Database Users

Jiayu S3 PIN Locked by Kinguser app

First of all, I may be posting this in the wrong section. But I desperately need your help on this.
I got a Jiayu S3, and couldn't not try to flash a custom rom on it, so I tried with "Pure AOSP V1 TF".
All went well, untill i found this app which was included with the rom, "Kinguser" (should be Superuser, i believe), which game me the option to toggle root.
At first and only time I opened this Kinguser app, option root was active. I did deactivate it, and reactivated immediately after.
As soon as i reactivated root, the privacy pin screen showed up.
I didn't set any PIN on my phone, so at first i thought it could be something like 1111 or 0000. Tried 5 times and it made me wait 30 seconds. Then tried another 3-4 times.
Here began the real mess: "forgot pin" (or psw) didn't show up, but at the time i didn't even know about that recovery option.
I didn't know what to do, so I just thought that a factory reset would certainly solve the problem, how couldn't it? Well, wiped everything, but PIN lock screen didn't go away.
So, wiping everything, I also deleted my gmail account from the phone, and I lost the possibility to lock phone and give it a new password (Android Device Manager). Too bad at the time I didn't know about this recovery option as well...
Now I'm out of ideas. I think I've tried every method I could find with a search of "Smartphone PIN locked". Tried with resets, plugins, deleting files with adb..
How do I unlock my phone?
little update: after a factory reset, for 2-3 seconds, it shows the default initial screen, but it doesn't last more that and i just can't do anything.
Now i managed to bring back the stock rom, but with that i lost the twrp recovery, and i can't find a way to make pc recognize the phone to reflash it.
It seems it's going worse instead of better...

I had just bought this Jiayu S3 and planned to bring it on holidays on wednesday, but i'm starting to think i won't be able to fix it before then

Did you have any resolution to this problem. I am currently sitting in the exact same boat. Did the factory reset, pass code screen still there, I didn't set a pass code. Basically hands tied, can't update firmware, guessing i'll have to get a new phone, but hoping maybe you found a miracle cure! ha! - Thanks for any guidance. - Arden (Seattle, WA)

Just flash another rom (stock/original) and start over.

How have you done that?
Can you help please?
I tried factory reset (volume plus+ power button), hard reset (volume- plus power button), update, and nothing works; I also went to two different specialized stores and they failed to find a way to reinstall the original Android version or a recent one.
Comparing the files with the factory version installed in the phone, the phone report identified three changes:
- a new file: /system/priv-app/7mK0T6e8Z5.apk
- the lost of a file: /system/app/com.android.fallen.apk
- and a modified file: /system/bin/debuggerd

AzulFogo said:
How have you done that?
Can you help please?
Click to expand...
Click to collapse
To flash firmware you can use SP Flash Tool on a windows or linux computer (not sure about macosx). You have to decide which firmware you want (which one do you have now?). The 'official' firmwares can be found on needrom. SP Flash Tool can be found there as well. There are 2 popular LP firmwares built by Jiayu resellers in Europe (Xtreme from Spain and Jiayu.de from Germany). Guides on how to flash are often present at the place where you find the firmware.

Dior DNA said:
To flash firmware you can use SP Flash Tool on a windows or linux computer (not sure about macosx). You have to decide which firmware you want (which one do you have now?). The 'official' firmwares can be found on needrom. SP Flash Tool can be found there as well. There are 2 popular LP firmwares built by Jiayu resellers in Europe (Xtreme from Spain and Jiayu.de from Germany). Guides on how to flash are often present at the place where you find the firmware.
Click to expand...
Click to collapse
Thank you!
I found "Xtreme from Spain":
needrom.com/download/rom-xtreme-rom-tf/
I found the "SP Flash Tool":
needrom.com/download/sp-flash-tool-v5-1424-00/
but it is for Linux... can you send me the link of the windows version?
And I could not found the "Jiayu.de from Germany": can you send the link?
Also, can you recommend some good manual for dummies?
Thanks again for your patient and help!

latest sp flash tools is 5.1532
search needrom with "5.1532" will leed you to the download page
no link allowed here, so ...
for beta 10 from jiyau.de, search google with "jiyau.de Lollipop 5.1.1 - Beta 10 (14.10.2015)".
it will leeds you to the rom.
Good hunting
tuto sp flash tool
https://youtu.be/ztI8sc8MUNo

AzulFogo said:
Thank you!
I found "Xtreme from Spain":
needrom.com/download/rom-xtreme-rom-tf/
I found the "SP Flash Tool":
needrom.com/download/sp-flash-tool-v5-1424-00/
but it is for Linux... can you send me the link of the windows version?
And I could not found the "Jiayu.de from Germany": can you send the link?
Also, can you recommend some good manual for dummies?
Thanks again for your patient and help!
Click to expand...
Click to collapse
see jaunedoeuf's answers
I would like to add: if you come from KK and go to LP, you must use firmware upgrade to update/adjust internal SD partition layout. Good Luck! if you succeed, and are happy with firmware, consider voting @ http://forum.xda-developers.com/android/general/firmware-jiayu-s3-t3212184 (almost 100 votes)

First, thank you for your great help!
With your suggestions, I managed to install Lolipop in my Jiayu S3S (upgraded from Kit Kat) - Xtreme ROM TF (JiayuS3-5.1Extreme1.1SP.zip).
However the problem remain... the phone still is asking for a PIN (that I never had put there, in first place)...
What should I do now?

you could try factory reset and are you sure its the phone asking for pin and not the sim card

Audio drivers went missing during update

I already opened an RMA for the phone but they have no stock so I figured I'll take another shot at it.
The short version is that my gf messed up and updated the system while transferring her data from her old phone with the tapNgo thing.
I've done multiple facory resets, downloaded the rom from ZTE support, put it on SD, flashed it from recovery and deleted cache and nothing helps.
I don't have the exact error log anymore since I don't have the phone with me now but it reads something along the lines of
loading /proc/devices/audio/sound------ cannot find file/directory.
I looked it up and after a lot of Googling it seems like the symlink to the actual driver folder is missing and I have no idea why.
Does anyone know if i can fix this with an ADB shell?
Alternatively, I tried to follow some of the many guides out there to put the phone in EDL mode and relfash it with XiamiFlash utility but after trying 3-4 downloads and 900 versions of misflash all I ever get is "reading hello packet... unable to communicate to com4"
Haaaalp please?
*edit* this is pretty much exactly the same as what I'm getting: https://forum.xda-developers.com/android/help/sound-card-detected-t3379736

The problem with the phone is it makes no sounds?

gpz1100 said:
The problem with the phone is it makes no sounds?
Click to expand...
Click to collapse
the sound drivers for the OS is missing completely, no sound no microphone.
The syslog looks like this(this is from another phone its its the exact same problem):
AudioDaemon: Opening sound card state : /proc/asound/card---/state
AudioDaemon: Open /proc/asound/card---/state failed : No such file or directory
AudioDaemon: Sleeping for 100 ms

Strange issue indeed. Which model do you have? Which specific firmware file are you flashing to it?
I would think flashing the full unmodified factory firmware using the stock recovery will wipe the phone completely, including the /data partition.
Everything worked before? Help me understand the order of events. What is tapngo?
While in the midst of transferring information to or from the phone, a software update appeared and she accepted/installed it?

Its the A2017U model.
I had tried the 1.1.0 B15 firmware from SD card as well as the 1.0.0 B29 older firmware.
Right now its on B17 Nougat 7.1.1, the phone runs and works perfectly just has no audio hardware.
I wasn't there for the exact procedure but basically she powered it on, it asked for sim, she inserted that, tapped the "transfer my data" and then held the two phones together to get the NFC process started. That starts the bluetooth transfer process and it takes a really long time where it transfers all data and apps from the old phone.
At this point the phone still made sounds when adjusting the volume etc.
Somewhere in that process the "update available" notification came up and she pressed the option to install it.
After I got home I tried to figure out what is wrong, first i thought the phone wasn't registered on the cellphone network but then after a bit i figured out the audio is the issue, then i did a factory reset both from the phone UI and tried again from recovery mode, both times chose the "erase all data" option but neither time did it help at all.
I don't really know enough about phones but i think its the bootloader/something very early on thats messed up. Either that or the audio chip really just did fry.
My hope was to get the full factory image for everything that you need to install with the EDL mode thing but I can't find any good reliable guides for that.

It's the first thread in the development section.. Stickied even.
https://forum.xda-developers.com/axon-7/development/edl-emergency-dl-mode-twrp-unlock-t3553514
Get this package - B15-NEW_FULL (Nougat)
I really don't understand zte's numbering scheme. Newer versions get lower numbers. Makes no sense. That's the full firmware except for the fastboot which passes commands. At this point it's a non issue given the issue you're having.

So I don't need to load TWRP on it, I can still keep it just stock with unlocked bootloader?
I tried that miflash thing before, i had it connected un usb download mode but nothing worked for me, I'll try doing this guide when i get home step by step again.
Their firmware numbers is based on numbers and letters 1.0a-z and then 1.1a-z so 1.0z1 is less that 1.1a1

Ok I have an update
Did miflash, nothing changed.
Ulocked bootloader and miflashed the bootloader from the sticky thread.
The phone made the startup sound and audio worked for a few seconds after android started up and then stopped again
*edit*
ok so after it showed signs of life i re-locked the bootloader, and did the OTA updates to 7.1.1 and the audio seems to be working for good now!!
Conclusion seems to be the bootloader was the key to get it working again. Hope this helps others if it comes to it.

HELP!!!! Tried to update and Bricked my head unit...

It’s been about a week and half and I haven’t been able to get my radio back up and working, I have an Android Unbranded head unit running 4.2.2. I tried to post a picture of my info from my settings screen but couldn’t get the url link to go thru. But it pretty much looks like this: CPU INFORMATION
CORTEX-A9 DUAL CORE
RAM INFORMATION
DDR3 1 GB
ANDROID VERISON
4.2.2
MCU VERISON:
4.3.16-7-01-650201-151022
SYSTEM VERSION:
2.9.4_20150316
I installed what I thought was the right update but I may have gotten the files mixed up and updated the wrong file via my mini SD card and now it’s stuck on the opening screen which is the Chevy logo and won’t go any further, PLEASE help me unbrick my radio so I can get my tunes back, haven’t had any music in my truck for over a week now and I’m going crazy!

Find the correct factory firmware and flash it through the factory recovery.. or try flashing one of the custom rom. 4.2.2 version.
Mtcb firmware is what you need.

Nsx93 said:
Find the correct factory firmware and flash it through the factory recovery.. or try flashing one of the custom rom. 4.2.2 version.
Mtcb firmware is what you need.
Click to expand...
Click to collapse
Ok I’ll do that but My head unit doesn’t have any physical buttons just a reset button and I’ve tried to get it into recovery mode so many times and I can’t seem to do it, I e tried every combination of buttons and nothing’s worked...any suggestions?

Nsx93 said:
Find the correct factory firmware and flash it through the factory recovery.. or try flashing one of the custom rom. 4.2.2 version.
Mtcb firmware is what you need.
Click to expand...
Click to collapse
Still can’t get my head unit to read anything, I uploaded the right firmware to my SD card and it’s still stuck on the opening screen, and still can’t get it to go into recovery mode... I feel like I’ve tired everything and NOTHINGS working, I’m about to throw in the towel....ANYONE HAVE ANY SUGGESTIONS OR SHOULD I TAKE A LOST N BUY A NEW DECK?

graverober138 said:
Still can’t get my head unit to read anything, I uploaded the right firmware to my SD card and it’s still stuck on the opening screen, and still can’t get it to go into recovery mode... I feel like I’ve tired everything and NOTHINGS working, I’m about to throw in the towel....ANYONE HAVE ANY SUGGESTIONS OR SHOULD I TAKE A LOST N BUY A NEW DECK?
Click to expand...
Click to collapse
from what I understand, you can use Phoenixcard, and flash an image to a USB or SD card. Then insert into the GPS or USB cable, power on the unit, and allow it to boot from that to correct a incorrect flash....just what I have been reading. I would start along those lines....I am in the same boat, but I don't have my original firmware to test

Att: Still nothing....someone w/ experience
My head unit is still stuck on the opening screen, I’ve downloaded so many different file and tried soooo many techniques that I’m seriously beat, I’ve never had a device that I couldn’t figure out, especially after almost a month of reading and tried different approaches. So if someone could take a look at my Info in the opening forum and give me some tips or advice I’d REALLY APPRECIATE!!!!

Still bricked and haven’t had music in car in over a month...
Ive tried everything and havent gotten anywhere so
im about to throw this radio into the trash if no one
else has any othetr suggestions ....

Device not starting/black screen after stock-ROM flash via Odin

Hello, everyone,
I tried to install LineageOS on my S10 Plus yesterday. That worked so far, but I found that it didn't have a decent camera app and the Samsung Watch wasn't that easy to connect either. So I thought I'd just go back to the Stock ROM again. I then downloaded the latest stock firmware according to this guide and installed it with Odin. The installation also runs through, after the installation the mobile phone starts and after the start screen there is an Android man with the signature "Erasing". After a few seconds, the device turns off and stays black. Even if I put it on the charger or try to restart it, nothing happens. I keep getting into download mode and recovery, but that's about it. Multiple reinstallations and resets via the recovery didn't help - the phone just won't start.
I used the CSC_... and not the HOME_CSC_... at the firmware is the right one for my phone.
Is there any way I can salvage the device? I'm afraid that something in the memory is defective now, which has nothing to do with the flashing itself. Do you have any ideas?
Many thanks!

tefracky said:
Hello, everyone,
I tried to install LineageOS on my S10 Plus yesterday. That worked so far, but I found that it didn't have a decent camera app and the Samsung Watch wasn't that easy to connect either. So I thought I'd just go back to the Stock ROM again. I then downloaded the latest stock firmware according to this guide and installed it with Odin. The installation also runs through, after the installation the mobile phone starts and after the start screen there is an Android man with the signature "Erasing". After a few seconds, the device turns off and stays black. Even if I put it on the charger or try to restart it, nothing happens. I keep getting into download mode and recovery, but that's about it. Multiple reinstallations and resets via the recovery didn't help - the phone just won't start.
I used the CSC_... and not the HOME_CSC_... at the firmware is the right one for my phone.
Is there any way I can salvage the device? I'm afraid that something in the memory is defective now, which has nothing to do with the flashing itself. Do you have any ideas?
Many thanks!
Click to expand...
Click to collapse
same thing happened to me today. but I flashed my s10e the bootloader and modem file of android 9 from twrp, the phone did not boot up and I loaded the stock rom again, then when I open it, it's the same as yours, I really need urgent help.
Releases · corsicanu/9820-bootloaders_and_modems
Contribute to corsicanu/9820-bootloaders_and_modems development by creating an account on GitHub.
github.com
EDİT: Anyway, I solved the problem, I flashed the bootloader and modem file that is suitable for my current version from the same site with twrp and the phone turned on. maybe you can solve it by flashing the bootloader and modem file suitable for the current version. try if you want

Thanks a lot, this worked!

tefracky said:
Thanks a lot, this worked!
Click to expand...
Click to collapse
I'm glad it worked.
I was very afraid that the phone died, what did you do for 5 days in this state?
Now I have a question in my mind: When Samsung releases an update in the future, will the bootloader and modem files be updated when we update it with odin? won't it be updated? After that, do we will always update manually as twrp? do you have any idea?

Well, I simply didn't use a mobile phone in these days. It was a very "interesting" experience, but not a huge problem. I sometimes opened WhatsApp as Windows App (interestingly, which works without phone).
I don't know, what happens at a Samsung Update, but until Android 13, I will not update (so probatly never). In our German forum (www.android-hilfe.de), a pre rooted and debloated "Stock"-Firmware is provided, but I can't install it, since my Bootloader is too new (V15 instead V14 for the ROM). When it is possible, I will install this firmware. If you are interested, here is the link: https://www.android-hilfe.de/forum/...3-2022-stock-rom-v2-0-pre-rooted.1000713.html

tefracky said:
Well, I simply didn't use a mobile phone in these days. It was a very "interesting" experience, but not a huge problem. I sometimes opened WhatsApp as Windows App (interestingly, which works without phone).
I don't know, what happens at a Samsung Update, but until Android 13, I will not update (so probatly never). In our German forum (www.android-hilfe.de), a pre rooted and debloated "Stock"-Firmware is provided, but I can't install it, since my Bootloader is too new (V15 instead V14 for the ROM). When it is possible, I will install this firmware. If you are interested, here is the link: https://www.android-hilfe.de/forum/...3-2022-stock-rom-v2-0-pre-rooted.1000713.html
Click to expand...
Click to collapse
thanks, if i'm going to use stock rom i prefer to root it myself

[issue found][archived] FRP / OEM locked device that won't start OS

Edit 3: TL;DR: This is appears to be an S8 exclusive error, it's shown in the recovery:
"Product device tree not found, couldn't verify firmware" or something like that. For solutions, please look that up.
So, I bought a bootlooping S8 in the hopes of fixing it.
Since OEM and FRP lock are on, I went with installing Samsung firmware on it, as installing a custom recovery at this point is not possible.
The default recovery wouldn't work, so I wasn't able to know which firmware exactly to flash, because I couldn't find out which model exactly I have bought.
I do not know the carrier of the device either, but it should be from some german provider.
All of the firmwares I tried just bootlooped, but the recovery works again, except for ADB, which is quite unfortunate, and I have no idea why it fails, the device shows up when I'm in the recovery menu, but as soon as I activate ADB, it's gone from the list of connected devices.
Combination firmwares sometimes show some turning gears animations, but then crash with some, thought often memory related, pretty random crash issue.
Another problem I am now facing is that in the process of trying to find a working firmware I now upgraded the devices "binary level"? (forgot what exactly it was called) to 6, so I can't flash any older firmware or combination firmware than 6, since downgrading isn't allowed.
I received the device with either binary level 1 oder 2.
My theory is that I don't have the right firmware, since I keep seeing dm-verity and license errors...
I am happy to provide logs if necessary.
The goal is to have an unlocked bootloader/ custom recovery.
I literally am going INSANE over this FRP blocking me from flashing TWRP and being done with this in under 10 minutes, please help :c
PS: Some random info attached
Edit 1: With the IMEI code i found while opening the phone I now know my model number: SM-G950FZKADBT.
Any tips for finding the PDA code of the originally installed system? Or finding a matching firmware?
Is this even neccesary? Why do official firmwares not work for me? :c
Edit 2: Somewhat solution: I think the only way to recover this device would be to find it's firmware, which is just NOT to be found...
So, until a miracle happens I'm gonna keep reading "Firmware is not valid" errors in the log

Did you look in samfrew.com ? ? ? I just grabbed a fw from there.
The dnld was loooong so I purchased a privilege for faster speed . . .