[Q] Deleted the system on my s4 i9505 - Galaxy S 4 Q&A, Help & Troubleshooting

Unfortunately I have deleted the system of my S4 i9505 from within TWRP :crying:
After having some fun with CyanogenMod I decided to try out the PAC rom. Following the installation instructions on their mod page I wiped the internal data of my phone but what as I was sliding the confirmation I realised that 'system' was checked. Too late
I have read through countless threads on this sight and others but have not had any success.
I have located the stock recovery image for my device.
When my device is first switched on I can still hit volume down + power button, and then volume up to enter the downloading mode (but if I don't the booting begins to loop at the Samsung Galaxy S4 logo and goes no further). Odin still recognises my phone and allows me to flash roms but when it does the auto re-boot at the end I don't have a system and it gets stuck on the booting at the Galaxy S4 logo.
Several threads have suggested that I Fastboot, I'm not sure if this is even an option with the S4 or not but please let me know if it you're sure that it is. I have been unsuccessful with my Fastboot attempts so far but if I just need to persevere with it then I can.
Any insight would be greatly appreciated :fingers-crossed:

In TWRP. Setting and Enable MD5 verification of backup files. (It maybe help.) Or Skip MD5 generation of backup.
And why you don´t flash stock ROM via Odin??

It's really easy.
Just reflash TWRP true Odin. Then flash the rom you want. That's all you need to do.

verny94 said:
In TWRP. Setting and Enable MD5 verification of backup files. (It maybe help.) Or Skip MD5 generation of backup.
And why you don´t flash stock ROM via Odin??
Click to expand...
Click to collapse
I'm not sure what the first part of your post means but I am not even able to access TWRP, that is the problem.
I have flashed the stock ROM via Odin. After I flash the ROM it does the normal re-boot. But I my phone loops on the splash screen without every actually re-booting properly.
Lennyz1988 said:
It's really easy.
Just reflash TWRP true Odin. Then flash the rom you want. That's all you need to do.
Click to expand...
Click to collapse
I have reflashed it but as described above my phone fails to reboot after the flash.
I might be missing something here. I'm not sure how to get into recovery mode after flashing the ROM. Immediately as the device begins to re-boot I've tried holding power button + volume up + home button but the screen goes black and when I let go of the buttons the phone just auto boots itself.
EDIT: My phone automatically attempts to boot whenever it is connected to USB.

Is it possible to flash an entire OS in a ROM rather than just altering the recovery??

1. Flash TWRP recovery true Odin. Make sure Auto-reboot is UNCHECKED. After it finished flashing, unplug it, reboot and try to get to recovery now.

Lennyz1988 said:
1. Flash TWRP recovery true Odin. Make sure Auto-reboot is UNCHECKED. After it finished flashing, unplug it, reboot and try to get to recovery now.
Click to expand...
Click to collapse
I have done that again (now having turned off the Auto-reboot (thanks btw). I can get Odin to come up with a big green PASS for flashing TWRP. Now when I try to boot into recovery however the phone vibrates and the flash screen comes up but then it powers down again. I'm just holding power button + volume up + home button to attempt getting into recovery but it isn't working. Do I need to try and flash another ROM?
EDIT: SUCCESS!!!! I made it to recovery (apparently this post was premature). It looks like failing to un-check the auto-reboot in ODIN was the problem. Thanks a lot man, that was a massive help. From recovery I was able to flash my backup ROM.

Ethereal95 said:
I have done that again (now having turned off the Auto-reboot (thanks btw). I can get Odin to come up with a big green PASS for flashing TWRP. Now when I try to boot into recovery however the phone vibrates and the flash screen comes up but then it powers down again. I'm just holding power button + volume up + home button to attempt getting into recovery but it isn't working. Do I need to try and flash another ROM?
Click to expand...
Click to collapse
No a rom has nothing to do with the recovery not working. Are you holding the buttons long enough? Just try to hold them for like 30 seconds even if it reboots 3 times.

Lennyz1988 said:
No a rom has nothing to do with the recovery not working. Are you holding the buttons long enough? Just try to hold them for like 30 seconds even if it reboots 3 times.
Click to expand...
Click to collapse
Guess I didn't edit my post as quickly as I thought I had, but it's all working now, thanks for the help.

Ethereal95 said:
Guess I didn't edit my post as quickly as I thought I had, but it's all working now, thanks for the help.
Click to expand...
Click to collapse
Good to hear

Related

Help!

I tried downloading 2.3.1 through rom manager, but it failed for some reason. So I accidentally downloaded it through the phone, and as soon as it began installing, I got a little Android image with a triangle that has an ! in it...How can i please fix this?
edit:i tried holding down the up and power keys with no luck...someone please help
monkeytuner said:
I tried downloading 2.3.1 through rom manager, but it failed for some reason. So I accidentally downloaded it through the phone, and as soon as it began installing, I got a little Android image with a triangle that has an ! in it...How can i please fix this?
edit:i tried holding down the up and power keys with no luck...someone please help
Click to expand...
Click to collapse
You might get more help if you rename your topic title to something more descriptive.
Second, try searching the forum; this has been discussed in numerous threads on both this forum and the developer's section, along with how to fix it.
Try the threads about the update, or dialing a certain code to force it manually (that's where I learned the timing trick to get into stock recovery on the NS). On the screen you're at, try pressing and holding power, then pressing/holding volume up, that should get you into stock recovery.
Also, if you can get into fastboot, you can fastboot flash the CWM recovery back to the device. If you made an nandroid before doing anything, you can at least go back to the device's state before you tried the update.
i could not find anything on this issue on google or here
i tried doing vol up and power, but its still at the screen, and my computer doesnt recognize my phone
use the instruction on the topic to ROOT the phone
http://forum.xda-developers.com/showthread.php?t=875875
and in one of the steps you can use the ADB to push a good ROM back into the phone to be re-flashed
Try just pulling the battery.
If not, you'll have to use fast boot from the SDK. Just follow the howto at the top of this forum to flash original images.
thank you so much!
i locked my bootloader again, and i've been trying to get the 2.3.1 update, but everytime i do try, it freezes at the android warning sign. i also tried installing it via rommanager when i was rooted...whats going on?
any ideas what could be wrong?
monkeytuner said:
i could not find anything on this issue on google or here
i tried doing vol up and power, but its still at the screen, and my computer doesnt recognize my phone
Click to expand...
Click to collapse
monkeytuner said:
any ideas what could be wrong?
Click to expand...
Click to collapse
Are you able to get into Fastboot?
I wonder if part of your problem is that you relocked the bootloader. (Why'd you do that anyways? No advantage, imo.)
Fastboot oem unlock will completely wipe your phone, I mean WIPE EVERYTHING, including the sdcard (photos, music, some apps' data, etc), but such a wipe might get you back to stock firmware and stock recovery, then at least you could boot up. You could also then reflash CWM.
Before doing that, let's try this if you haven't:
Turn off phone.
Hold vol-up, then press/hold power.
You should then be in fastboot mode.
The timing's critical (on my phone anyways) for this step: Select recovery, and have your hands on the power button and volume button ready to push.
Watch the screen very closely, for a bout a half second or so, the screen will flash a box with an arrow dumping out onto the android dude. While that screen is showing, press/hold the power button, then press/hold the vol up button. Important to do the power button FIRST this time (at least it is on my phone).
You should then be able to get into the stock recovery.
Once there, maybe we can figure out where to go, but we need to know how messed up your phone is at this point.
Once in Recovery, you could try wiping cache if it's an option, then trying to reboot. Worth a shot, but not likely to work.
You could also do the factory reset wipe in there, this one shouldn't wipe your sdcard if there's anything critical/valuable on it. It will reset all your settings and logins and wipe the apps you've installed, though. Again, might let you boot up normally.

Unable to reset to factory settings, format memory, flash ROM, etc.

Hi,
My I9100 behaves quite strange.
I am unable to perform factory reset (using code from keypad or command from settings menu) - the phone reboots, goes into recovery mode where I can select wipe data/cache. Doing so has no effect on my phone, after another reboot the I9100 restarts in the same state as before factory reset.
The other thing is that I am unable to format interal memory. After using command from settings menu it says that memory is disconnected, formated, and after that all data (pics, mp3s, etc) are still available.
Also I am unable to flash ROM with any stock (tried KE4 and KE7) or aftermarket (Lightening) software. I tried Odin with and without PIT/Re-partition, also with no effect. The phone boots into previous state nevertheless confirmation in Odin that flashing completed successfully.
And the most aggravating thing is that after I reboot phone I am loosing all the recent data. The phone is booting in the state from before couple of days, with no recent messages etc. Thanks to Google account sync, the mail, calendar and so on re-sync properly, but it is no good solution since pictures, todos etc are gone after reboot.
I believe the thing started to occur after unsuccessful update to Twitter. Tried to do Market cache wipe (as suggested for similar cases to I9000 users), but also to no effect.
Have you any suggestion what else can I do?
strideer said:
Hi,
My I9100 behaves quite strange.
I am unable to perform factory reset (using code from keypad or command from settings menu) - the phone reboots, goes into recovery mode where I can select wipe data/cache. Doing so has no effect on my phone, after another reboot the I9100 restarts in the same state as before factory reset.
Power off .
Go to recovery mode
Hold down menu button + Volume UP + Power button
at splash screen release menu volume then power button .
In the recovery screen find wipe data factory reset and apply .
jje
Click to expand...
Click to collapse
JJEgan said:
strideer said:
Hi,
My I9100 behaves quite strange.
I am unable to perform factory reset (using code from keypad or command from settings menu) - the phone reboots, goes into recovery mode where I can select wipe data/cache. Doing so has no effect on my phone, after another reboot the I9100 restarts in the same state as before factory reset.
Power off .
Go to recovery mode
Hold down menu button + Volume UP + Power button
at splash screen release menu volume then power button .
In the recovery screen find wipe data factory reset and apply .
jje
Click to expand...
Click to collapse
As I said - that doesn't work for me.. :-(
Click to expand...
Click to collapse
Stuck in boot loop - No Recovery mode but can flash using download mode
I am stuck in bootloop. I cant access recovery using Vol Up + Home + Power but I can access Download mode and flash roms using ODIN. But no use. Everytime its stuck in boot loop and either the initial boot logo flashes or it stays stuck at the boot logo. Can please someone help. I read all the comments and lot of people having problem being able to get into Download mode but not in Recovery Mode. I would appreciate if someone can post a detailed response as to how to get rid of this issue.
imran077 said:
I am stuck in bootloop. I cant access recovery using Vol Up + Home + Power but I can access Download mode and flash roms using ODIN. But no use. Everytime its stuck in boot loop and either the initial boot logo flashes or it stays stuck at the boot logo. Can please someone help. I read all the comments and lot of people having problem being able to get into Download mode but not in Recovery Mode. I would appreciate if someone can post a detailed response as to how to get rid of this issue.
Click to expand...
Click to collapse
Wipe data and cache from recovery then flash a rom, you will lose everything not backed up
There is a guide about howto fix this, search first next time
Sent from my GT-I9100 using XDA Premium App
im sure there is another thread around he with 2 people in it that had the same problem as you, flashing via odin or cwm and then still ending up with the same firmware as pre flash.
i'll see if i can spot it and post it here, i dont know if they got it sorted or not tho.
veyka said:
Wipe data and cache from recovery then flash a rom, you will lose everything not backed up
There is a guide about howto fix this, search first next time
Sent from my GT-I9100 using XDA Premium App
Click to expand...
Click to collapse
Mr. veyka perhaps i didn;t drive my point home. Recovery mode is inaccessible. I cant wipe unless i get into recovery. its simple logic. i need to be able to access recovery before i can wipe
@ OP
http://forum.xda-developers.com/showthread.php?t=1178964
That is the thread that i had read which had the same problem as you, i havent read it all but the last few pages tend to lean towards that flash lock go ticked when flashing a ROM via odin.
imran077 said:
Mr. veyka perhaps i didn;t drive my point home. Recovery mode is inaccessible. I cant wipe unless i get into recovery. its simple logic. i need to be able to access recovery before i can wipe
Click to expand...
Click to collapse
Hey bud,
If you can get in to download mode then it should be ok, id try 2 things.
Go over to the the original android dev section and grab the CF kernel that was for the firmware installed, boot in to download and flash it via pda in odin, then try recovery again.
If that doesnt work, then download a full firmware from samfirmware and flash the main 3 files (Modem/CSC/Phone) and that should set your phone back to retail fresh.
ofc another reason could be your volume up button is broken
imran077 said:
Mr. veyka perhaps i didn;t drive my point home. Recovery mode is inaccessible. I cant wipe unless i get into recovery. its simple logic. i need to be able to access recovery before i can wipe
Click to expand...
Click to collapse
Oh, sorry, missed that, my bad
As said, flash cf root and see if that helps, if not check that your volume up key works within the os, if not flash to stock, and reset flash counter with a jig and send in for repairs.
If it does, cf root comes with an app called cwm manager that will allow you to reboot into recovery that way.
Sent from my GT-I9100 using XDA Premium App
Crucio_ said:
Hey bud,
If you can get in to download mode then it should be ok, id try 2 things.
Go over to the the original android dev section and grab the CF kernel that was for the firmware installed, boot in to download and flash it via pda in odin, then try recovery again.
If that doesnt work, then download a full firmware from samfirmware and flash the main 3 files (Modem/CSC/Phone) and that should set your phone back to retail fresh.
ofc another reason could be your volume up button is broken
Click to expand...
Click to collapse
my volume up button works> the reason being you need to press volume up to get into download mode after the Vol down + home + power combo.
There are other people who have had this issue of recovery not available.

[Q] Can only boot to custom recovery via ROm Manager

HI
I have the i9505 samsung s4.
I managed to root it via odin, and flashed the Team win recovery as part of the process. I downloaded root checker and it shows that the device is rooted.
However, when i turn the device off and then try and boot to the custom recover I am finding it impossible.
I hold the volume down, home key then press the power button and keep them pressed. THe phone keeps going to the odin download mode and no further etc. However, I can get to the custom recovery via rom manager. What am i doing wrong??
Using rom manager is fine, however if something goes wrong during a custom rom flash then i will need to use the buttons to boot to custom recovery
Please help
Manny
mannysroot said:
HI
I have the i9505 samsung s4.
I managed to root it via odin, and flashed the Team win recovery as part of the process. I downloaded root checker and it shows that the device is rooted.
However, when i turn the device off and then try and boot to the custom recover I am finding it impossible.
I hold the volume down, home key then press the power button and keep them pressed. THe phone keeps going to the odin download mode and no further etc. However, I can get to the custom recovery via rom manager. What am i doing wrong??
Using rom manager is fine, however if something goes wrong during a custom rom flash then i will need to use the buttons to boot to custom recovery
Please help
Manny
Click to expand...
Click to collapse
Try to turn off your phone manually press and hold power+volumeUp When you see the rebooting recovery on top of your screen (blue) let go of your fingers mate
Sent from Hell ?
Repulsa said:
Try to turn off your phone manually press and hold power+volumeUp When you see the rebooting recovery on top of your screen (blue) let go of your fingers mate
Sent from Hell ?
Click to expand...
Click to collapse
Hi that's what I did but I don't see a blue logo at any point ... Just goes straight to the Odin download screen. Strange that I can get to recovery via Rom manager
mannysroot said:
Hi that's what I did but I don't see a blue logo at any point ... Just goes straight to the Odin download screen. Strange that I can get to recovery via Rom manager
Click to expand...
Click to collapse
Try to flash philz recovery via odin then try to boot into recovery and when it goes fine try to flash the custom recovery you want.
Sent from Hell ?
Repulsa said:
Try to flash philz recovery via odin then try to boot into recovery and when it goes fine try to flash the custom recovery you want.
Sent from Hell ?
Click to expand...
Click to collapse
Tried that and still no difference can boot to the philz recovery from the power options of phone but not using the buttons. Is there something within the phones options I need to enable or disable ?
mannysroot said:
Tried that and still no difference can boot to the philz recovery from the power options of phone but not using the buttons. Is there something within the phones options I need to enable or disable ?
Click to expand...
Click to collapse
If you flash Philz recovery you can boot only when you turn off your phone and by Hold and pressing Power+Volumeup . Im Guessing your asking the Extended Power menu Option by Pressing Power and choose restart > There should be Reboot Option IE Reboot,Recovery,Downloadmode. Mate is your phone rooted? If you want an Extended power menu option try to install WannamXposed , and Enable it from there, Make sure to follow hes Tutorial. Have a nice day.
Repulsa said:
If you flash Philz recovery you can boot only when you turn off your phone and by Hold and pressing Power+Volumeup . Im Guessing your asking the Extended Power menu Option by Pressing Power and choose restart > There should be Reboot Option IE Reboot,Recovery,Downloadmode. Mate is your phone rooted? If you want an Extended power menu option try to install WannamXposed , and Enable it from there, Make sure to follow hes Tutorial. Have a nice day.
Click to expand...
Click to collapse
hi it is the same with both custom and stock rom. I am now running paranoid 4.4.2.
The issue is that I need an option to get to recovery using the buttons. There is no issues getting to recovery from the power menu once the phone is running
It is really annoying me now
Thanks

Recovery Is Not Seandroid Enforcing

I tried to root my phone S7 Edge 6.1.1 just a moment ago using ODIN and CF Auto Root. I got the PASSES! sign in ODIN but upon phone rebooting I am stuck on the Samsung S7 Edge logo screen with text in red 'Recovery Is Not Seandroid Enforcing" up the top.
At this time I am unable to turn my phone off, when I do it just turns back on and goes to the same screen. I can't get into download or recovery mode either.
Any help on how to fix would by greatly appreciated.
Thanks in advance.
Also thought I should add, my phone doesn't get registered when I connect it to my PC either, it wont show up in ODIN so I am unable to flash a stock recovery at this time.
It's trying to boot into recovery.
When you say you rooted with CF Auto Root, what did you do precisely? And did you follow Chainfire's specific instructions regarding the lack of screen output during the process?
Beefheart said:
It's trying to boot into recovery.
When you say you rooted with CF Auto Root, what did you do precisely? And did you follow Chainfire's specific instructions regarding the lack of screen output during the process?
Click to expand...
Click to collapse
Thanks for the reply.
I used CF-Auto-Root-zerolte-zeroltexx-smg925f.tar to root.
The steps I used was to simply put my phone into download mode and use ODIN to flash the file mentioned above. That is as far as I got unfortunately. I did this once before, a few month back when I first got the phone with no issues. I remember having to install TWRP but I couldn't remember if I did that pre-root or post-root. But I think that is where I went wrong.
Now I am unable to do anything with my phone. I can't turn it off, get into download or recovery mode. When I hold down VOL UP+POWER+HOME it just resets the phone back to the samsung logo screen.
Any ideas on what I could do?
You used the CF Auto Root file for an S6 Edge.
Beefheart said:
You used the CF Auto Root file for an S6 Edge.
Click to expand...
Click to collapse
OH GOD. You're right. I just realized that. I was supposed to have them saved into their own folders but I guess I saved that one too the wrong folder.
So what does that mean for the life of my phone then? Is it toast or is it recoverable somehow?
What is your model? Is it the SM-G935F? If so, first things first, download the correct CF Auto Root file for your device (here) and try again. Press VOL DOWN+POWER+HOME and it should reboot into Download Mode. Then try to flash the correct file in Odin again.
These phones are very difficult to hard brick, especially with something like CF Auto Root so you should be ok.
Beefheart said:
What is your model? Is it the SM-G935F? If so, first things first, download the correct CF Auto Root file for your device (here) and try again. Press VOL DOWN+POWER+HOME and it should reboot into Download Mode. Then try to flash the correct file in Odin again.
These phones are very difficult to hard brick, especially with something like CF Auto Root so you should be ok.
Click to expand...
Click to collapse
Thanks.
Yes, it is a SM-G935F. Unfortunately I am unable to reboot the phone into Download Mode. When pressing VOL DOWN+POWER+HOME it just takes me straight back to the Samsung logo where it says "Recovery Is Not Seandroid Enforcing". I'm hoping that once the battery drains completely I will be able to boot into Download Mode again.
Try simply resetting it instead. Press volume down and the power key (don't press home) for around 7-10 seconds. Once it starts to reset, remove your fingers from the buttons very briefly then press volume down, home and power to enter download mode.
Beefheart said:
Try simply resetting it instead. Press volume down and the power key (don't press home) for around 7-10 seconds. Once it starts to reset, remove your fingers from the buttons very briefly then press volume down, home and power to enter download mode.
Click to expand...
Click to collapse
That hasn't worked either unfortunately.
I just found this thread from a guy having a similar problem. He just had to wait for his phone's battery to drain completely and then he was able to enter download mode again.
You shouldn't have to though. If you can get the phone to reset at all (even if it's to make another attempt to go into recovery) then providing you time it right, you should be able to get into download mode. Did keeping your fingers on just the volume down and power buttons do anything? Keep them on continuously for up to 20 seconds and see what happens. Did you say pressing vol up & home & power made it reset and try to again get into recovery? What happens if, as soon as the screen indicated it's resetting, you remove your fingers and quickly press vol down & home & power instead?
Anyway, even if you have to wait until the phone dies, getting into download will be possible eventually. Then worst case scenario would be you having to reflash stock back. Or, as would be my preference, flash TWRP then flash a custom rom zip like Superman.
Just to confirm, I take it you selected OEM Unlock in dev options?
Beefheart said:
You shouldn't have to though. If you can get the phone to reset at all (even if it's to make another attempt to go into recovery) then providing you time it right, you should be able to get into download mode. Did keeping your fingers on just the volume down and power buttons do anything? Keep them on continuously for up to 20 seconds and see what happens. Did you say pressing vol up & home & power made it reset and try to again get into recovery? What happens if, as soon as the screen indicated it's resetting, you remove your fingers and quickly press vol down & home & power instead?
Anyway, even if you have to wait until the phone dies, getting into download will be possible eventually. Then worst case scenario would be you having to reflash stock back. Or, as would be my preference, flash TWRP then flash a custom rom zip like Superman.
Just to confirm, I take it you selected OEM Unlock in dev options?
Click to expand...
Click to collapse
I have never had any trouble getting into recovery or download before so I know the method. But just the properly clarify for you I will explain some of the combination I have tried without success. Bare in mind the phone is constantly turned on and idles on the Samsung logo.
I have tried:
Hold VOL DOWN+POWER+HOME, the phone resets and goes back to the logo.
Hold VOL DOWN+POWER, same as above.
Hold VOL UP+POWER+HOME, nothing happens at all.
Hold VOL UP+POWER, same as above.
Hold VOL DOWN+POWER+HOME, release and repress all on black screen, just goes back to logo.
Hold VOL DOWN+POWER, release and hold VOL DOWN+POWER+HOME on black screen, just goes back to logo.
and numerous other things like random combination to try and enter Download or Recovery mode, which have all failed.
Right now it's just stuck on the Samsung logo and staying there, taking forever to drain battery. I work in the morning so hopefully it is dead by then and I can get into Download mode.
Have already started download stock firmware in hopes that I will be able to flash it after.
Thanks a bunch for your help. If you think of anything else I might be able to try let me know!
Oh wow. 100+ attempts and I followed your last post about holding for up to 20 seconds. I was waiting ~5 seconds and releasing thinking that it hadn't worked.
Finally go into Download mode and will flash stock firmware and let you know how I go.
Thanks again! I owe you a cold one.
EDIT: Was no need to flash stock firmware. Just flashed the proper version of CF Auto Root and it worked. Again, thank you so much!
Fantastic. Hope you get it sorted.
On a side note, you have probably already tripped knox and you will have lost you OS data and possibly even what you have stored on internal storage. If so, I suggest you install TWRP, format data (you will lose everything with this but it removed encryption) and install a custom rom like Superman 1.9 from your external SD. It's better than plain stock and comes pre-rooted with plenty of other mods.
I can't get it to work? What keys did you held down?
This is how my screen looks
cs5-2.4pda.to/7951347.jpg (copy this link in browser)
I tried to root with Odin but I think I might have failed. How can I undo this?
recovery is not seandroid enforcing
hello,
my S7 Edge was rooted with cf-auto-root and worked fine but after 2 monthe I've installed LBE_Security_Rel_6.1.1928_A1_DE_v5_signed and reconized the message device is not tooted.
I was not very clever and cofirmed the question "fix the root problem" I don't remember exactly the words. After that root was gone.
I've flashed the stock Fw G935FXXU1APD1_G935FDRE1APC3_DRE but I still have the message "recovery is not seandroid enforcing" after trying to root with CF auto root.
AP:G935FXXU1APD1
CP:G935FXXU1APD1
CSC:G935FDRE1APC3
Is there any way to get root again
Any help on how to fix would by greatly appreciated.
Thanks in advance.
doodlemeat said:
I can't get it to work? What keys did you held down?
This is how my screen looks
cs5-2.4pda.to/7951347.jpg (copy this link in browser)
I tried to root with Odin but I think I might have failed. How can I undo this?
Click to expand...
Click to collapse
Simply hold down Home + Power + Volume Down for 10-15 seconds - don't release when the phone initially reboots and gives the same error, keep them held down and download mode will appear. I have to hold for 11 seconds, a strangely unrounded number.
Hello Guys I have this Same issue Yesterday....... This happens when you flash outdated CF Autoroot. CF Autoroot Updated on 25/08/2016... Download it...
Fix for Stuck in Logo Screen
Just Click and Hold ...... Vol Down + Menu + Power Keys ...... DO NOT RELEASE. IT Will Restart. DONT release. It will restart again and you will be download mode.
i found this during the rooting process. its a bit different to older samsungs on the s7 / s7edge. YOU HAVE TO KEEP HOLD OF VOL DOWN + HOME + POWER until it enters download mode, which can be 20-25 seconds

Sm-g950f flashed with twrp without oem unlock

Hi guys I need your professional opinion the stupidity I done. I Flashed cf-auto root and without to enable OEM unlock i Flashed TWRP. After reboot the phone stuck on the Samsung logo.
Is the phone dead? Any chance to recover ?
Thanks for ur time
smpougi said:
Hi guys I need your professional opinion the stupidity I done. I Flashed cf-auto root and without to enable OEM unlock i Flashed TWRP. After reboot the phone stuck on the Samsung logo.
Is the phone dead? Any chance to recover ?
Thanks for ur time
Click to expand...
Click to collapse
Try flashing the stock firmware. I should work.
I have allready tried on odin says all ways fail. Then I tried with Samsung switch on recovery mode it says an unexpected error .
smpougi said:
I have allready tried on odin says all ways fail. Then I tried with Samsung switch on recovery mode it says an unexpected error .
Click to expand...
Click to collapse
try modded odin?
What is modded odin? Thanks
smpougi said:
What is modded odin? Thanks
Click to expand...
Click to collapse
Probably the Prince Cosmy edition.
Tried modded odin with the same result
have you tried button reset?
Make sure your Galaxy S8 is powered down.
Hold the Volume up, Bixby, and Power buttons at the same time, and keep them held down until you see the Samsung logo.
After 30 seconds, you should see the Android Recovery Menu. If your phone boots up as normal, try repeating the previous two steps.
Press the Volume down button four times, until Wipe data/Factory reset is highlighted. Select it using the Power button.
Press the Volume down button seven times until Yes — delete all user data is highlighted. Select it using the Power button, which triggers the reset process.
Once the factor reset is complete, press the Power button and select reboot system now.

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