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Long story short I messed up my i9020T while trying to apply the HSDPA hack (wouldn't get past Google boot logo, CWM couldn't mount partitions), and after a series of failed flashes I'm now at the point where stock 2.3.4 seems to be working fine, but I can't unlock the bootloader because it gets stuck after selecting the Yes prompt, and I can't properly enter Download mode to flash via ODIN (I don't get the yellow triangle, only part of the unlock-bootloader-prompt screen).
Do I have any options left? Any way to reflash completely using another method? Fastboot seems to work fine except for the inability to unlock the bootloader.
I'm at my wit's end, appreciate any help.
Try reinstalling the Samsung USB drivers. To get into download mode easily, hold down both volume keys and plug the phone into USB. It should go into download mode right away.
Run Odin as administrator and flash the stock images.
Thanks, but that didn't work either. Even the stock ROM and locked bootloader eventually failed, so something tells me there might have been a mechanical problem after all. Currently waiting for a Best Buy refurb replacement.
Hi,
I have refereed to earlier threads for same problem but could not resolve the issue. That's why I am initiating a new thread.
I was trying to unlock my htc one s and was trying to install a custom rom. But I don't know which step goes wrong. Now my phone is not starting and I am not even able to go to recovery mode by volume button. When I try to start the phone it stuck on 'this build is for development purpose only'.
Please help.
Regards,
Meher Chandan
It is kind of difficult to help since you are not telling what you have already done...
However, I'm just guessing that your phone may be in a reboot loop with fast reboot/poweroff enabled. This means it is never really powered off. Try to hold down the power button when you see the HTC screen, at least for 10 seconds (more may be required). That should force a hard shutdown. After that, you should be able to boot into fastboot, and so, into recovery.
FWIW, I've installed CM 12.1 and I still got the red warning message. It does not bother me, however.
I got similar case in the old day. Boot up the phone first to wakeup it and force it power off and immediately connect to PC when the screen goes blank.
Try "c:\>adb reboot bootloader" now, sometimes it will fail and report device not found(then unplug the usb cable, reboot it and power off and connect to PC again), you might be need to try many times to make it success(I'v tried like 10 times) and once you get it working, it will reboot into bootloader and now fastboot(c:\>fastboot devices) and recovery also working.
meherchandan said:
Hi,
I have refereed to earlier threads for same problem but could not resolve the issue. That's why I am initiating a new thread.
I was trying to unlock my htc one s and was trying to install a custom rom. But I don't know which step goes wrong. Now my phone is not starting and I am not even able to go to recovery mode by volume button. When I try to start the phone it stuck on 'this build is for development purpose only'.
Please help.
Regards,
Meher Chandan
Click to expand...
Click to collapse
There is boot.IMG file on your ROM.zip (you have installed) extract it in your fastboot folder and reboot your phone into boot loader and then goto your PC command promot and flash boot.IMG (fastboot flash boot boot.img) from fast boot folder.
Sent from my One S using Tapatalk
So I have a recent issue that I have not seemed to resolve. Today, under normal use, my pixel's screen went black and I have not been able to power it back on. I was using the pixel dust rom when the issue happened. I have booted into twrp and tried to factory reset but the screen even went black during the wipe. After that, I booted into the bootloader and attempted to flash google's factory image. The phone actually stays on during the bootloader session. It seemed that I was able to flash the factory rom but once I tried to reboot, the same thing happens. The boot animation will play but that's as far as it gets until the screen goes black once again.
If anyone has had this issue or if anyone has an idea on how to resolve this issue, please respond quickly.
Much Appreciated!
After the screen goes black, are you still able to communicate with the device over adb/fastboot? Have you tried reflashing the factory image (make sure the checksum is correct!)? If you put the phone in the refrigerator for a bit, will it last longer before going black (i.e., bad solder)?
post-mortem said:
After the screen goes black, are you still able to communicate with the device over adb/fastboot? Have you tried reflashing the factory image (make sure the checksum is correct!)? If you put the phone in the refrigerator for a bit, will it last longer before going black (i.e., bad solder)?
Click to expand...
Click to collapse
So during fastboot, the screen actually doesn't go black. I am still able to remain communication and That is when I tried flashing the factory image. How do you make sure that the checksum is correct? I didn't receive any errors during the flash indicating that it didn't flash properly.
If you're using Windows, Hashtab is a good, free checksum program with a GUI.
Download
Info/Review
On Google's image download page, copy the SHA-256 listed, and compare it to what you have locally (which you used to flash onto your phone).
how to boot into twrp? almost the same issue to you, adb cant find my phone.
jcd173339 said:
So I have a recent issue that I have not seemed to resolve. Today, under normal use, my pixel's screen went black and I have not been able to power it back on. I was using the pixel dust rom when the issue happened. I have booted into twrp and tried to factory reset but the screen even went black during the wipe. After that, I booted into the bootloader and attempted to flash google's factory image. The phone actually stays on during the bootloader session. It seemed that I was able to flash the factory rom but once I tried to reboot, the same thing happens. The boot animation will play but that's as far as it gets until the screen goes black once again.
If anyone has had this issue or if anyone has an idea on how to resolve this issue, please respond quickly.
Much Appreciated!
Click to expand...
Click to collapse
bush911 said:
how to boot into twrp? almost the same issue to you, adb cant find my phone.
Click to expand...
Click to collapse
If adb cant detect your phone, it looks like the only way that you're going to boot into twrp is through the bootloader mode (if you had it previously installed). Holding down volume down and power will get you into bootloader and then using the volume buttons, you can cycle through the options until you find "recovery". Pressing the power button will select that option.
post-mortem said:
After the screen goes black, are you still able to communicate with the device over adb/fastboot? Have you tried reflashing the factory image (make sure the checksum is correct!)? If you put the phone in the refrigerator for a bit, will it last longer before going black (i.e., bad solder)?
Click to expand...
Click to collapse
It looks like your freezer method works. Putting it in the freezer actually gets the phone to boot completely into google's factory image. its usuable for about a minute until the problem of freezing and turning off reoccurs. It feels like the phone warms up while running so maybe i have a hardware problem rather than software.
I seem to have the exact same problem with my pixel 32gb, my device was not rooted, nor did I had any custom recovery but the bootloader was unlocked. The issue happened one day while I was browsing the device went black right infront of me. It was not like I did a dirty flash/mod or something. I'm able to detect my pixel via fastboot, able to flash the factory image no problem, but does not boot up after successful completion of the flashing, it just goes black after "google" logo. Anyone found a solution yet??
thank you sir, I have twrp installed previously. but the screen doesnt turn on so I can't choose the recovery model. and try to hold the power button for a while the phone will become warm. no other response:crying:
jcd173339 said:
If adb cant detect your phone, it looks like the only way that you're going to boot into twrp is through the bootloader mode (if you had it previously installed). Holding down volume down and power will get you into bootloader and then using the volume buttons, you can cycle through the options until you find "recovery". Pressing the power button will select that option.
Click to expand...
Click to collapse
Thufail19 said:
I seem to have the exact same problem with my pixel 32gb, my device was not rooted, nor did I had any custom recovery but the bootloader was unlocked. The issue happened one day while I was browsing the device went black right infront of me. It was not like I did a dirty flash/mod or something. I'm able to detect my pixel via fastboot, able to flash the factory image no problem, but does not boot up after successful completion of the flashing, it just goes black after "google" logo. Anyone found a solution yet??
Click to expand...
Click to collapse
Maybe try locking the bootloader? I might try to do that since you and i both are experiencing the same problem with an unlocked bootloader. But i can't see why that would impact anything.
Hi,
SITUATION : I just had a big problem with my OP6. First of all, I was on Oreo stock Rom and I decided to upgrade to Pie by flashing .zip via TWRP. Everything goes well, but after some days of use and for some reasons I wanted to roll-back to Oreo and I flashed the downgrade .zip but this time via Local upgrade. Again, everything goes well but when trying to flash TWRP via Fastboot, I used "fastboot boot TWRP.img" and phone booted into it. Then, BEFORE flashing the TWRP.zip file I accidentally changed the slot (b to a) and rebooted to system.
PROBLEM : Now, the device is stucked on a black screen with withe notification LED on, and whatever the situation. Bootloader isn't accessible anymore. None of the buttons combination work properly. I don't know what to do. I looked for MSM software but do I need to access Bootloader to use it ? It's possible to power off the device (white LED turn off), but nothing more.
Thanks for any future advices
power off ur device !!!
open msm software and connect ur phone through usb and press up volume + power button and u will see it getting connected to the msm software and leave it till ur phone starts booting ito OOS 5.1.5
Here is the Link to the MsmDownloadTool V4.0:
https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892
With this Tool, you get your Phone working again.
StandBrik said:
Hi,
SITUATION : I just had a big problem with my OP6. First of all, I was on Oreo stock Rom and I decided to upgrade to Pie by flashing .zip via TWRP. Everything goes well, but after some days of use and for some reasons I wanted to roll-back to Oreo and I flashed the downgrade .zip but this time via Local upgrade. Again, everything goes well but when trying to flash TWRP via Fastboot, I used "fastboot boot TWRP.img" and phone booted into it. Then, BEFORE flashing the TWRP.zip file I accidentally changed the slot (b to a) and rebooted to system.
PROBLEM : Now, the device is stucked on a black screen with withe notification LED on, and whatever the situation. Bootloader isn't accessible anymore. None of the buttons combination work properly. I don't know what to do. I looked for MSM software but do I need to access Bootloader to use it ? It's possible to power off the device (white LED turn off), but nothing more.
Thanks for any future advices
Click to expand...
Click to collapse
I hope u fixed it by now, but if you still haven't fixed it yet, you can go back to slot b by using this commands "fastboot --set-active=B" without the quotes
Because I messed up my slot a, so i used that command to boot using slot b and it worked. So, if the problem is with your slot a and everything with your slot b is fine, then you just need to change to slot b with that command and all should go well :highfive:
just noticed that you're having a problem accessing the bootloader. First, make sure your device is not connected to your pc or anything. Then, whether your device is off or stuck in that black screen, just hold vol up and power off at the same time and wait until it eventually boots into the bootloader mode.
Problem solved with MSM software. Thanks everyone. If someone has the same issue. Just download MSM software and use the following guide :
https://forum.xda-developers.com/oneplus-5t/how-to/oneplus-5t-unbricking-tool-confirmation-t3733012
It is actually quite impossible to totally hardbrick a device like this one.
Cheers
Glad to hear that.
Just in case i got into that problem, could you lead me to the files you downloaded since the ones in that link seem to be for OnePlus 5
In my situation, I have a black screen, and a fixed blue LED.
I want to put the LineageOS ROM, but it's impossible, even though it performs the installation of the ROM correctly, when you restart it that happens, and then it doesn't even let you install or start the TWRP again.
It only remains to use MSMDownloadTool, to return to the Stock rom.
Hello.
I did something wrong while trying to flash TWRP on my pixel 2, I am now stuck at the bootloader, and I cannot boot System or Recovery. While at the bootloader screen, it says Device State : unlocked. If I try to get to download mode, it says "ERROR: Operation Denied". If I try to go into recovery, it says "ERROR: Slot Unbootable: Load Error". If I try "Start", I get the same error message.
Also, adb or fastboot don't seem to be able to "see" the pixel connected to the computer. I believe my cables are good since I was able to flash Magisk and reflash the whole system with them before bricking it.
Can anyone help?
Thanks!
stanelie said:
Hello.
I did something wrong while trying to flash TWRP on my pixel 2, I am now stuck at the bootloader, and I cannot boot System or Recovery. While at the bootloader screen, it says Device State : unlocked. If I try to get to download mode, it says "ERROR: Operation Denied". If I try to go into recovery, it says "ERROR: Slot Unbootable: Load Error". If I try "Start", I get the same error message.
Also, adb or fastboot don't seem to be able to "see" the pixel connected to the computer. I believe my cables are good since I was able to flash Magisk and reflash the whole system with them before bricking it.
Can anyone help?
Thanks!
Click to expand...
Click to collapse
happened to my walleye too , and managed to bring it back to life . check this thread for a possible solution. https://forum.xda-developers.com/pixel-2/help/december-factory-image-to-broken-t3875213
Thanks!
I missed that thread while researching this issue.
I will try these things when I get back from work next week.
Thanks again!
stanelie said:
Thanks!
I missed that thread while researching this issue.
I will try these things when I get back from work next week.
Thanks again!
Click to expand...
Click to collapse
Just as a reference for anyone else who needs the fix and can't be bothered opening another thread.
SOLUTION: At the menu where it is stuck and saying device fail etc, plug in your usb cable to the mobile, press and hold the POWER button for 10 seconds, it will now recognise your phone under fastboot.
Once that is cleared, it's pretty much straightforward flashing latest pixel 2 image via fastboot and problem solved.
sidenote: Issue came with anyone who tried to flash december security updates and above as of what I heard.
I will try that, thanks.
So, several things :
Holding down the power button had no effect other than restarting the boot menu, but Fastboot never became available.
Opening up the phone and disconnecting the battery and reconnecting it made Fastboot available again. This would be in line with other users that let the phone battery discharge completely before regaining fastboot access.
Sidenote : opening up this phone is not for the faint of heart. I managed to damage something on the motherboard doing so (probably a static electricity discharge), the screen ended up displaying gibberish. I was able to salvage my phone by replacing the motherboard. I had ordered a replacement motherboard when I thought all was lost with no fastboot, and I had it on hand. Expensive little sucker...
stanelie said:
Hello.
I did something wrong while trying to flash TWRP on my pixel 2, I am now stuck at the bootloader, and I cannot boot System or Recovery. While at the bootloader screen, it says Device State : unlocked. If I try to get to download mode, it says "ERROR: Operation Denied". If I try to go into recovery, it says "ERROR: Slot Unbootable: Load Error". If I try "Start", I get the same error message.
Also, adb or fastboot don't seem to be able to "see" the pixel connected to the computer. I believe my cables are good since I was able to flash Magisk and reflash the whole system with them before bricking it.
Can anyone help?
Thanks!
Click to expand...
Click to collapse
Same thing happened to me except I never even tried to root. Just pulled the phone out of my pocket, and the little Android dude was belly up. It's showing device locked - and although I had it in Dev. mode from weeks back (thought USB Debugging was enabled) it fails to respond to adb commands, boot-loader mode, etc.
...Looks like Google laid an egg with this one.
Pixel 2 - "ERROR: Slot Unbootable: Load Error"
If you get the above error you will find that you cannot boot into recovery and the phone stays in the bootloader screen each time you try to start the phone. If your bootloader is unlocked you might be able to recover your phone to flash a stock image and revive. My problem started when I tried to restore a nandroid backup after trying out Android Q beta 1. I got the error mentioned above.
Most of the people recommended that I get a replacement from Google support as they had tried everything but it didn't work. Well right here in XDA Pixel 2 forum there is a solution waiting to be used. I am reproducing it from the post titled
"December factory image seems to have broken fastboot enumeration"
Quote
A possible way to resurrect a bricked Pixel 2...
Hey guys, I have just been able to get mine alive. The device started to be recognized (USB/fastboot) after about 10 unsuccessful attempts to start the system: "Start", from bootloader.
So what exactly happened and what I did:
1. Bricked a Pixel 2.
2. It started into bootloader and showed the "slot unbootable" error.
3. The device was not recognized by any of my machines at all, lsusb did not show anything new in the system, and, respectively, fastboot did not see the device.
4. The default option in the bootloader is "Start" if I remember correctly. So I just pressed the power button and did not release it until I noticed a vibration. It were about 10 unsuccessful attempts of system loading before that vibration.
5. Right after that vibration I connected a generic (NONAME) USB-C <-> USB-A cable to both the device and my Linux machine, and fortunately the device was recognized by the system and fastboot was able to detect the device correctly. So I flashed the a factory image, and it went just fine.
Unquote
Let me confirm that this works. I kept the power button down while the phone was connected via USB to the PC for at least 5 mins. During several reboots suddenly I got a beep from the PC which indicated that ADB was working. I flashed a stock image and voila the pixel 2 is back in operation.
Hope this helps several other people who might have this problem.
ashokabs said:
If you get the above error you will find that you cannot boot into recovery and the phone stays in the bootloader screen each time you try to start the phone. If your bootloader is unlocked you might be able to recover your phone to flash a stock image and revive. My problem started when I tried to restore a nandroid backup after trying out Android Q beta 1. I got the error mentioned above.
Most of the people recommended that I get a replacement from Google support as they had tried everything but it didn't work. Well right here in XDA Pixel 2 forum there is a solution waiting to be used. I am reproducing it from the post titled
"December factory image seems to have broken fastboot enumeration"
Quote
A possible way to resurrect a bricked Pixel 2...
Hey guys, I have just been able to get mine alive. The device started to be recognized (USB/fastboot) after about 10 unsuccessful attempts to start the system: "Start", from bootloader.
So what exactly happened and what I did:
1. Bricked a Pixel 2.
2. It started into bootloader and showed the "slot unbootable" error.
3. The device was not recognized by any of my machines at all, lsusb did not show anything new in the system, and, respectively, fastboot did not see the device.
4. The default option in the bootloader is "Start" if I remember correctly. So I just pressed the power button and did not release it until I noticed a vibration. It were about 10 unsuccessful attempts of system loading before that vibration.
5. Right after that vibration I connected a generic (NONAME) USB-C <-> USB-A cable to both the device and my Linux machine, and fortunately the device was recognized by the system and fastboot was able to detect the device correctly. So I flashed the a factory image, and it went just fine.
Unquote
Let me confirm that this works. I kept the power button down while the phone was connected via USB to the PC for at least 5 mins. During several reboots suddenly I got a beep from the PC which indicated that ADB was working. I flashed a stock image and voila the pixel 2 is back in operation.
Hope this helps several other people who might have this problem.
Click to expand...
Click to collapse
I don't even know how to thank you. I almost had a heart attack watching my Pixel bricked. Thanks man!
Save my day! I just keep pressing power button and fastboot response finally!
Can this be done if the device is locked?
_Kalyan said:
I don't even know how to thank you. I almost had a heart attack watching my Pixel bricked. Thanks man!
Click to expand...
Click to collapse
Does ur bootloader locked or unlocked?
---------- Post added at 11:36 AM ---------- Previous post was at 11:36 AM ----------
ashokabs said:
If you get the above error you will find that you cannot boot into recovery and the phone stays in the bootloader screen each time you try to start the phone. If your bootloader is unlocked you might be able to recover your phone to flash a stock image and revive. My problem started when I tried to restore a nandroid backup after trying out Android Q beta 1. I got the error mentioned above.
Most of the people recommended that I get a replacement from Google support as they had tried everything but it didn't work. Well right here in XDA Pixel 2 forum there is a solution waiting to be used. I am reproducing it from the post titled
"December factory image seems to have broken fastboot enumeration"
Quote
A possible way to resurrect a bricked Pixel 2...
Hey guys, I have just been able to get mine alive. The device started to be recognized (USB/fastboot) after about 10 unsuccessful attempts to start the system: "Start", from bootloader.
So what exactly happened and what I did:
1. Bricked a Pixel 2.
2. It started into bootloader and showed the "slot unbootable" error.
3. The device was not recognized by any of my machines at all, lsusb did not show anything new in the system, and, respectively, fastboot did not see the device.
4. The default option in the bootloader is "Start" if I remember correctly. So I just pressed the power button and did not release it until I noticed a vibration. It were about 10 unsuccessful attempts of system loading before that vibration.
5. Right after that vibration I connected a generic (NONAME) USB-C <-> USB-A cable to both the device and my Linux machine, and fortunately the device was recognized by the system and fastboot was able to detect the device correctly. So I flashed the a factory image, and it went just fine.
Unquote
Let me confirm that this works. I kept the power button down while the phone was connected via USB to the PC for at least 5 mins. During several reboots suddenly I got a beep from the PC which indicated that ADB was working. I flashed a stock image and voila the pixel 2 is back in operation.
Hope this helps several other people who might have this problem.
Click to expand...
Click to collapse
Works on bootloader state locked or not?
SoKa1993 said:
Does ur bootloader locked or unlocked?
---------- Post added at 11:36 AM ---------- Previous post was at 11:36 AM ----------
Works on bootloader state locked or not?
Click to expand...
Click to collapse
If the boot loader is locked look for a script for unlocking the bootloader from recovery or bootloader state. I did find it but cannot remember. My bootloader was unlocked so I did not have to use it.
ashokabs said:
Pixel 2 - "ERROR: Slot Unbootable: Load Error"
If you get the above error you will find that you cannot boot into recovery and the phone stays in the bootloader screen each time you try to start the phone. If your bootloader is unlocked you might be able to recover your phone to flash a stock image and revive. My problem started when I tried to restore a nandroid backup after trying out Android Q beta 1. I got the error mentioned above.
Most of the people recommended that I get a replacement from Google support as they had tried everything but it didn't work. Well right here in XDA Pixel 2 forum there is a solution waiting to be used. I am reproducing it from the post titled
"December factory image seems to have broken fastboot enumeration"
Quote
A possible way to resurrect a bricked Pixel 2...
Hey guys, I have just been able to get mine alive. The device started to be recognized (USB/fastboot) after about 10 unsuccessful attempts to start the system: "Start", from bootloader.
So what exactly happened and what I did:
1. Bricked a Pixel 2.
2. It started into bootloader and showed the "slot unbootable" error.
3. The device was not recognized by any of my machines at all, lsusb did not show anything new in the system, and, respectively, fastboot did not see the device.
4. The default option in the bootloader is "Start" if I remember correctly. So I just pressed the power button and did not release it until I noticed a vibration. It were about 10 unsuccessful attempts of system loading before that vibration.
5. Right after that vibration I connected a generic (NONAME) USB-C <-> USB-A cable to both the device and my Linux machine, and fortunately the device was recognized by the system and fastboot was able to detect the device correctly. So I flashed the a factory image, and it went just fine.
Unquote
Let me confirm that this works. I kept the power button down while the phone was connected via USB to the PC for at least 5 mins. During several reboots suddenly I got a beep from the PC which indicated that ADB was working. I flashed a stock image and voila the pixel 2 is back in operation.
Hope this helps several other people who might have this problem.
Click to expand...
Click to collapse
I have same problem. I use Pixel 2 and Fedora. My question is, what i exactly should do? I mean the steps. I didn't get that beep from my laptop. But I got the vibration when I hold the power button when it's not connected to USB. Please Help me.
Sorry my english isn't that good.