Boot loop s6 g920f - Galaxy S6 Q&A, Help & Troubleshooting

Hi guys,
so here is the thing...my sister gave me s6 to fix it which i thought it would be pretty easy but...she got the phone from her friend who doesnt know much and i assume he went for rooting it but fail...at first, it was all stock and problem was on booting. It was an update screen followed by no command error(same screen after firmware installation - which that guy probably did)..Anyways, i wanted to enter recovery, do the reset and thats it, but i couldnt scroll up and down although volume up and down is working...so i installed twrp via odin and i can access it now... I have done the reset but nothing...it just randomly restarts after samsung logo and keeps going like that. Also very importamt thing you need to know is that all of thi cant be done without charger. Without charger phone is dead..So guys ,do you think it is hardware, or do i need to install proper firmware or something else.. Thank you and sorry for bad english

svetp said:
Hi guys,
so here is the thing...my sister gave me s6 to fix it which i thought it would be pretty easy but...she got the phone from her friend who doesnt know much and i assume he went for rooting it but fail...at first, it was all stock and problem was on booting. It was an update screen followed by no command error(same screen after firmware installation - which that guy probably did)..Anyways, i wanted to enter recovery, do the reset and thats it, but i couldnt scroll up and down although volume up and down is working...so i installed twrp via odin and i can access it now... I have done the reset but nothing...it just randomly restarts after samsung logo and keeps going like that. Also very importamt thing you need to know is that all of thi cant be done without charger. Without charger phone is dead..So guys ,do you think it is hardware, or do i need to install proper firmware or something else.. Thank you and sorry for bad english
Click to expand...
Click to collapse
Hi svetp,
I had the same problem. Whenever I tried to flash the Stock ROM things got worse, until in the end I had the same problem as you. Then I read that AOKP image cures almost always such problems - and it worked ! Don't do this if phon is still under warranty as it triggers the knox counter !
If you can still access download mode try the following:
download the latest TWRP file for your S6 model
download AOKP image for your S6 model
download GAPPS for your S6 model
enter download mode
flash TWRP with Odin, but un-tick "Auto-Reboot" in Odin
when completed go to recovery at once (don't let the phone try to boot normally, just "kill" phone and hold the buttons for download mode)
when in recovery (TWRP) start ADB software (if you don't know how google samsung galaxy S6 ADB for advice)
transfer the downloaded AOKP image and GAPPS to your phone (/sdcard is a nice place) via ADB
wipe cache in TWRP
install image and GAPPS
wipe cache and reboot your phone
everything should be normal by then
Good luck !
Peter

Related

Help! Galaxy S2 won't boot (Phone--!--PC)

Hey, i am new here i used to get helps lot in this forum but now i am facing a problem that i didn't found a solution for it yet..
first off i tried to change from android 2.3.6 to 2.3.5 (Arabic support) using Odin v1.83 when i put the .tar file into PDA then i run it. gave me failed and the phone won't work again when i restarted it gave me result are like this : Phone--!--PC
please help me i cannot do anything.. i tried to remove the battery using usb cable go to recovery mode,,, download mode but nothing it keep appearing even it i turned off the phone just in one click to power button it appear again.. i am going to crazy and the phone has warranty expired please is there anyway to solve this problem?
I don't know if your phone is the same, but with my Nexus if stuck in bootloop I can plug the usb cable in and use adb to enter command "adb reboot bootloader" and get to fastboot and flash the stock images. Maybe you can try something like that. That's why I love the nexus I thought I bricked it a couple times but I always got back to stock images. or if you have a cwm restore you can get to that once in fastboot.
Thanks for your reply! but where i can find stock images?? and can i make it without formatting everything on it? plus when i did that i wasn't have the sd card inside it and without a sim card also
i found on the web that i need to install default kernel.. i did that and put it to bootloader in Odin and the operation succeed but now i am facing looping on Samsung logo with yellow triangle ... see the picture.. it always loop can't do anything tried recovery mode download mode but nothing.. is there any fast solution please? i beg you guys please
Try to wipe everything trough recovery, and flash another rom.
Just google for Heimdall recovery
Does Heimdall perform anything different than Odin?
try to install leaked original rom ics for gs2. i try it and yellow triangle is out

PLEASE HELP ME with galaxy S2 SHW-M250K Boot problem

Please guys, my galaxy S2 SHW-M20K (Korean) is in trouble.
I bought it from a 2nd hand shop , and it was runing Android 4.1.2 Jelly Bean (rooted stock rom). I had no problem with it till today when I tried to install "CWM Recovery", After searching the web i found a post with two files that supposedly could do the task. These files are:
1. CWM_KT_M250K.tar
2. Tegrak-Kernel-Build-39-for-SHW-M250K-UE18.tar
Using Odin, I triedd the first file but it couldn't work, and the phone could not boot so i downloaded the "rooted factory firmware" and flashed the phone. Everything was ok. Later I tried the second file. Again the phone could not boot and stuck at the logo with a yellow triangle. After waiting for about 5 minutes I tried to shut it down by pressing the power button it did'nt respond. (Now this is a point that I regret), I removed the battery as a way of forcing to turn it off.
Now my phone cannot boot. It doesn't respond to power button, neither does it allow me to enter recovery mode nor download mode. But When i connect to the charger or pc, it start charging and keeps cutting off the charging frequently. But it only allows me to enter download mode when connected to pc. When I tried to flash the "rooted factory firmware", again, the flashing goes smoothly but when the phone starts rebooting it fails as if there is a power cut. Is my battery damaged? Can someone give me a guide on how to fix it?
I need your help gus, I am not an expert in the rootings and roms,
Pardon My English. It's a foreign language to me.
Gombyz said:
Please guys, my galaxy S2 SHW-M20K (Korean) is in trouble.
I bought it from a 2nd hand shop , and it was runing Android 4.1.2 Jelly Bean (rooted stock rom). I had no problem with it till today when I tried to install "CWM Recovery", After searching the web i found a post with two files that supposedly could do the task. These files are:
1. CWM_KT_M250K.tar
2. Tegrak-Kernel-Build-39-for-SHW-M250K-UE18.tar
Using Odin, I triedd the first file but it couldn't work, and the phone could not boot so i downloaded the "rooted factory firmware" and flashed the phone. Everything was ok. Later I tried the second file. Again the phone could not boot and stuck at the logo with a yellow triangle. After waiting for about 5 minutes I tried to shut it down by pressing the power button it did'nt respond. (Now this is a point that I regret), I removed the battery as a way of forcing to turn it off.
Now my phone cannot boot. It doesn't respond to power button, neither does it allow me to enter recovery mode nor download mode. But When i connect to the charger or pc, it start charging and keeps cutting off the charging frequently. But it only allows me to enter download mode when connected to pc. When I tried to flash the "rooted factory firmware", again, the flashing goes smoothly but when the phone starts rebooting it fails as if there is a power cut. Is my battery damaged? Can someone give me a guide on how to fix it?
I need your help gus, I am not an expert in the rootings and roms,
Pardon My English. It's a foreign language to me.
Click to expand...
Click to collapse
As u mentioned, I think that your phone has gone to a Soft Brick. I don't know much about the Korean build, so Google it to solve the Soft Brick. Try flashing the stock rom via odin but I don't recommend it since it may cause your phone to be hard bricked if not done properly.
So go to the service centre, you'll get more help there
Sushant Rohan said:
As u mentioned, I think that your phone has gone to a Hard Brick. I don't know much about the Korean build, so Google it to solve the Hard Brick. But it is very hard to solve
Click to expand...
Click to collapse
I thank you sir for responding to this. From what you have said, I think the best decision is to take it to Samsung service center. (For I have tried to google it but I couldn't get a solution). I would also like to know if it is repairable, and about the cost, is it worth repairing or should I think of buying a new phone?
I am stranded.
Gombyz said:
Please guys, my galaxy S2 SHW-M20K (Korean) is in trouble.
I bought it from a 2nd hand shop , and it was runing Android 4.1.2 Jelly Bean (rooted stock rom). I had no problem with it till today when I tried to install "CWM Recovery", After searching the web i found a post with two files that supposedly could do the task. These files are:
1. CWM_KT_M250K.tar
2. Tegrak-Kernel-Build-39-for-SHW-M250K-UE18.tar
Using Odin, I triedd the first file but it couldn't work, and the phone could not boot so i downloaded the "rooted factory firmware" and flashed the phone. Everything was ok. Later I tried the second file. Again the phone could not boot and stuck at the logo with a yellow triangle. After waiting for about 5 minutes I tried to shut it down by pressing the power button it did'nt respond. (Now this is a point that I regret), I removed the battery as a way of forcing to turn it off.
Now my phone cannot boot. It doesn't respond to power button, neither does it allow me to enter recovery mode nor download mode. But When i connect to the charger or pc, it start charging and keeps cutting off the charging frequently. But it only allows me to enter download mode when connected to pc. When I tried to flash the "rooted factory firmware", again, the flashing goes smoothly but when the phone starts rebooting it fails as if there is a power cut. Is my battery damaged? Can someone give me a guide on how to fix it?
I need your help gus, I am not an expert in the rootings and roms,
Pardon My English. It's a foreign language to me.
Click to expand...
Click to collapse
Download stock firmware (like xxxx.tar.md5 full Odin package) of ur device ,enter into Download mode of ur device & flash stock firmware with Odin.
Try this...

[Q] 915FY Stuck Not Booting

Hi All,
I have a Note Edge 915FY. Tried to upgrade it to stock 5.0.1 via sammobile.com
It is now stuck. It just shows the Samsung Galaxy Note Edge screen and then flashes to "Recovery Booting" and just stays stuck there! For hours!
I have also tried to download 4.4.4 from sammobile.com and flash that but same thing happens. I cannot go into recovery, only into download mode.
I also tried to root it using CF-Autoroot but that failed.
Furthermore, I have tried flashing CWM and TWRP but both do nothing.
I am absolutely stuck! And I really need help!
PS: The phone has no warranty now, so I have no fallback! Please HELP!!!!!
I didn't have any luck flashing CF-AutoRoot when I was on Lollipop, I used CWM and it worked fine.
If your'e stuck go into ODIN mode (Power, Home + Down Vol) and then click up when prompted,
make sure your pc has samsung drivers installed
Download the stock 5.0.1 BOC2 ROM from this XDA page
http://forum.xda-developers.com/note-edge/development/rom-stock-tw-lollipop-t3019721
(You can easily up to BOC6 or a hacked rom later)
Make sure to set Odin as shown in the picture from that same url above
http://dl-1.va.us.xda-developers.com/3/1/4/6/2/6/9/odin.PNG?key=DHp6BTdAsBVpoENIbV4DMw&ts=1431888807
This should work without any issues, I spent some cycles getting bootloops via cf-auto root and some funny ROM behaviour, I was always able to
use this to get me back to stock, root using cwm method then deploy whichever debloated rom you like !
G
iqsoft said:
Hi All,
I have a Note Edge 915FY. Tried to upgrade it to stock 5.0.1 via sammobile.com
It is now stuck. It just shows the Samsung Galaxy Note Edge screen and then flashes to "Recovery Booting" and just stays stuck there! For hours!
I have also tried to download 4.4.4 from sammobile.com and flash that but same thing happens. I cannot go into recovery, only into download mode.
I also tried to root it using CF-Autoroot but that failed.
Furthermore, I have tried flashing CWM and TWRP but both do nothing.
I am absolutely stuck! And I really need help!
PS: The phone has no warranty now, so I have no fallback! Please HELP!!!!!
Click to expand...
Click to collapse
iqsoft said:
Hi All,
I have a Note Edge 915FY. Tried to upgrade it to stock 5.0.1 via sammobile.com
It is now stuck. It just shows the Samsung Galaxy Note Edge screen and then flashes to "Recovery Booting" and just stays stuck there! For hours!
I have also tried to download 4.4.4 from sammobile.com and flash that but same thing happens. I cannot go into recovery, only into download mode.
I also tried to root it using CF-Autoroot but that failed.
Furthermore, I have tried flashing CWM and TWRP but both do nothing.
I am absolutely stuck! And I really need help!
PS: The phone has no warranty now, so I have no fallback! Please HELP!!!!!
Click to expand...
Click to collapse
Did you solve?
Try this (It works for me when my Note Edge was bricked):
On samsung kies 3 select "Tools --> Firmware Upgrade and Initialization" and follow the instructions.
It will ask for phone model (SM-N915FY or other) and for Serial Number S/N, this number is indicated under the battery (make attention to insert the number near S/N not near SSN).
After this It will ask to connect the phone in Download Mode and after it will start to download the firmware (more than 1GB) and will start the installation.
Boot into recovery , power + button + sound UP and clear cache and all reset.
Re do lollipop and you should be fine.
Happened to me but i worked it out after the panic stage....
lucarp78 said:
Did you solve?
Try this (It works for me when my Note Edge was bricked):
On samsung kies 3 select "Tools --> Firmware Upgrade and Initialization" and follow the instructions.
It will ask for phone model (SM-N915FY or other) and for Serial Number S/N, this number is indicated under the battery (make attention to insert the number near S/N not near SSN).
After this It will ask to connect the phone in Download Mode and after it will start to download the firmware (more than 1GB) and will start the installation.
Click to expand...
Click to collapse
I have tried this but weird enough for me, after I input the model number followed by the S/N number in Kies, I got a message "Initialization is not supported for SM-N915FY"
Its kind of fishy since the S/N input only appears after I gave Kies the Model number. If N915FY was not supported, why would they make me open up the back cover and look up for the S/N, make me type it letter by letter and then tell me 'Ok, no luck for you!'.
Any explanation and/or solution for me please? I only have 14 days of extensive researching experience, still left with a 'baseband unknown and null imei" note edge with no prior efs backup .
I think we got the same problems bro, i was very proud note edge user till two days a go, when sudden problems start to happen like restart, slowdown, loop, freeze and shoot of, later no more reboot from system menu that it just shoots of, and then latter hard to start, i had to take out battery and push start + home + volume down buttons about one minute and put back battery just to bring in to download mode and then volume down to start the in to system, and after screen is off it shots down again and again, and last time i put in to freeze to start it to see any missed calls or messages, but sens last night no way i can start any more!
I used to update apps from google and samsung store, and i em curious at this latest update, overnight was lot of data use, even in settings it was setup not to sync any data and not to use any data in background, only Viber app, so i assume there most have been sent to our phones some malware update to brick our old lovely phones, it is very possible.
Now, all i can do is to go to market to find broken screen note edge to purchase and replace motherboard, and i hope i find one not sim-locked.
So try to use Odin v3.07, and download the firmware from here https://www.sammobile.com/samsung/galaxy-note-edge/firmware/#SM-N915FY ans flash it, hope you get back your phone, and if you need to root it, use TWRP v3.02.tar flash with odin to...so the rest of procedure i guess you know!
Today i found on local phone shop+ service one note edge with a bit broken screen, but it did start and stack on kind of "recovery booting", i realized the service or the owner did try to flash sort of room on it but not completed, i bought the phone sm-n915FY model for 30.euro, and now i just transferred the motherboard to my own phone and flashed the TWRP v3.02.tar successfully and let it charge first, bcz there was only 05% battery, and later i will see if i can restore the twrp backup, and i will be careful with this update apps from google and Samsung store the gmail, androidwebsecurity**, maps and browser.
Well, my phone works now, it's just the TWRP backup is not working correct, even i modified folder of the backup, i had pssword in backup and now when i restore seek pasword, i type correct, but the phone did encrypt it. so i have to start with new room setup.

SM-N915V stuck in boot loop

Hey all first post, I have a verizon note edge stuck in a boot loop. I've tried everything I could find online myself. Clearing the cache, doing a factory reset , and finally reflashing the original software. The reflashing through ODIN was successful but did not fix the issue. The phone still is stuck in the boot loop. It now makes it a bit further in the process to the point where you begin the initialization , please wait while we prepare your phone screen and select a language, sometimes you will hear a loud click noise when right as it restarts. Other times nothing at all. No matree what the phone will only stay on for a few seconds before restating. Does anyone have any suggestions? Thank you! !!
Found any solutions yet?
Hey mate, i have similar problem. Please let me know if you've found a solution. Thanks
Qu1nter said:
Hey all first post, I have a verizon note edge stuck in a boot loop. I've tried everything I could find online myself. Clearing the cache, doing a factory reset , and finally reflashing the original software. The reflashing through ODIN was successful but did not fix the issue. The phone still is stuck in the boot loop. It now makes it a bit further in the process to the point where you begin the initialization , please wait while we prepare your phone screen and select a language, sometimes you will hear a loud click noise when right as it restarts. Other times nothing at all. No matree what the phone will only stay on for a few seconds before restating. Does anyone have any suggestions? Thank you! !!
Click to expand...
Click to collapse
Which fw have u flashed
R u able to get to the optimizing apps screen
If u still have a problem try this
Get into download mode
Flash twrp
Clear or format everything other than ur micro sd and internal storage
Now reboot into download mode
Flash stock fw downloaded from sansung website
Wait for some time it'll take some time to get things done
Ur phone might restart a few times
w8 brick recovery said:
Which fw have u flashed
R u able to get to the optimizing apps screen
If u still have a problem try this
Get into download mode
Flash twrp
Clear or format everything other than ur micro sd and internal storage
Now reboot into download mode
Flash stock fw downloaded from sansung website
Wait for some time it'll take some time to get things done
Ur phone might restart a few times
Click to expand...
Click to collapse
I cant remember exactly which firmware i used from sammobile.com/firmwares/database/SM-N915V
I think it may have been version 4.4.4 of android or version 6.0.1. Im fairly certain that i used the older version thinking it would be best to roll it back further. You mentioned flashing TWRP. i am unfamiliar with this. I searched it on this site and came up with this twrp.me/devices/samsunggalaxynote4edgevzw.html Would i want to use the odin install method? Thank you so much for your assistance with this. This has been a nightmare

Bricked when returning to stock (No command)

Hey guys,
decided to flash the latest DBT Firmware via Odin to get back to stock completely. (G930FXXU3ESA3)
After flashing the firmware through Odin the phone reboots and then installs an update and erases data (blue background).
After a second reboot I end up with a blue screen and the simple error: "No command".
I can not get into recovery, as I end up with the same error message wether booting into recovery or the system.
I CAN however get into downloadmode and flash twrp, after that I can boot into system but I want to keep the whole system vanilla, without TWRP.
Installing TWRP keeps the device encrypted, no matter what. I can wipe, then install no-verity-encrypt and as soon as I reboot the device is encrypted again.
Ive tried: Different Firmware Version (December 2018), 3 different cables, different odin versions.
Edit: attached an Image of the message that Pops up after about 30sec on the no command screen.
Ok, so your device will take UK Unbranded BTU firmware. You can get it from a few sources and even direct from Samsung servers with Samtool.
Forget all that flashing TWRP and non verify nonsense, if you can get into download mode you can flash firmware, obviously make sure the firmware downloaded is not corrupt etc.
I've used Odin V10 -13 to flash BTU and every version flashed it correctly. Sometimes you do get that "installing update" and then "erasing" but that's fine just leave the phone for a few minutes it should eventually reboot normally.
FLASH No verity.zip
VIA TWRP
https://forum.xda-developers.com/attachment.php?attachmentid=4490455&d=1525176288
cooltt said:
Ok, so your device will take UK Unbranded BTU firmware. You can get it from a few sources and even direct from Samsung servers with Samtool.
Forget all that flashing TWRP and non verify nonsense, if you can get into download mode you can flash firmware, obviously make sure the firmware downloaded is not corrupt etc.
I've used Odin V10 -13 to flash BTU and every version flashed it correctly. Sometimes you do get that "installing update" and then "erasing" but that's fine just leave the phone for a few minutes it should eventually reboot normally.
Click to expand...
Click to collapse
Just tried the latest BTU with Odin 3.13.1, same problem. Its reboots into the blue screen, applying system update to about 32% and then switches to "Erasing". After about 1min it reboots, shows "Installing System update" for a second and I end up with "No command" again. And from there on it just constantly reboots into the "No command" screen.
This seems like the same problem. I can not enter stock recovery to wipe though...
Things ive tried so far:
- Different firmware Versions (all oreo since downgrading is impossible)
- Formating with pit files
- Different Odin Versions
- Unplugging and replugging the battery
- Installing TWRP, wiping data and then installing stock recovery through TWRP
Did u try in Odin nand erase and repatition option? If not try it ( make sure u have pit file extracted or downloaded from the net)
Scorpionea said:
Did u try in Odin nand erase and repatition option? If not try it ( make sure u have pit file extracted or downloaded from the net)
Click to expand...
Click to collapse
Did a efs backup through TWRP just in case, then flashed the latest DBT firmware with nand erase -> still the same problem.
I can only guess that this was caused by using a backup from another phone back when Oreo came out, this probably messed something up really badly. Very weird, im kinda lost.
Killuminati91 said:
Just tried the latest BTU with Odin 3.13.1, same problem. Its reboots into the blue screen, applying system update to about 32% and then switches to "Erasing". After about 1min it reboots, shows "Installing System update" for a second and I end up with "No command" again. And from there on it just constantly reboots into the "No command" screen.
This seems like the same problem. I can not enter stock recovery to wipe though...
Things ive tried so far:
- Different firmware Versions (all oreo since downgrading is impossible)
- Formating with pit files
- Different Odin Versions
- Unplugging and replugging the battery
- Installing TWRP, wiping data and then installing stock recovery through TWRP
Click to expand...
Click to collapse
Ok, from the no command screen do the following.
Hold power until phone switches off, then press power+home+volume up. The phone should now boot into original recovery screen. Select "wipe/factory reset" and then reboot device. Job done.
cooltt said:
Ok, from the no command screen do the following.
Hold power until phone switches off, then press power+home+volume up. The phone should now boot into original recovery screen. Select "wipe/factory reset" and then reboot device. Job done.
Click to expand...
Click to collapse
Tried that, recovery is simply not working. If I hold vol - + power + home to restart and switch immediatly to vol + I boot into the usual blue screen with No command. I even tried unplugging the battery to shut off the phone and boot into recovery from there but that is not working either. Sorry should have stated that more clearly.
If I flash TWRP however, I can easily boot into TWRP with the recovery button combo.
Killuminati91 said:
Tried that, recovery is simply not working. If I hold vol - + power + home to restart and switch immediatly to vol + I boot into the usual blue screen with No command. I even tried unplugging the battery to shut off the phone and boot into recovery from there but that is not working either. Sorry should have stated that more clearly.
If I flash TWRP however, I can easily boot into TWRP with the recovery button combo.
Click to expand...
Click to collapse
Ok it's a tricky one so one more thing I would suggest is download and install Samsung smart switch on your PC, place the phone in download mode plug it into lap top and choose emergency software recovery in smart switch
Edit. I just remembered before that try this button combo from the no command screen volume up+volume down+power.
cooltt said:
Ok it's a tricky one so one more thing I would suggest is download and install Samsung smart switch on your PC, place the phone in download mode plug it into lap top and choose emergency software recovery in smart switch
Edit. I just remembered before that try this button combo from the no command screen volume up+volume down+power.
Click to expand...
Click to collapse
Hmmh. Searched a lot for the version that still supported emergency recovery. (which seems to be 4.0). If I go into download mode, start smartswitch and try to use emergency recovery there is nothing for me to select.
Volume up + down and power gives me the terminal like look which I attached in the first post with all those error messages.
Killuminati91 said:
Hmmh. Searched a lot for the version that still supported emergency recovery. (which seems to be 4.0). If I go into download mode, start smartswitch and try to use emergency recovery there is nothing for me to select.
Volume up + down and power gives me the terminal like look which I attached in the first post with all those error messages.
Click to expand...
Click to collapse
The EFS partition is corrupt or blank, it's the only logical explanation but the TWRP back up should solve that, without looking at it my self and running some commands i cant help your further.
cooltt said:
The EFS partition is corrupt or blank, it's the only logical explanation but the TWRP back up should solve that, without looking at it my self and running some commands i cant help your further.
Click to expand...
Click to collapse
TWRP backup was created after I ran into problems though. Ive checked some more things and it seems like the serial number that is displayed (in combination rom and or Z3X) is not the same SN that is printed on the back of the phone. Could this be related? And how would I go about changing it back to the one on the sticker? The IMEI is correct.
Had someone who was more into the whole thing contact me here but when I wanted to "donate" only half of what he was asking he refused to help me.
Killuminati91 said:
TWRP backup was created after I ran into problems though. Ive checked some more things and it seems like the serial number that is displayed (in combination rom and or Z3X) is not the same SN that is printed on the back of the phone. Could this be related? And how would I go about changing it back to the one on the sticker? The IMEI is correct.
Had someone who was more into the whole thing contact me here but when I wanted to "donate" only half of what he was asking he refused to help me.
Click to expand...
Click to collapse
Thats because he's a scammer. Never donate to get your phone fixed! Donate to Rom developers and things you like but never to get the phone fixed, they're usually lying.
The serial number should be the same ON the phone as displayed IN phone. Tell me the story about the phone, how did you get it? what region? where are you? what firmware was installed? Can you still flash a ROM with TWRP? Can you check OEM unlock?
---------- Post added at 04:53 PM ---------- Previous post was at 04:51 PM ----------
nmnmnmnmnmnmnmnmnm
Pretty sure he was just trying to remote repair for a price, which is not allowed on XDA. Would obviously donated on my own if he actually fixed it.
Bought the phone unlocked directly from a provider (simply - germany - dbt - g930f) back in 2016. Tripped kn0x after a few months, installed a few custom roms until Oreo came out.
This is where I messed up I think: I used a TWRP backup from someone else that he had shared here on XDA, which probably included his /efs too.
Since then I had constant connection problems, weak internet connection, dropped calls and so on.
Broke my screen and then decided to repair it myself. Bought a new frame, screen, battery, usb-port, earpiece and vibrator - managed to assemble all of that.
I can install all latest official firmwares (bootloader 3) through Odin. If I leave it at that I have no recovery and end up with the initially shown screen and "No command".
If i install TWRP from there and simply root with magisk or apply dm-verity-fix I can boot into the stock firmware with everything working.
I can also install ROMs. Just going completely vanilla is not possible anymore. OEM Unlock is checked, USB debugging works.
Edit: What is also astounding: If I flash version DBT-G930FXXS3ERHD-20180918145033 (oldest possible Oreo Version) I can enter recovery and do a factory reset and wipe cache.
If I do that however I am stuck at the Galaxy S7 Logo, not even bootlooping.
Killuminati91 said:
This is where I messed up I think: I used a TWRP backup from someone else that he had shared here on XDA, which probably included his /efs too.
Click to expand...
Click to collapse
awww.....come on man you should have said this at the start! Of course you can't use someone else's EFS data, it's unique to your handset. Custom Rom's patch some but not all EFS data that's why they work and in your case that's why Stock firmware isn't going too.
Anyway if this is the problem (and i suspect it is) there is only one way to fix it with Octopus box which can write all the important info back onto the EFS. Your IMEI, Serial, Mac address etc. Odin reads the info from the EFS prior to nand write start, if the phone serials don't match it will always fail at some point.
You can install a custom via twrp but it will not work correctly due to EFS data miss match. Octopus box is your answer.
cooltt said:
awww.....come on man you should have said this at the start! Of course you can't use someone else's EFS data, it's unique to your handset. Custom Rom's patch some but not all EFS data that's why they work and in your case that's why Stock firmware isn't going too.
Anyway if this is the problem (and i suspect it is) there is only one way to fix it with Octopus box which can write all the important info back onto the EFS. Your IMEI, Serial, Mac address etc. Odin reads the info from the EFS prior to nand write start, if the phone serials don't match it will always fail at some point.
You can install a custom via twrp but it will not work correctly due to EFS data miss match. Octopus box is your answer.
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Dang it. Thank you! Off to find someone who can do this via remote access or in Berlin.
Same situation right now with my S7. Damn.
Hi everyone. Did you guys find any way to resolve this issue? i have exactly the same issue here.. but in my case i cannot use twrp cuz i never installed it before... the issue happened right after i tried to enter the recovery mode by pressing the buttons...
my wife's galaxy s7 touch screen was acting weird and i tried to get into the recovey mode..which is pretty muh easy to do... but once i tried the no command msg came up and now i have exatly the same case as the guy that opened this thread....also done everything hes done....any clue about this anyone?
id appreciate some help..
thanks in advance
Diego Boffa
Anyone?
I have exactly the same error with "fail to open recovery_cause(No such file or directory)#
My Tablet is now stuck with a blue "android dead" screen saying "No command".
My history to disaster:
- i've recovered a "broken" Samsung Tablet (sm-T585) with corrupted file system via
* Download Mode works -> TWRP install -> Mount option -> use ADB to recreate EFS partition -> re-flash stock image (android 8) with odin
- device works fine
- then i've noticed it can only be used with a certain cell provider (o2)
- then i've tried to flash an older version of the stock rom (android 7) due some problems in Android 8 (often some slow downs while operating)
- this doesn't work, the flash don't start
- therefore nothing should be happend, or?
- then i've can't get anymore in the stock recovery to wipe all data
...therefore the mess began:
* i can't flash TWRP anymore
* i can't flash stock recovery anymore
* i only can get into download mode
* i can only flash a certain rom type successfully (green PASS within odin), but with the final stuck with boot loop, with the mentioned blue screen
* other rom version can't flashed
I hopefully ask you guys here, if anyone can help me?
Any help would be very appreciated ...

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