. Were you able to resolve the issue?
Unfortunately not in any way that will be helpful. Took the device to an authorized Samsung repair place, they ran diagnostics, and then offered to swap the main board. They did that, and everything has been fine since.
mutantlog said:
Unfortunately not in any way that will be helpful. Took the device to an authorized Samsung repair place, they ran diagnostics, and then offered to swap the main board. They did that, and everything has been fine since.
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Click to collapse
Could have been a software bug. Personally, I would have got a new phone rather than getting a new motherboard.

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