Hey there,
I have a Pixel 3a, which refuses to start. After powering on, it directly hangs on the first google logo forever.
The device has stock rom and a locked bootloader.
I can still enter fastboot, but when I try to enter recovery mode from there I'm stuck at the google logo again.
Is there anything left I can do to revive the device?
- I cannot unlock the bootloader, because I need to the check this oem unlock setting which in turn is not possible whithout a working device. Or is there a different way?
- I cannot switch the A/B slot because the device is locked.
- I cannot flash something because the device is locked.
I'm grateful for any advice.
jimgodlike said:
Hey there,
I have a Pixel 3a, which refuses to start. After powering on, it directly hangs on the first google logo forever.
The device has stock rom and a locked bootloader.
I can still enter fastboot, but when I try to enter recovery mode from there I'm stuck at the google logo again.
Is there anything left I can do to revive the device?
- I cannot unlock the bootloader, because I need to the check this oem unlock setting which in turn is not possible whithout a working device. Or is there a different way?
- I cannot switch the A/B slot because the device is locked.
- I cannot flash something because the device is locked.
I'm grateful for any advice.
Click to expand...
Click to collapse
Hi there.
A couple of questions first:
Does it respond to any adb or fastboot commands?
Does it enter into Recovery or Rescue mode from Fastboot?
If yes, then your best bet is either https://pixelrepair.withgoogle.com/ or https://flash.android.com/
Both tools should work even with a locked bootloader, you just need Chrome and the USB driver.
Be warned tho, both tools will erase and factory reset your phone.
Related
Hi,
My phone went into a boot loop.
I can access the fastboot menu but the device is locked, I obviously now cannot enter developer options to unlock it
When means I can't unlock the bootloader, and without unlocking the bootloader I can't reflash the device. Bit of a loop of death
Any suggestions or is it a door wedge?
JOEBOUK said:
Hi,
My phone went into a boot loop.
I can access the fastboot menu but the device is locked, I obviously now cannot enter developer options to unlock it
When means I can't unlock the bootloader, and without unlocking the bootloader I can't reflash the device. Bit of a loop of death
Any suggestions or is it a door wedge?
Click to expand...
Click to collapse
Hello and welcome to XDA-developers!
You can follow this guide to flash stock firmware through fastboot. If you have any doudts just report!
Hello, I have problem with my softbricked Nexus 5.
phone is full stock
bootloader is locked
USB debugging is not enabled
Android 6.0.1
all buttons are working
USB socket is fine
Factory reset from recovery mode is not working - still bootlooping
My purpose is to bring it to live, but I am stuck. Due to locked bootloader I have to use LG Flash Tool. Some time ago I used it with my other Nexus 5 and it was fine - worked excellent. Now I want to do it again with other phone but I am stuck on start: Can't enter download mode (volume up+usb cable). When I am trying to enter to download mode,charging battery icon appears and after few seconds my phone is being recognized as MTP USB device in device manager. I thought it is a problem with the phone, but tried with another working Nexus and there is no difference - it looks like problem with phone-pc connection to me. I tried few cables (original samsung and nokia) and two pc's - no difference. Tried all USB ports etc. Clean reinstall (with registry keys delete) doesn't help, updated version 4.2 neither. Do you have any ideas how to fix it?
Download mode? Never heard of that on the Nexus 5. There is a fastboot mode for flashing stock ROMs and to unlock the bootloader.
I recommend unlocking the bootloader and using NRT to flash a stock ROM.
audit13 said:
Download mode? Never heard of that on the Nexus 5. There is a fastboot mode for flashing stock ROMs and to unlock the bootloader.
I recommend unlocking the bootloader and using NRT to flash a stock ROM.
Click to expand...
Click to collapse
I have NRT but problem is that to unlock bootloader I have to enable USB debugging - I can't do it with bootlooping phone.
Bootloader can be unlocked without enabling debugging as you are not running adb commands, you need to run fastboot commands.
audit13 said:
Download mode? Never heard of that on the Nexus 5. There is a fastboot mode for flashing stock ROMs and to unlock the bootloader.
I recommend unlocking the bootloader and using NRT to flash a stock ROM.
Click to expand...
Click to collapse
audit13 said:
Bootloader can be unlocked without enabling debugging as you are not running adb commands, you need to run fastboot commands.
Click to expand...
Click to collapse
Thanks! Can I do it with NRT also?
Easiest way to unlock the bootloader on a windows machine is to do this:
make sure that the necessary fast boot drivers are installed;
boot phone into fast boot mode by holding down volume up, volume down, and power;
connect the phone to the computer;
type "fastboot oem unlock" without the quotation marks and press enter key.
Unlocking will wipe the phone.
Once unlocked, you can flash a stock ROM using fastboot commands.
audit13 said:
Easiest way to unlock the bootloader on a windows machine is to do this:
make sure that the necessary fast boot drivers are installed;
boot phone into fast boot mode by holding down volume up, volume down, and power;
connect the phone to the computer;
type "fastboot oem unlock" without the quotation marks and press enter key.
Unlocking will wipe the phone.
Once unlocked, you can flash a stock ROM using fastboot commands.
Click to expand...
Click to collapse
Ok I did it. Do I have to proceed "fastboot reboot" command? when I am doing it it reboots and still bootlooping. When I enter bootloader it is locked again
If the bootloader relocks itself when the phone is rebooted, the memory chip is damaged and will need a motherboard replacement.
I already unlocked the bootloader, happens anything if I turn off oem unlock in developer settings or will the bootloader relock?
Maik_ said:
I already unlocked the bootloader, happens anything if I turn off oem unlock in developer settings or will the bootloader relock?
Click to expand...
Click to collapse
Turned it off once by accident but turned on again.. Nothing changed
I don't think anything changes unless u relock it via fastboot, which at that point as long as u can boot back into the OS, u can always unlock it again, relocking bootloader will format ur data and u will no long be rooted or have twrp installed
locking your bootloader with root etc installed can cause major problems so before doing that you should flash a stock firmware otherwise you will be locked out
Why would you want to do this? There is no benefit to it if you plan to stay rooted.
Need to find something to do. You bored
iElvis said:
Why would you want to do this? There is no benefit to it if you plan to stay rooted.
Click to expand...
Click to collapse
I want to disable developer options, but if I do that OEM-Unlock automatically turns off and I don't want to reboot because I dont want that I lock myself out.
Your cat will get knock up..........again!
Maik_ said:
I want to disable developer options, but if I do that OEM-Unlock automatically turns off and I don't want to reboot because I dont want that I lock myself out.
Click to expand...
Click to collapse
Just turning off Developer Options won't relock your bootloader. You can only do that manually in fastboot. But you'll also lose USB debugging, which means adb won't work anymore in case something goes wrong. (But leaving USB debugging on all the time isn't the best idea anyway.)
Hello everyone
I think I did that mistake
I have twrp installed on my phone Samsung SM-G532F . my phone was working just fine but I have locked the oem for no reason .
now when I turn off the device and tried to turn it on it shows { Custom binary blocked by FRP. (boot. img) }
and when I open recovery mode it shows { Custom binary blocked by FRP. (recovery. img) }
the download mode is working and shows that the FRP lock is on .
I tried to flash the stock recovery with odin but since the FRP is locked it failed .
the adb is not working because the device cannot boot , even the battery symbol when I plug my phone with a charger is not displayed and shows the error { Custom binary blocked by FRP. (boot. img) }
any ideas will help a lot .
omer123137 said:
Hello everyone
I think I did that mistake
I have twrp installed on my phone Samsung SM-G532F . my phone was working just fine but I have locked the oem for no reason .
now when I turn off the device and tried to turn it on it shows { Custom binary blocked by FRP. (boot. img) }
and when I open recovery mode it shows { Custom binary blocked by FRP. (recovery. img) }
the download mode is working and shows that the FRP lock is on .
I tried to flash the stock recovery with odin but since the FRP is locked it failed .
the adb is not working because the device cannot boot , even the battery symbol when I plug my phone with a charger is not displayed and shows the error { Custom binary blocked by FRP. (boot. img) }
any ideas will help a lot .
Click to expand...
Click to collapse
You cannot boot with a custom recovery and a locked bootloader. As to how to fix this, you need to ask in the Samsung forums. This is for OnePlus 6.
If you have a oneplus look in the forum for msmdownloadtool and follow the steps, you can revive your phone.
If your phone its a samsung, search in samsung forums for a tool to unbrick your phone.
iElvis said:
You cannot boot with a custom recovery and a locked bootloader. As to how to fix this, you need to ask in the Samsung forums. This is for OnePlus 6.
Click to expand...
Click to collapse
I was finally able to solve this issue with flashing the official firmware with odin . now I will never touch the oem unlock button ever again :laugh: . but thank you for your reply .
---------- Post added at 07:27 PM ---------- Previous post was at 07:22 PM ----------
Toni Moon said:
If you have a oneplus look in the forum for msmdownloadtool and follow the steps, you can revive your phone.
If your phone its a samsung, search in samsung forums for a tool to unbrick your phone.
Click to expand...
Click to collapse
I downloaded and flashed the official firmware with odin and it worked . thanks for the reply
I did this once on my OnePlus X, disabled oem unlocking in developer options. phone and recovery worked fine. I did a backup. Flashed a new rom to test it. The rom had AOSP recovery in the zip, overwriting twrp (opx has separate recovery partition). I flashed gapps affter the rom and the setup wizard was crashing so I could not boot in the home screen. Tried TWRP, its gone. Tried to boot to twrp via fastboot, oem locked. Had to do hard brick reset. Backup and data, gone.
TLDR, you should leave it on, unless you are on stock firmware.
After flash a rom you must flash twrp recovery again, restart in recovery and flash gapps and magisk
First of all you have to flash combination file associated with your device model through ap slot of odin.
Then your phone will turn on and you can access settings through which you can turn on oem unlock.
Then you can install your desired rom into your device
Sinankhan.official said:
First of all you have to flash combination file associated with your device model through ap slot of odin.
Then your phone will turn on and you can access settings through which you can turn on oem unlock.
Then you can install your desired rom into your device
Click to expand...
Click to collapse
This isn't a Samsung device.
Maik_ said:
I already unlocked the bootloader, happens anything if I turn off oem unlock in developer settings or will the bootloader relock?
Click to expand...
Click to collapse
I also accidentally turned off oem in rooted phone , Does my bootloader locked or I can safely reboot
I restored the stock firmware using Odin, but now I see that the bootloader is still unlocked.
When try to lock it again the system says: "If OEM unlock is turned off, your phone will be reset to factory default settings after restart. This will erase all of your data... " etc.
My question is: will the firmware be still in place? I don't mind everything being wiped, because most of it will be restored anyway when I login to Google and Samsung again.
SamarSS123 said:
I also accidentally turned off oem in rooted phone , Does my bootloader locked or I can safely reboot
Click to expand...
Click to collapse
No
so, i tried to unlock the bootloader of my phone it might succesfully unlocked as it showing in the developers option but here the catch so when i rebbot my device i get orange state eror but its not a big deal for me i guess but when i go flashboot mode using cmd commands like .adb reboot bootloader. my phone boots but it shows that the serial is not correct pls verify flashboot something like that for like a second and my phone boots normally showing 2 erors first serial no one and second is the orange state one after relmae booting screen .PLS HELP
FORGOT TO PASTE BOOLOADER IMG
y007oo said:
so, i tried to unlock the bootloader of my phone it might succesfully unlocked as it showing in the developers option but here the catch so when i rebbot my device i get orange state eror but its not a big deal for me i guess but when i go flashboot mode using cmd commands like .adb reboot bootloader. my phone boots but it shows that the serial is not correct pls verify flashboot something like that for like a second and my phone boots normally showing 2 erors first serial no one and second is the orange state one after relmae booting screen .PLS HELP
Click to expand...
Click to collapse
If the "orange state" is "Your device is unlocked and cannot be trusted", you will most likely have your bootloader unlocked.
LR7875 said:
If the "orange state" is "Your device is unlocked and cannot be trusted", you will most likely have your bootloader unlocked.
Click to expand...
Click to collapse
So what to do I need to lock my bootloader
No need to relock. What happens when you presses the button combination of fastboot mode (search Google)?
y007oo said:
So what to do I need to lock my bootloader
Click to expand...
Click to collapse
Take note that as soon as you re-lock the bootloader the bootloader simply gets forced to load phone's Stock ROM.
jwoegerbauer said:
Take note that as soon as you re-lock the bootloader the bootloader simply gets forced to load phone's Stock ROM.
Click to expand...
Click to collapse
Ohh well I guess I can use my phone like this only
My narzo 30a is in red state warning how can I fix it... Any one pls give me the solution for this? And mob is rebooting automatically within 5secs, even not able to go fastboot recovery mode... What can I do to fix it ?
I've recently bricked my device trying to install LineageOS, long story short I had to use MSM Tool in order to flash a new, stock ROM. Since I did that I am unable to unlock the bootloader: everytime I do the phone bricks with this following Yellow message on the screen: "upgrade download failed please check your download flow is right". After that I have to use the MSM Tool again to unbrick the Yellow text.
Any ideata how I might unlock the bootloader? Aside from that, the phone works fine.
EDIT: I managed to fix this by OEM updating my device to Android 11 and *then* unlocking the bootloader. Another issue has arisen now, though: whenever I try to boot TWRP from fastboot, the phone reboots and gets stuck in the "Fastboot Mode" OnePlus logo screen. Would anyone know how to fix this, or maybe is there a way to root your phone without using a custom recovery?
Karellen11 said:
I've recently bricked my device trying to install LineageOS, long story short I had to use MSM Tool in order to flash a new, stock ROM. Since I did that I am unable to unlock the bootloader: everytime I do the phone bricks with this following Yellow message on the screen: "upgrade download failed please check your download flow is right". After that I have to use the MSM Tool again to unbrick the Yellow text.
Any ideata how I might unlock the bootloader? Aside from that, the phone works fine.
EDIT: I managed to fix this by OEM updating my device to Android 11 and *then* unlocking the bootloader. Another issue has arisen now, though: whenever I try to boot TWRP from fastboot, the phone reboots and gets stuck in the "Fastboot Mode" OnePlus logo screen. Would anyone know how to fix this, or maybe is there a way to root your phone without using a custom recovery?
Click to expand...
Click to collapse
Yes you can ,,install thru boot loader with ADB and fastboot CMD. First you need to extract the boot.img from your oos rom, patch it in magisk app, then put it in your adb folder and run the cmd " fastboot flash boot boot.img .