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[Q]SOLVED Noob GT-I9505 WIFI dead after upgrd 4.4.2 searched and tried all solutions

First of all please forgive me for opening yet another S4 wifi problem after kitkat upgrade, but I have tried everything I could possibly find here, on youtube and other forums. The only thing left to try is flash the modem but I'd rather ask before I brick my phone
I'm not quite sure if this is the same issue every single time or if in my case it is due to my ignorance and errors. I was an iphone/unlock/jailbreak user until last year so please bear with me. Android is new and fun (but scary) territory to me.
Situation, what I did and possible mistakes on my side:
-I'm in Spain but I bought my factory unlocked phone on amazon and it was for the Polish market (GT-I9505 Black, 16 Gb)
-My device was rooted don't even remember how I did it last year so no useful info on that side a part of using odin for windows.
- Until yesterday I was on jellybean, not quite sure if 4.2.2 or 4.3
- Yesterday I upgraded to 4.4.2 via mobile odin and yes I checked the boxes about clearing/deleting cache or whatever it's called.
- Used a stock firmware downloaded from other site (that one starting with "S" and with a great amount of firmwares for samsung devices of several countries)
- I chose a firmware randomly (maybe this was my mistake) because I hade read that the firmware was not that important and people where usimg leaked german firmwares on on phones from elsewhere. But I did choose one that matched the country of my phone (XEO/XX Poland)
- Everything is working fine but without wifi I'm buying new Mb bundles almost every 2 hours and I'll be broke very soon
If you guys think the solution is flashing the modem which file should I use? I see lots of them with different models/codes and I'm completely lost and have read a lot about messing with bootloaders/modems etc bricking devices so I'm freaking scared and ask for your charitative help!
All the info I could gather about my device right now (now I know I should have gathered this info also before attempting to upgrade but it's too late now!
SAMSUNG GALAXY S4 GT-I9505 Black Edition
Manufacturing date: 2013-12-23
BASEBAND Version: I9505XXUEMK8
BOOTLOADER Version:I9505XXUEMK8
PDA Version: I9505XXUGNG8
CSC Version: I9505YXZGNH2
Kernel: 3.4.0-2309103
KOT49H-I9505UGNG8
Android 4.4.2
Product code: GT2I9505ZKAXEO
Original CSC: XEO
Firmsware's CSC: XEO
Active CSC code: XEO
CSC Country: Poland
Any help would be greatly appreciated, I feel so dumb and frustrated right now that any joke or insult would be accepted with humbleness lol

Forgot to add I used the *#0011# command and went to wifi menu. Tried the ping test and it states: passed
status: DISCONNECTED
SSID: Unknown SSID
( In case this info is of any use )

voxel.xyz said:
Forgot to add I used the *#0011# command and went to wifi menu. Tried the ping test and it states: passed
status: DISCONNECTED
SSID: Unknown SSID
( In case this info is of any use )
Click to expand...
Click to collapse
Relax it has solution . The problem becomes coz the baseband and the bootloader are olds (android 4.3).
SAMSUNG GALAXY S4 GT-I9505 Black Edition
BASEBAND Version: I9505XXUEMK8
BOOTLOADER Version:I9505XXUEMK8
PDA Version: I9505XXUGNG8
CSC Version: I9505YXZGNH2
* Quick solution for recover WIFI:
1. Reflash the STOCK I9505XXUGNG8 (XEO) firmware via ODIN.
2. Let the process finish and reboot normally.
3. Dial *#1234# and have to appear this:
AP: I9505XXUGNG8
CP: I9505XXUGNG8
CSC: I9505YXZGNH2
4. Reflash again if not. Good luck

Thank you so much for your helpful reply Joku1981 !!!!! You made my day!!!
Can I do that with Mobile Odin??? My PC broke (Graphics card burnt) and until a couple of months won't be able to buy a new one.
To make sure I understand you: You mean Flash again the same firmware I used to upgrade to 4.4.2 in the first place?
I used this Firmware: I9505XXUGNG8_I9505YXZGNH2_XEO
should I try Flashing that same Stock Firmware again? and if does not work keep reflashing until the baseband and the bootloader get updated?
Why did they not update ? is this common or an error on my side???
I hope it can be done with mobile Odin since I can keep my root status, If I have to do it in Desktop Odin do I have to Re-Root after flashing???
Thank you so much for you kind help!!!!!!
Joku1981 said:
Relax it has solution . The problem becomes coz the baseband and the bootloader are olds (android 4.3).
SAMSUNG GALAXY S4 GT-I9505 Black Edition
BASEBAND Version: I9505XXUEMK8
BOOTLOADER Version:I9505XXUEMK8
PDA Version: I9505XXUGNG8
CSC Version: I9505YXZGNH2
* Quick solution for recover WIFI:
1. Reflash the STOCK I9505XXUGNG8 (XEO) firmware via ODIN.
2. Let the process finish and reboot normally.
3. Dial *#1234# and have to appear this:
AP: I9505XXUGNG8
CP: I9505XXUGNG8
CSC: I9505YXZGNH2
4. Reflash again if not. Good luck
Click to expand...
Click to collapse

SOLVED!!!!!
After nobody answered if I could use again "mobile Odin" to flash once more and try to fix my wifi not working I opened mobile odin and it gave me a warning about my version and having a wrong bootloader as a possibility of soft bricking my phone so I decided to stay away of mobile Odin this time.
I used desktop Odin (at work since my pc broke) and exactly the same firmware file downloaded from sammobile (but re-downloaded it just in case) and had to flash twice, the first time it went through the whole process ok right until the end where it showed the FAIL message.
I didn't know if I should turn off the phone stuck in download mode and with the process bar at 100 % or retry flashing without turning it off. So I decided not to turn it off (afraid it would get soft bricked or something). I closed mobile Odin but left phone On with download mode screen active and opened mobile Odin again got the "added"message and the blue color showing it was properly connected to the phone and started flashing process again....
I started getting red error messages saying the progress bar display was wrong (and it wasn't updating/kept stuck in the previous 100%) but after it finished it was flashed and everything was ok. WIFI WORKED!!!!!!
Now the weird part.....in case this happens /helps someone else:
- My phone DID NOT get wiped. My launcher and my apps stayed intact (I thought flashing even the same firmware always wiped data, I'm I wrong???)
- All my root apps (root explorer, titanium backup, so on and so forth) where there and working fine. One root checker stated I was rooted and another one stated I wasn't but even my launcher (nova) was working just as if I never flashed the phone.
- Since I was unsure of my "root" state and I did not have "supersu" app in my apps drawer I tried installing it via playstore but It always gave an error message (the application could not be installed in the default location)
- I rooted again just in case and the root process finished without errors but still I had no "supersu" app and one root checker said I was rooted and the other I wasn't. Tried installing "supersu" from the playstore but same error and could not get installed.
- I searched here and in other forums for similar problems/solutions but nothing worked until I tried several things that fixed the problem. Not really sure which fixed it so I will write them down in the order I did them:
1. Opened folder mount which I already had installed and it gave me an error and asked me to try the fix which I did.
2. Opened linked2sd which I already had installed also previous to the firmware flash. It gave me an error and asked me which was the partition to use (as when I first installed it) in my case it was ext4. And it seemed to start working as it normally does. No further error when reopening it.
3. Rebooted the phone and tried entering recovery mode to wipe cache etc but It never entered recovery mode. I get the message about going into recovery mode (top left corner small red letters) But right after that it reboots and I get the samsung logo and my home screen.
4. Tried reinstalling supersu again and no success. (By the way before I did all this steps I tried rooting again but got to the same point. No supersu on my apps drawer)
5. Downloaded BusyBox install (opened it but did not use it in any way, maybe something in the installation fixed my problem)
6. Opened mobile Odin just for curiosity sake and it opened fine and asked for downloading of the extra stuff as when I installed it the first time. After that I closed it
7. Rebooted normally (no recovery mode since I'm stuck without it)
8. Tried installing "supersu" and NOW it worked!!!
9. Checked in both root checker apps and both confirm I'm rooted and supersu started asking for granting permissions to apps again as it normally does!
10. Everytime I attempted flash, root, and even after some reboots I took the battery off (since I read in several threads it helped/was mandatory)
Conclusion now my WIFI problem is fixed, my root problem (that appeared doing the reflash for fixing my wifi problem) is also fixed. The only thing I could not fix is not being able to get into recovery mode.
Does anyone know a solution for recovering the ability to get into recovery mode????
Thanks to Joku for lighting me into re flashing once and again until my wifi was fixed!

Can't downgrade from 6.0.1 to 5.0.1 (BOB4) N910C (because of Software Check failure)

Hi!
I'm having trouble downgrading my Note 4 N910C to 5.0.1.
I was stupid enough to upgrade to the newest Android version (6.0.1) through Odin, but i don't like it a bit. It is just too slow. (for instance, unlocking my phone with my case takes 2 seconds!).
I tried other updates in the past, like the 5.1.1 version and other newer updates from then, but they are all very slow too compared to the BOB4 5.0.1 version, i always reverted back normally without a hitch.
I now get a message on my phone screen, that the Revision Binary doesn't check out (something like: System 1 Binary 2).
I've tried a lot, like first installing older firmwares through zip files on CWM recovery (also 4.4.4 etc), but nothing works. Reverting back to 5.1.1 will work, but never to an earlier firmware version(with the zip files i will get boot loops, even after wiping everything).
May there be a way to unlock the bootloader or install an older one? Or some other way to divert the software rev. ckeck?

Tennie said:
Hi!
I'm having trouble downgrading my Note 4 N910C to 5.0.1.
I was stupid enough to upgrade to the newest Android version (6.0.1) through Odin, but i don't like it a bit. It is just too slow. (for instance, unlocking my phone with my case takes 2 seconds!).
I tried other updates in the past, like the 5.1.1 version and other newer updates from then, but they are all very slow too compared to the BOB4 5.0.1 version, i always reverted back normally without a hitch.
I now get a message on my phone screen, that the Revision Binary doesn't check out (something like: System 1 Binary 2).
I've tried a lot, like first installing older firmwares through zip files on CWM recovery (also 4.4.4 etc), but nothing works. Reverting back to 5.1.1 will work, but never to an earlier firmware version(with the zip files i will get boot loops, even after wiping everything).
May there be a way to unlock the bootloader or install an older one? Or some other way to divert the software rev. ckeck?
Click to expand...
Click to collapse
most note 4 users want to downgrade but till now it is impossible i have tried every thing even pit files without success

amse_010 said:
most note 4 users want to downgrade but till now it is impossible i have tried every thing even pit files without success
Click to expand...
Click to collapse
It's possible, but only samsung service centres know how Just brought back from service today my NOTE4 910C with downgraded OS and bootloader, from 6.0.1 OXA firmware to 5.1.1 SEB

Damn, i've tried everything internet and XDA said i could do, but to no avail. I am now trying to be content with 6.0.1. I am having everything smooth now, with the exception of the slow unlocking time(i think they have some sort of very deep sleep mode now, which saves more battery, but it's so annoying).
I've rooted the N910C with the CF-Auto-Root image, and installed Kernel Adiutor. With Kernel Adiutor i can set the minimum frequency of the .LITTLE CPU to a higher frequency, which helps a lot in smoothness(but it's a little bit worse for your battery). After that i deleted all the crappy programs in Titanium backup like google books/games/etc.
Everything is now as smooth as it was with 5.0.1 BOB4, except the unlocking bit.

stuck on loading screen, can't go back to stock firmware

Good day,
i tried flashing custom rom in my Note 4 N910C. however, i messed up big time. i had many problems, then i decided to go back to the official stock firmware i have in my PC.
every time i run the ODEN, i put the Rom in the PDA, then click "start". it takes a few seconds, then i see this message (all threads completed. (succeded 0 / failed 1)
i tried restarting my PC, but no luck. i changed the PC port, but no luck. i restarted my phone many times, but no luck.
it is worth mentioning that i wiped everything using the recovery mode.
the download mode information:
Current Binary: Samsung official
System status: official
Knox Warrant VOID: 1
RP SWREV: 2
SW REV. CHECK FAIL. DEVICE:2, Binary: 1
all i want now is to return to my stock firmware and my phone is working again
i am no expert, but i want to learn, but that is why i risked it
can you help?
thanks so much

Go on SamMobile site and download the rom related to your device. Apply via Odin and ready
You can also use the Phone Info + app to get the exact ROM for your device

S3Killer said:
Go on SamMobile site and download the rom related to your device. Apply via Odin and ready
You can also use the Phone Info + app to get the exact ROM for your device
Click to expand...
Click to collapse
before i ruined my phone, it was running 6.0.1 Marshamallow.
i am now downloading Marshamllow ROM from sammobile for my note 4. and i will try again. hopefully it will work i will be really broken if it does not work again!!!!!

You can not download any ROM version. It has to be in your area. You know what is the base version of its N4?
You did wipes after you have installed? Enter recovery mode - wipe - advanced and select "Dalvik, System and Cache"

S3Killer said:
You can not download any ROM version. It has to be in your area. You know what is the base version of its N4?
You did wipes after you have installed? Enter recovery mode - wipe - advanced and select "Dalvik, System and Cache"
Click to expand...
Click to collapse
yes, i am downloading the the ROM version that is suitable to my phone which is N910C.
and yes, i did wipe everything actually.
i have been sitting on my PC for hours, but due to my lack of experience, i am having a very hard time resolving this issue.
i hope it is resolved

Okay. Take it easy
You wore what version of Android? 4.4.4? 5.1.1?

S3Killer said:
Okay. Take it easy
You wore what version of Android? 4.4.4? 5.1.1?
Click to expand...
Click to collapse
i really thank you for trying to help out bro
before i ruined it, it was running Marshamallow 6.0.1 stock firmware.
after having issues, i had to wipe everything and flash back to an older version 5.1.1 (i have it in my PC). and only then i started having these issues i stated earlier.
i am still waiting for my download to finish, i am downloading the Marshamallow 6.0.1.
i started to doubt that flashing it to an older version, maybe this where the problem is.
what do you think?

Use google translator ... lol
There is an update of 5.1.1 (a COJ5) that prevents you from coming to 4.4.4. Recently that came out a version 6.0.1 that stock also prevents returning to 5.1.1
I do not know if it can be what happened to you.
You can use the Samfirm app to be able to download faster.
When flashing is you're downloading, it gives an error post the screen here for us.

S3Killer said:
Use google translator ... lol
There is an update of 5.1.1 (a COJ5) that prevents you from coming to 4.4.4. Recently that came out a version 6.0.1 that stock also prevents returning to 5.1.1
I do not know if it can be what happened to you.
You can use the Samfirm app to be able to download faster.
When flashing is you're downloading, it gives an error post the screen here for us.
Click to expand...
Click to collapse
brother, it worked
i tried the new ROM i downloaded 6.0.1 and it worked. it seems the problem was with the older ROM i have previously.
everything is OK now
i thank you again for helping bro

Good job friend

No WIFI after root and Nandroid

Hi,
Wifi on my NoBranded Samsung GT-I9515VE LTE German dont work, if i push the wifi button on he switch instant off.
One Year ago i had rooted my Phone (Lollipop 5.0.1) , after 6 Months i installed TWRP 3.0.2, all works fine, i had make a Nondroid Backup etc.
Then i try CM13 and CM14 some Months.
Because of bugs i wanted back to my rooted stock 5.0.1 Nandroid backup,doin it before 2 Weeks, all works fine.
After this (1 week ago) i intalled Samsung Kies on PC to make a backup of my Phone data etc. all works, Kies show me my current and newest Firmware are identical.
Yesterday, i wanted make a Backup with Kies again,but wtf, Kies show me a ?new? Firmware ? whats wrong.....no matter, i installed the new Firmware (coz i know i have my 5.0.1 stock root Namdroid Backup ,as safety).
After installing i had 5.0.1. again on my phone ?.it has changed nothing, but now i have no root and i dont have TWRP ,okay back to the roots!
Now i rooted the Phone again ,now with CF-Auto-Root-jfvelte-jfveltexx-gti9515, it works!
Then i installed TWRP-3.0.2-0-jfvelte, it works too.
With twrp i wrote my Rooted Stock 5.0.1 Nandroid backup back on phone and everything works except Wifi.
Now i need some help coz im in big trouble ...btw my english sucks.
Here some infos with SamMobile Device Info
Device type : jfvelte
Product name : jfveltexx
Knox bit : 0x1 (no matter)
Product Code : GT-I9515ZSADBT
PDA : I9515XXU1BOJ3
CSC : I9515DBT1BOI1
Baseband : I9515XXU1BPJ1
Bootloader : I9515XXU1BPJ1
Thank you

I have solved the Problem by installing Stock Rom and root New.
Please close .

unbricking hard brick - moto x style

hey guys
i just brick my phone (no idea how, flashed android 7 firmware) after flash my phone was working for like 2 hours, then i let himself update a security options. After update my phone went brick
As far i found :
- installed Qualcoom QDLOADER 9008 driver
- found QFIL programmer
i need to have programmer path (something related to JTAG) and build xmp path
Where i can find them? Or is it a other way to resscue my phone?

I feel your pain. My timeline:
- The phone was unlocked but still in Stock Nougat (7.0?). Got that from OTA in Brazil.
- I tried to update to LineageOS 7 via TWRP. After a full wipe (everything, system, data, card, cache etc) I installed the new ROM. Turned on, bootlooped forever.
- Searching around I found out that there was no modem in the Nougat roms and for some reason I needed to flash a Marshmallow modem for my region to make that work (I think there is no Nougat modems around or something).
- I found a LA_DS modem for 6.0, flashed that using TWRP, still bootloop. Tried other roms using TWRP, still bootloop.
- I then downloaded a full stock old 6.0 firmware to go back to stock but the phone wouldn't accept some files ("preflash validation failed").
- Searched around and found out that you can't downgrade a bootloader from Moto.
- Using fastboot, I flashed the files the phone was willing to accept and it finally booted the 6.0 Marshmallow stock rom, but with no networking (radio/modem/baseband/IMEI missing).
- Flashed the 6.0 modem for my region again and everything worked. Connected on WiFi, dual sim cards detected etc.
- I started to install every update the phone showed to try to update it back to latest MM version.
- The three first updates went ok, the fourth turned off the phone to never turn on again.
Looks like there is no way out of this. My phone is pretty old and MotoCare in Brazil will charge a lung and a half for repair.

dsnunes said:
I feel your pain. My timeline:
- The phone was unlocked but still in Stock Nougat (7.0?). Got that from OTA in Brazil.
- I tried to update to LineageOS 7 via TWRP. After a full wipe (everything, system, data, card, cache etc) I installed the new ROM. Turned on, bootlooped forever.
- Searching around I found out that there was no modem in the Nougat roms and for some reason I needed to flash a Marshmallow modem for my region to make that work (I think there is no Nougat modems around or something).
- I found a LA_DS modem for 6.0, flashed that using TWRP, still bootloop. Tried other roms using TWRP, still bootloop.
- I then downloaded a full stock old 6.0 firmware to go back to stock but the phone wouldn't accept some files ("preflash validation failed").
- Searched around and found out that you can't downgrade a bootloader from Moto.
- Using fastboot, I flashed the files the phone was willing to accept and it finally booted the 6.0 Marshmallow stock rom, but with no networking (radio/modem/baseband/IMEI missing).
- Flashed the 6.0 modem for my region again and everything worked. Connected on WiFi, dual sim cards detected etc.
- I started to install every update the phone showed to try to update it back to latest MM version.
- The three first updates went ok, the fourth turned off the phone to never turn on again.
Looks like there is no way out of this. My phone is pretty old and MotoCare in Brazil will charge a lung and a half for repair.
Click to expand...
Click to collapse
Pretty similar situation on my part. I downgraded back to 6.0 and when it tried to take the December update I ended up with the same thing as you. I ended up getting a replacement from Moto for under 100 dollars which was worth it rather than trying to find a solution that doesn't exist.