S4 I9505 Won't turn on after unlock bootloader - Galaxy S 4 Q&A, Help & Troubleshooting

my s4 wont turn on after unlock.
looks dead.
wont turn on, enter on recovery, charge...
sorry for english

The S4 bootloader is unlocked by default.
And the models that do have a locked bootloader can't be unlocked.
If the phone can't boot into download mode then you have to take it to a service or throw it away.

He could be referring to a SIM unlock, but regardless, he's taking the device to a service center or selling it for parts.

GDReaper said:
The S4 bootloader is unlocked by default.
And the models that do have a locked bootloader can't be unlocked.
If the phone can't boot into download mode then you have to take it to a service or throw it away.
Click to expand...
Click to collapse
Swapping motherboard is a solution...?

Overlord01 said:
Swapping motherboard is a solution...?
Click to expand...
Click to collapse
It is.

GDReaper said:
It is.
Click to expand...
Click to collapse
ok, I'll do it.
Thank you for your help :good:

Related

Samsung s4 i337 32Gb wont boot

Hello,
Maybe someone can help..
Samsung s4 i337 32Gb will only show the Samsung logo when turned on and after about 2 seconds nothing, screen blank , ( New Screen ) No lights , though it vibrates when its first turned on,
For what ever reason if I keep messing with it( take batter in and out) , it will boot all the way, Even then after a short time it turns off again, and that's only after a few days of messing with it..
Any ideas ?
on s side note I am a retired computer /electronic engineer and have an idea how these work, I repair them on the side for clients and so forth, but am at a lose with this one, Its my personal and would love to be able to get pics and so forth off it,,
Thank you !!
Is the phone running a stock Samsung rom? Have you tried reflashing a stock rom or performing a factory wipe?
audit13 said:
Is the phone running a stock Samsung rom? Have you tried reflashing a stock rom or performing a factory wipe?
Click to expand...
Click to collapse
yes it's stock and No have not re flashed the rom , wont stay on long enough for a rom flash or a system wipe..
Maybe a battery problem? This happens regardless of whether the phone is or is not connected to a power source?
audit13 said:
Maybe a battery problem? This happens regardless of whether the phone is or is not connected to a power source?
Click to expand...
Click to collapse
Thank you , Yes I have tried a few different battery's with and with out the charger and Nothing changes
It won't stay in download mode either? Was the phone ever dropped? Exposed to moisture? Is it an att phone?
x_MarkV_x said:
Hello,
Maybe someone can help..
Samsung s4 i337 32Gb will only show the Samsung logo when turned on and after about 2 seconds nothing, screen blank , ( New Screen ) No lights , though it vibrates when its first turned on,
For what ever reason if I keep messing with it( take batter in and out) , it will boot all the way, Even then after a short time it turns off again, and that's only after a few days of messing with it..
Any ideas ?
on s side note I am a retired computer /electronic engineer and have an idea how these work, I repair them on the side for clients and so forth, but am at a lose with this one, Its my personal and would love to be able to get pics and so forth off it,,
Thank you !!
Click to expand...
Click to collapse
The same thing happened to my i337 after I installed one app (soft keys) and reboot. Samsung logo showed up for a second and then went dark.
Went to recovery and wipe /factory reset twice did not work.
Finally, went to download mode and odin the NB1 firmware. That solved the problem.
I was on OK2 bootloader then. I do not know what bootloader you are on.
I
audit13 said:
It won't stay in download mode either? Was the phone ever dropped? Exposed to moisture? Is it an att phone?
Click to expand...
Click to collapse
Yes it was dropped, But only form about 2 feet , landed on a shoe and it has a cover, but after that is when I started having issues come to think of it ..
sway8966 said:
The same thing happened to my i337 after I installed one app (soft keys) and reboot. Samsung logo showed up for a second and then went dark.
Went to recovery and wipe /factory reset twice did not work.
Finally, went to download mode and odin the NB1 firmware. That solved the problem.
I was on OK2 bootloader then. I do not know what bootloader you are on.
I
Click to expand...
Click to collapse
problem is , it wont stay on long enough in down loader mode, Plus I do have things I would like to save if I can.,
I just may have to try and find another 32Gb main board or a broken screen phone type thing and start over..
If it wont stay on, I'm not how the data could be pulled from the phone. If USB debugging was enabled, adb commands may be useful in recovery mode.
audit13 said:
If it wont stay on, I'm not how the data could be pulled from the phone. If USB debugging was enabled, adb commands may be useful in recovery mode.
Click to expand...
Click to collapse
I may end up losing the data, So be it..
Would have been nice to figure out what is going on with this one though..
If anyone knows where I can get a i337 32Gb main board, I maybe interested in it..

Boot loader reset and unlocked phone

Hello everyone. I have 2 questions. And thank you in advanced and have a merry xmas!!!!
1. how do I check if my phone is simcard unlocked?
2. If my phone is unlocked regardless of how it's unlocked will doing a boot loader reset (holding the power, volume up and home buttons) relock the phone?
Samsung Galaxy s7 edge original carrier ATT currently using tmobile.
Again, thank you very much!!
ron608 said:
Hello everyone. I have 2 questions. And thank you in advanced and have a merry xmas!!!!
1. how do I check if my phone is simcard unlocked?
2. If my phone is unlocked regardless of how it's unlocked will doing a boot loader reset (holding the power, volume up and home buttons) relock the phone?
Samsung Galaxy s7 edge original carrier ATT currently using tmobile.
Again, thank you very much!!
Click to expand...
Click to collapse
borrow another provider sim card from a friend or go to a store and ask if you can use a sim for a few minutes, some stores may help.
if your phone is unlocked, a bootloader reset will not relock your phone.
But if I'm using a tmobile Sim in an att phone doesn't that mean the phone is unlocked?
ron608 said:
But if I'm using a tmobile Sim in an att phone doesn't that mean the phone is unlocked?
Click to expand...
Click to collapse
Yes it does, and that whole 're-locking after updating' or 're-locking after a reset' doesn't happen anymore.
You can wipe data a hundred times from recovery if you want, once the phone is unlocked, it's unlocked. Period.

Nexus 6P BootLoop with Locked BootLoader

Hi all,
I'm sure I am still one of many that cannot use XCnathan32's solution to fix their phones. I think the biggest problem is that it is difficult to discern between hardware vs. software being the culprit. If hardware, nothing I do can help. I've wanted to use the solution but when the computer cannot even find the device/recognize it, I cannot even start the solution. Let me explain what my phone is like/ the state the boot loader is in:
Google logo is the only thing to show.
Even when trying to boot from bootloader -> recovery mode, it only goes to the google logo and boot loops from there.
Unfortunately I did not unlock developer options / USB debugging so my bootloader is LOCKED, my computer does not recognize the 6P at all unless in boot loader. It gives a strange description of the device, but does not treat it as a device in the device manager. Even if it does show I cannot update it's driver. It essentially seems like only the bootloader is a device rather than the phone.
I have tried leaving the device to boot in hopes of it miraculously starting and allowing me to go to developer options, this has failed as well.
Would anyone know/ be willing to explain how to proceed from here? I'm sure the options are limited when the device does not even show up on the computer.
Note: I don't know much about TWRP, ADB, SDK etc, its all 2 days new to me.
Thanks for any help!
Take a trip to home Depot. Put your heat gun above the finger print unlock after getting power to 5%. Profit.
mattrb said:
Take a trip to home Depot. Put your heat gun above the finger print unlock after getting power to 5%. Profit.
Click to expand...
Click to collapse
I got it! Used a blowdryer though. Unfortunately it went back to boot looping even after I did a factory reset. I'm going to apply the fix now that OEM has been unlocked and USB debugging!
Archavius said:
I got it! Used a blowdryer though. Unfortunately it went back to boot looping even after I did a factory reset. I'm going to apply the fix now that OEM has been unlocked and USB debugging!
Click to expand...
Click to collapse
Congrats on getting it to work! Let me know if you need any help with flashing the modified images.
XCnathan32 said:
Congrats on getting it to work! Let me know if you need any help with flashing the modified images.
Click to expand...
Click to collapse
I'm currently writing a guide to get to the OEM unlock stage on your thread . Thanks so much for all of your work, my phone is currently booting. Its got the google logo with a unlocked pad lock on the bottom and then it switches to a section with android warnings saying "Device software cant be checked for corruption, please lock the bootloader".
Its actually bootlooping again... I've flashed all the images possible on your downloads part of the thread Not sure if there's another option to take to get rid of the bootlooping.
Archavius said:
Its actually bootlooping again... I've flashed all the images possible on your downloads part of the thread Not sure if there's another option to take to get rid of the bootlooping.
Click to expand...
Click to collapse
Have you been here? ?
Exodusche said:
Have you been here?
Click to expand...
Click to collapse
That's the exact guide I used. I also used his first guide before that one was published by XDA. It almost seems too simple though. I feel like I'm missing something. I flashed the 48B_A4 firmware, then the twrp3_1_1_4Cores.img and reboot. It still boot looped. I then proceeded to flash the other possible imgs to see if they would work. I cant flash the EX kernel since I can't boot into recovery since it just boot loops again.
mattrb said:
Take a trip to home Depot. Put your heat gun above the finger print unlock after getting power to 5%. Profit.[/QUOTE
Excuse my pessimism, but for real? I'm having the same issue, what exactly does this do?
Click to expand...
Click to collapse
JohnnyKilo said:
mattrb said:
Take a trip to home Depot. Put your heat gun above the finger print unlock after getting power to 5%. Profit.[/QUOTE
Excuse my pessimism, but for real? I'm having the same issue, what exactly does this do?
Click to expand...
Click to collapse
This will throttle the big cluster of processors making it so the phone can stop boot looping by using only the small clusters.
Click to expand...
Click to collapse
Archavius said:
JohnnyKilo said:
This will throttle the big cluster of processors making it so the phone can stop boot looping by using only the small clusters.
Click to expand...
Click to collapse
Format all partition except for internal storage.
1. Flash N2G48B_vendor.img into vendor partition
2. Flash N2G48B_4Cores.img into boot partition
3. Flash purenexus_angler-7.1.2-20170725-OFFICIAL.zip
4. Flash BeansGapps-Full-7.1.x-20170610.zip
5. Flash EX4_1_1_4Cores.zip (Elemental Kernel), step up the core speed one notch on first screen, leave the rest on default.
Reboot.
Waited about 10min on the animation screen (4 dot jumping), eventually phone completed booting
Click to expand...
Click to collapse
sorry to hijack your thread, can i know the steps that you took to enable oem unlock ?
Because i am in your similar situation, all i can see is the google logo & bootloader is locked (i cannot go to the settings menu because the phone doesnt bootup, i am stuck in the google logo).
If i run the fastboot flashing unlocl it fails (since bootloader is locked)
ShadowSounds said:
sorry to hijack your thread, can i know the steps that you took to enable oem unlock ?
Because i am in your similar situation, all i can see is the google logo & bootloader is locked (i cannot go to the settings menu because the phone doesnt bootup, i am stuck in the google logo).
If i run the fastboot flashing unlocl it fails (since bootloader is locked)
Click to expand...
Click to collapse
You need to use a heat gun or hair dryer above the fingerprint sensor. Keep phone at low battery but not empty. 5%
.....
mattrb said:
You need to use a heat gun or hair dryer above the fingerprint sensor. Keep phone at low battery but not empty. 5%
Click to expand...
Click to collapse
lol it worked. Thanks
ShadowSounds said:
lol it worked. Thanks
Click to expand...
Click to collapse
How did you know your battery was at 5%? At the fastboot screen I see that the battery says OK, but not a specific number. Does that battery field change when it gets below "OK"?
Archavius said:
I'm currently writing a guide to get to the OEM unlock stage on your thread . Thanks so much for all of your work, my phone is currently booting. Its got the google logo with a unlocked pad lock on the bottom and then it switches to a section with android warnings saying "Device software cant be checked for corruption, please lock the bootloader".
Click to expand...
Click to collapse
This is my phone. Can you help me?
Hi there - I ended up having to use a blow dryer to throttle the phone using High heat. I wouldn't recommend it, it wasnt safe and my phone after fixing stopped working in an hour. If your phone isn't working despite following the fix above get a new phone, the pixel 3a seems like a nice new option, good luck!
Stuck in recovery mode
Archavius said:
JohnnyKilo said:
This will throttle the big cluster of processors making it so the phone can stop boot looping by using only the small clusters.
Click to expand...
Click to collapse
OK, I don't have a bootloop problem per se, but I changed my battery and now it only goes to the Reboot bootloader screen. The arrow keys don't work to change the menu. Sometimes I can get it to Recovery mode, but neither the power key or arrow keys will work. Once I got it to the Start, but the power key did nothing. ADB devices returns nothing, so even though I installed the Google USB drivers in Android Studio I can't get the computer and the Nexus to talk to each other. I'm ready to try heating the device, but that goes against everything I've ever known about electronic devices. Are you sure? .
Click to expand...
Click to collapse
Don't heat up your phone, this thread is uselss for you.

no OEM unlock in developer options

Hello everybody,
I want to install custom rom. I activated developer options but there are no OEM unlock button. How can I unlock OEM then?
Thank you in advance
nobody knows ?
borisrazer said:
nobody knows ?
Click to expand...
Click to collapse
Unless you are using the Verizon/AT&T variant (and maybe some other variant too, Google it), all other S5 variants already have their bootloader
unlocked.
That option isn't available for older Sammy phones anyway, so don't worry.
phamanhvu01 said:
Unless you are using the Verizon/AT&T variant (and maybe some other variant too, Google it), all other S5 variants already have their bootloader
unlocked.
That option isn't available for older Sammy phones anyway, so don't worry.
Click to expand...
Click to collapse
I don't have verzion/AT&T i think, because phone bought in latvia and there are no verision shop, if I correctly understanding that verzion/AT&T is shop/mobile network povider. So, Im sure that oem not unloacked by default, because I tried to install clockworkmod, when I use buttom combinations vol+power, phone load default os.
borisrazer said:
I don't have verzion/AT&T i think, because phone bought in latvia and there are no verision shop, if I correctly understanding that verzion/AT&T is shop/mobile network povider. So, Im sure that oem not unloacked by default, because I tried to install clockworkmod, when I use buttom combinations vol+power, phone load default os.
Click to expand...
Click to collapse
What is your variant? Most likely G900F I guess. Go to Setting/About Device to check your device's model number.
phamanhvu01 said:
What is your variant? Most likely G900F I guess. Go to Setting/About Device to check your device's model number.
Click to expand...
Click to collapse
Yes, it is G900F
borisrazer said:
Yes, it is G900F
Click to expand...
Click to collapse
Congratulations, your device already has an unlocked bootloader. Just ignore the disappearance of that OEM unlock option, flash TWRP then flash whatever ROM you want. Be sure to use the right baseband for your ROM though.
phamanhvu01 said:
Congratulations, your device already has an unlocked bootloader. Just ignore the disappearance of that OEM unlock option, flash TWRP then flash whatever ROM you want. Be sure to use the right baseband for your ROM though.
Click to expand...
Click to collapse
hm.. I already did it.. Firstly I tryied to unlock oem, i found that no oem unlock in options, after that I installed twrp, and now, when I use button combination , I see message: recoverly loading... after 10 sec, phone restarting and loading default rom. what the problem then?
borisrazer said:
hm.. I already did it.. Firstly I tryied to unlock oem, i found that no oem unlock in options, after that I installed twrp, and now, when I use button combination , I see message: recoverly loading... after 10 sec, phone restarting and loading default rom. what the problem then?
Click to expand...
Click to collapse
Are you using the correct baseband/bootloader that TWRP requires?
I think yes, I used TWRP for klte
phamanhvu01 said:
Are you using the correct baseband/bootloader that TWRP requires?
Click to expand...
Click to collapse
I think yes, I used TWRP for sg900f from there https://twrp.me/devices/samsunggalaxys5qualcomm.html
borisrazer said:
I think yes, I used TWRP for sg900f from there https://twrp.me/devices/samsunggalaxys5qualcomm.html
Click to expand...
Click to collapse
Out of ideas. Are you suing the latest MM bootloader? If yes then I guess you better ask for support in the TWRP page. It should work well tbh....
If your flashing by Odin turn off auto reset on Odin ten when flash should be successful then pul battery out then do the 3 button combo I had the same problem
ttocs99 said:
If your flashing by Odin turn off auto reset on Odin ten when flash should be successful then pul battery out then do the 3 button combo I had the same problem
Click to expand...
Click to collapse
I flashed with odin3 v.3.10.7 .
Tried to flas 2.xx 3.xx versions of TWRP for SM-G900F (europe) from there https://twrp.me/devices/samsunggalaxys5qualcomm.html
tried to disable auto reboot in Odin and pull out battery and cable after flash... Anyway, after all actions, when I press button combinations I have message:
recovery booting
recovery is not seandroid enforcing
set warranti bit: recovery
but, after few seconds phone restarting again and starting default android.
Im realy don't know, what I do wrong..
borisrazer said:
I flashed with odin3 v.3.10.7 .
Tried to flas 2.xx 3.xx versions of TWRP for SM-G900F (europe) from there https://twrp.me/devices/samsunggalaxys5qualcomm.html
tried to disable auto reboot in Odin and pull out battery and cable after flash... Anyway, after all actions, when I press button combinations I have message:
recovery booting
recovery is not seandroid enforcing
set warranti bit: recovery
but, after few seconds phone restarting again and starting default android.
Im realy don't know, what I do wrong..
Click to expand...
Click to collapse
That's very strange just keep on trying till you get it trial and error it'll work in the end which twrp you trying to flash?
When you go to settings search for oem unlock. Don't scroll down through developer mode. Use the search feature on the top and write oem in the search bar then hit search. this will show if OEM unlock is enabled. If it's not you have to use the Verison AT&T way to root.
stratoscar said:
When you go to settings search for oem unlock. Don't scroll down through developer mode. Use the search feature on the top and write oem in the search bar then hit search. this will show if OEM unlock is enabled. If it's not you have to use the Verison AT&T way to root.
Click to expand...
Click to collapse
But he said he has the international version (G900F) which by default is always unlocked.
koragg97 said:
But he said he has the international version (G900F) which by default is always unlocked.
Click to expand...
Click to collapse
That's usually the case. There is an easier way to check anyway. log in to download mode. Press and hold Volume Down, Home and Power buttons, all at the same time. Release the buttons only when the ‘Warning!!’ message appears. Next, press Volume Up button to confirm that you wish to enter Download Mode. The it will state if oem locker is is on or off. By the way the long but easier way to do it its burn back the stock rom but the international version not from any carrier like this one: G900FXXU1ANE2_G900FOXA1ANE2_G900FXXU1ANE2 for UK. Then apply all the updates as normal that must take some time depending on your internet speed. Then you will be able to root using the right file made for the specific version of Marshmallow. See that link: http://techbeasts.com/root-galaxy-s5-android-6-0-1-marshmallow-and-install-twrp-recovery/
Help please!
stratoscar said:
log in to download mode. Press and hold Volume Down, Home and Power buttons, all at the same time. Release the buttons only when the ‘Warning!!’ message appears
Click to expand...
Click to collapse
-----------
So I did this, and released all buttons when I saw the warning sign, then the screen blinked and started saying "ERASING" Is there any coming back from this? It seems I have somehow factory reset the phone (facepalm)
I have a Verizon version Galaxy S5 all stock running 6.0.1
Any help would be appreciated.
phamanhvu01 said:
What is your variant? Most likely G900F I guess. Go to Setting/About Device to check your device's model number.
Click to expand...
Click to collapse
What if i have G900FD?

Bricked Essential Phone by Regular Update 20180107

Anyone get bricked from the last update (I assume January/December security updates). I tried to update my phone yesterday 1/7/2018. My phone basically downloaded everything, told me to restart, loaded into the bootloader 3 times - after i selected normal Boot, and then stopped and charging.
Pretty glad that I had 2 phones.. because I have a video of it bricking in front of my eyes. not sure if I can post links yet.
Any help would be reallly appreciated as I haven't modified anything on it...
Can you still boot into recovery?
neokwlx said:
Anyone get bricked from the last update (I assume January/December security updates). I tried to update my phone yesterday 1/7/2018. My phone basically downloaded everything, told me to restart, loaded into the bootloader 3 times - after i selected normal Boot, and then stopped and charging.
Pretty glad that I had 2 phones.. because I have a video of it bricking in front of my eyes. not sure if I can post links yet.
Any help would be reallly appreciated as I haven't modified anything on it...
Click to expand...
Click to collapse
try to wipe your data fastboot -w or with stock recovery
This video is the last time I could get the phone to turn on. The only signs of life I (saw) on the phone was the LED light when I tried to charge the phone -
after it ran out of battery.
https://photos.app.goo.gl/XaD1W5CUmMpV9U9w2
The screen won't turn on or off. It's like the power button's broken even though it's still pressable. It should have battery though because I've been trying to turn it on with it plugged in.
neokwlx said:
The screen won't turn on or off. It's like the power button's broken even though it's still pressable. It should have battery though because I've been trying to turn it on with it plugged in.
Click to expand...
Click to collapse
ok maybe try power on with volume down
nicoconepala said:
ok maybe try power on with volume down
Click to expand...
Click to collapse
None of these combinations worked. (Held them for at least 3 seconds each)
Power+Up
Power + Down
Power+UP+DOWN
Up+down
neokwlx said:
None of these combinations worked. (Held them for at least 3 seconds each)
Power+Up
Power + Down
Power+UP+DOWN
Up+down
Click to expand...
Click to collapse
Try them for 45 seconds.
Sent from my PH-1 using XDA Labs
avd said:
Try them for 45 seconds.
Sent from my PH-1 using XDA Labs
Click to expand...
Click to collapse
Thanks! It turned on after Vol Down+Power (10 seconds).
Unfortunately every menu option from FastBoot Mode proceeds to black screen
-Start
-Recovery Mode
-Restart bootloader
-Power Off
Got it to work with flash unlock in the bootloader menu! Thanks for the advice everyone!
neokwlx said:
Got it to work with flash unlock in the bootloader menu! Thanks for the advice everyone!
Click to expand...
Click to collapse
glad for you ?
How?
neokwlx said:
Got it to work with flash unlock in the bootloader menu! Thanks for the advice everyone!
Click to expand...
Click to collapse
Can you please tell me how exactly you did this? via command line fastboot?
I can't select anything in the boot loader menu, just like you all options show a black screen. Can't do anything.
Please help!
Essential Phone stuck in Start up screen with Locked Boot loader
Essential Phone stuck in Start up screen with Locked Boot loader, need help to get it back on. Is there a way around to unlock the boot loader from Fast Boot ?
[email protected] said:
Essential Phone stuck in Start up screen with Locked Boot loader, need help to get it back on. Is there a way around to unlock the boot loader from Fast Boot ?
Click to expand...
Click to collapse
You will need to side load the OTA.
You cannot unlock the boot loader unless you check OEM unlock in the developer menu.
Or, at least I have not seen it done.
tech_head said:
You will need to side load the OTA.
You cannot unlock the boot loader unless you check OEM unlock in the developer menu.
Or, at least I have not seen it done.
Click to expand...
Click to collapse
OEM unlocking is ticked off. That's the issue. I've seen in some videos or posts like Chris Paton. Advising to relocate the bootloader after sideloading the beta OTA's... I followed it and now I'm in a soup.
[email protected] said:
Essential Phone stuck in Start up screen with Locked Boot loader, need help to get it back on. Is there a way around to unlock the boot loader from Fast Boot ?
Click to expand...
Click to collapse
try to wipe all user data and reflash the stock ROM through command line..i don 't know if you want to keep your data or just make the phone work
panossd said:
try to wipe all user data and reflash the stock ROM through command line..i don 't know if you want to keep your data or just make the phone work
Click to expand...
Click to collapse
I don't min wiping it off... But I'm unable to access those commands as my Boot loader is locked and OEM Unlocking is not toggled on. Let me know of there is anything I can do in such case.
[email protected] said:
I don't min wiping it off... But I'm unable to access those commands as my Boot loader is locked and OEM Unlocking is not toggled on. Let me know of there is anything I can do in such case.
Click to expand...
Click to collapse
Can u get the phone in fastboot mode??? Try to install lineage os (twrp etc. )
panossd said:
Can u get the phone in fastboot mode??? Try to install lineage os (twrp etc. )
Click to expand...
Click to collapse
Fastboot Mode - YES. But it isn't accepting any commands from there.
[email protected] said:
Fastboot Mode - YES. But it isn't accepting any commands from there.
Click to expand...
Click to collapse
Does your PC sees the phone when in fastboot mode?

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