[HELP} P20 Bricked after downgrade - Huawei P20 Questions & Answers

So i was on 9.0.0.197 and tried to downgrade with tools on this forum to 8.x so that i could get official OTA fro Huawei
ITs now just a black screen and responds to fastboot commands.
I can still flash most things like system, etc
Not sure what it is that I need to try and flash to get the screen abck on and the system operational
Any idea?

Quick answer. Send the phone back to warranty and the second you get it back put a for sale sign on it and get a different brand

jackching said:
Quick answer. Send the phone back to warranty and the second you get it back put a for sale sign on it and get a different brand
Click to expand...
Click to collapse
Why sell it though

RanSauce said:
Why sell it though
Click to expand...
Click to collapse
No need to sell its still a cool phone

You need software called DC unlocker (Its paid like 19€ for 3 days) and you will need to disassemble your phone to short-circuit testpoint. I had same issue with my P10

jackching said:
Quick answer. Send the phone back to warranty and the second you get it back put a for sale sign on it and get a different brand
Click to expand...
Click to collapse
Pretty crappy piece of advice actually... Pretty trolly.

It's simple. Just buy a type c to otg and flash the android oreo using firmware upgrade mode and dload method.

Grumps said:
So i was on 9.0.0.197 and tried to downgrade with tools on this forum to 8.x so that i could get official OTA fro Huawei
ITs now just a black screen and responds to fastboot commands.
I can still flash most things like system, etc
Not sure what it is that I need to try and flash to get the screen abck on and the system operational
Any idea?
Click to expand...
Click to collapse
I've just done the same thing, did you manage to fix your phone?

ahac85 said:
I've just done the same thing, did you manage to fix your phone?
Click to expand...
Click to collapse
Hi there is a way to fix with DC unlocker if you open your phone. I sent mine to huawei under warranty and they replaced the main board.

Grumps said:
Hi there is a way to fix with DC unlocker if you open your phone. I sent mine to huawei under warranty and they replaced the main board.
Click to expand...
Click to collapse
Phone sent to huawei repair centre, got a free repair done, new imei and locked bootloader...

Related

How to unlock bootloader and install best ROM?

Hi there, been looking around but i find some old posts, wanted to use the safest way possible, i just bought a Huawei P9 and would like to know wich ROM is the best to use and how can i safely unlock my bootloader?
Thank you in advance.
already tried this :
http://forum.xda-developers.com/p9/how-to/how-to-safely-unlock-bootloader-p9-t3369499
but dc unlocked won't detect my phone, installed Hisuit for drivers, all good, but dc won't detect it, and the method via browser says i am from europe.
hfmls said:
already tried this :
http://forum.xda-developers.com/p9/how-to/how-to-safely-unlock-bootloader-p9-t3369499
but dc unlocked won't detect my phone, installed Hisuit for drivers, all good, but dc won't detect it, and the method via browser says i am from europe.
Click to expand...
Click to collapse
http://www.ministryofsolutions.com/p/huawei-bootloader-unlock.html
best method and cheapest to unlock bootloader,only send your phone information,and you will get your code after 1 day
already paid for dc unlocked, but it won't detect my phone :S
hfmls said:
already paid for dc unlocked, but it won't detect my phone :S
Click to expand...
Click to collapse
me also,so i follow the link above
spring80 said:
me also,so i follow the link above
Click to expand...
Click to collapse
damn, i don't understand, maybe it's because i have windows 10? i don't know.
i just activated OEM, debug, programmer mode, installed hisuite,and nothing :|
in fastboot dc unlockder detects some info, but not when smartphone is booted into android
ok i got it!
we have to go into manufacture mode!
https://www.youtube.com/watch?annot...&feature=iv&src_vid=U4tyT-noOaA&v=Lgph755EbKE

Bricked (unlocked) P20 Pro replaced under warranty (UK)

Guys
I managed to brick my P20 Pro flashing an update. The phone was unlocked and, according to Huawei), out of warranty but I chanced my arm and sent it back for a warranty repair as it would not switch on again. The replacement is in the post. I wont get to unlock the bootloader again unless they bypass Huawei but I get my phone back.
So don't lose hope if you brick your phone flashing, it's worth a punt at getting a warranty repair.
did you tell them you had tried flashing a different rom on it - if so you were very lucky
walkerx said:
did you tell them you had tried flashing a different rom on it - if so you were very lucky
Click to expand...
Click to collapse
I'm not that silly. Just said it's not turning on, as it wasnt.
maddoguk said:
I'm not that silly. Just said it's not turning on, as it wasnt.
Click to expand...
Click to collapse
- at least they didn't work out you had tried flashing it as they try to claim once you unlock the device the warranty is void or there is no marker like there is on samsung devices.
walkerx said:
did you tell them you had tried flashing a different rom on it - if so you were very lucky
Click to expand...
Click to collapse
walkerx said:
- at least they didn't work out you had tried flashing it as they try to claim once you unlock the device the warranty is void or there is no marker like there is on samsung devices.
Click to expand...
Click to collapse
They only have the IMEI check, that should have flagged that the phone had been unlocked but guess they didn't check.
Under European law, thankfully we are still covered (just), unlocking the bootloader is not a reason to invalidate a warranty if the phone has a hardware fault within 6 months. Maybe they don't want that fight?
maddoguk said:
They only have the IMEI check, that should have flagged that the phone had been unlocked but guess they didn't check.
Under European law, thankfully we are still covered (just), unlocking the bootloader is not a reason to invalidate a warranty if the phone has a hardware fault within 6 months. Maybe they don't want that fight?
Click to expand...
Click to collapse
if the consumer can prove there was a manufacturing fault that caused the problem they are entitled to a repair for to upto 6 years after purchase in england (5 years scotland). We are also covered if a standard update from a manufacturer causes our devices to fail because of the update.
How can you be out of warranty when the phone just came out? Lol
jaju123 said:
How can you be out of warranty when the phone just came out? Lol
Click to expand...
Click to collapse
because huawei void the warranty if you unlock the device
Just curious, what exactly were you trying to flash ?
mrabcx said:
Just curious, what exactly were you trying to flash ?
Click to expand...
Click to collapse
as per OP they were trying to flash an update manually.
walkerx said:
as per OP they were trying to flash an update manually.
Click to expand...
Click to collapse
I've been flashing phones for years and very careful, but HRUpater failed part way through and bricked the phone. Would not turn on at all. It was probably hardware waiting to fail but too much of a coincidence.

Completely bricked - no recovery & fastboot (Updated the thread about my experience)

Completely bricked - no recovery & fastboot (Updated the thread about my experience)
I tried to re lock the boot-loader with 'fastboot relock' which made the deice completely bricked.
That was a foolish thing to do but now I can't access either stock recovery or fastboot. I just get the USB connected sound when I plugin the USB but stuck on boot logo. I ran out of ideas, any suggestions ???
In short, I can't access recovery/fastboot either with hardware keys or commands. Totally screwed it in a hurry.
I don't have a backup phone right now to take/make calls. Any urgent help is appreciated.
UPDATE
I tried all sorts of things but there isn't any free tool which can do things when FRP is locked and phone is bricked for Huawei.
I'm here to say about the ****ty service of Huawei/Honor and the way I bought back the device to life.
I submitted this out of warranty device to official service center 1 month back and kept calling them every 2 days to check if they were able to flash the firmware but they continuously failed. Guess what ? Thy didn't even know how to boot the device into fastboot with test point and had no idea about ADB drivers. I had to revisit them after 2 weeks to teach them about test-point boot which they confirmed after calling them repeatedly. After booting into fastboot, for unlocking the FRP of the device I own and have the bill on my own name- They demanded my complete identity proofs for submitting it to the company to get the unlock code. They didn't even accept the photocopy of the blurred out personal details on Identity proof and shouted back at me to send the copy which contains every single detail of mine including address, personal identification number which is linked to my bank accounts etc. I sent them the photocopy of the proof with no real use. They ask me to come down again to check if I could help them in flashing firmware using their basic tools. Finally, they returned the device and they claimed it as a motherboard fault. FFS this was the first company I ever encountered which couldn't recover their own device and pushes service guys to claim it as a motherboard issue(Yes! Terms of the company says so which is accepted by the service guy).
I bought the device back home and used DC Pheonix! Paid 19 Euros for DC Pheonix & HCU timed license and flashed the firmware within 5 minutes. BOOM! Everything back to normal. This was the device which was declared as a motherboard issue by the company which sold it and got repaired by an unofficial software within 5 minutes.
Gave this device to my mom for temporary use and bought the POCO few weeks back. Neither going back to Huawei/Honor nor allowing my acquittances to purchase such useless devices from a company who can't recover their own phones and locks down boot-loaders forever to steal customers data.
Kindly help @Ramesh006 @shashank1320 @vovan1982
sreekantt said:
Kindly help @Ramesh006 @shashank1320 @vovan1982
Click to expand...
Click to collapse
this is hard brick. You can try to flash the service firmware. If the Service Firmware is not flashed, then no one will help you.
EML-L29 C432B152 http://androidhost.ru/98b
EML-L29 C782C133 http://androidhost.ru/98a
I have C605, C33, AL00, TL00, C55, C109, C25, C45 Services Firmware.
vovan1982 said:
this is hard brick. You can try to flash the service firmware. If the Service Firmware is not flashed, then no one will help you.
EML-L29 C432B152 http://androidhost.ru/98b
EML-L29 C782C133 http://androidhost.ru/98a
I have C605, C33, AL00, TL00, C55, C109, C25, C45 Services Firmware.
Click to expand...
Click to collapse
I have a BLN - L22 with the recent oreo firmware in hand. Dload method doesn't work. HWOTA and all other tools won't work too as the phone can't boot into fastboot to give commands.
sreekantt said:
I have a BLN - L22 with the recent oreo firmware in hand. Dload method doesn't work. HWOTA and all other tools won't work too as the phone can't boot into fastboot to give commands.
Click to expand...
Click to collapse
Try erecocery or service centre if still in warranty.
shashank1320 said:
Try erecocery or service centre if still in warranty.
Click to expand...
Click to collapse
Out of warranty sadly.
Nothing is accessible in the phone except the boot logo, force restart. Forcing it into recovery & fastboot just presents the same logo screen again. I'm currently waiting for the battery to drain off and present a different screen as few users suggested in search results.
vovan1982 said:
this is hard brick. You can try to flash the service firmware. If the Service Firmware is not flashed, then no one will help you.
EML-L29 C432B152 http://androidhost.ru/98b
EML-L29 C782C133 http://androidhost.ru/98a
I have C605, C33, AL00, TL00, C55, C109, C25, C45 Services Firmware.
Click to expand...
Click to collapse
shashank1320 said:
Try erecocery or service centre if still in warranty.
Click to expand...
Click to collapse
I managed to cold boot into fastboot when phone is out of battery. Sadly, Bootloader is relocked and FRP is locked due to the foolish command I gave. Can't find a way to boot into e recovery to try this method mentioned here https://forum.xda-developers.com/mate-9/how-to/funky-huawei-erecovery-solution-100-t3620165/page6
shashank1320 said:
Try erecocery or service centre if still in warranty.
Click to expand...
Click to collapse
No. This is non-warranty replacement of the motherboard, because there was a relock
vovan1982 said:
No. This is non-warranty replacement of the motherboard, because there was a relock
Click to expand...
Click to collapse
Anyways it's out of warranty So, it's just a paper weight now ??
Looks like really bad situation. Still I don't understand how did the FRP lock happened as there wasn't any google account and Huawei account in phone and I expected just bootloader lock.
FRP Lock
Can't boot into E recovery
Looks like the end for Honor 6x days.
sreekantt said:
Anyways it's out of warranty So, it's just a paper weight now ??
Looks like really bad situation. Still I don't understand how did the FRP lock happened as there wasn't any google account and Huawei account in phone and I expected just bootloader lock.
FRP Lock
Can't boot into E recovery
Looks like the end for Honor 6x days.
Click to expand...
Click to collapse
Sorry, I thought it was P20 (EML). You can use the test-point and firmware dgtks with DC Phoenix.
sreekantt said:
Anyways it's out of warranty So, it's just a paper weight now ??
Looks like really bad situation. Still I don't understand how did the FRP lock happened as there wasn't any google account and Huawei account in phone and I expected just bootloader lock.
FRP Lock
Can't boot into E recovery
Looks like the end for Honor 6x days.
Click to expand...
Click to collapse
Connect USB, immediately volume up key and see if it boots to erecocery
shashank1320 said:
Connect USB, immediately volume up key and see if it boots to erecocery
Click to expand...
Click to collapse
Absolutely no. It gets into fast boot if I press volume down.
sreekantt said:
Absolutely no. It gets into fast boot if I press volume down.
Click to expand...
Click to collapse
Look onto DC unlocker Phoenix. It can write to the device in fastboot mode even though bootloader and frp is locked
jhorne917 said:
Look onto DC unlocker Phoenix. It can write to the device in fastboot mode even though bootloader and frp is locked
Click to expand...
Click to collapse
I'm considering that as an option if the service centre charges me way more than 19 Euros(Cost of DC Phoenix & HCU client). I will be handing them the device this weekend. .
If you have access to fastboot, then all is not lost.
What statuses are now on the fastboot? FRP & Unlock
ubohex said:
If you have access to fastboot, then all is not lost.
What statuses are now on the fastboot? FRP & Unlock
Click to expand...
Click to collapse
Bootloader - Relock
FRP - lock
No google, huawei accounts & pass key.
Can't boot into E recovery, normal recovery & normal fastboot.
I can coldboot into fastboot when battery drains completely.
sreekantt said:
Bootloader - Relock
FRP - lock
Click to expand...
Click to collapse
1. you need to unlock the bootloader again
2. Flash recovery twrp
3. And then I recommend flashing the custom firmware (resurection) in it to unlock the FRP, and then sew anything else.
Отправлено с моего LLD-L31 через Tapatalk
ubohex said:
1. you need to unlock the bootloader again
2. Flash recovery twrp
3. And then I recommend flashing the custom firmware (resurection) in it to unlock the FRP, and then sew anything else.
Отправлено с моего LLD-L31 через Tapatalk
Click to expand...
Click to collapse
We can only unlock the bootloader if FRP is unlocked which is not the case here. Anyways, I gave the device to the service center and don't care about it anymore. Most probably those guys blatantly state it as a motherboard issue and I have to eventually unlock it with DC pheonix in the end and donate the device to anyone.
I'm here to say about the ****ty service of Huawei/Honor and the way I bought back the device to life.
I submitted this out of warranty device to official service center 1 month back and kept calling them every 2 days to check if they were able to flash the firmware but they continuously failed. Guess what ? Thy didn't even know how to boot the device into fastboot with test point and had no idea about ADB drivers. I had to revisit them after 2 weeks to teach them about test-point boot which they confirmed after calling them repeatedly. After booting into fastboot, for unlocking the FRP of the device I own and have the bill on my own name- They demanded my complete identity proofs for submitting it to the company to get the unlock code. They didn't even accept the photocopy of the blurred out personal details on Identity proof and shouted back at me to send the copy which contains every single detail of mine including address, personal identification number which is linked to my bank accounts etc. I sent them the photocopy of the proof with no real use. They ask me to come down again to check if I could help them in flashing firmware using their basic tools. Finally, they returned the device and they claimed it as a motherboard fault. FFS this was the first company I ever encountered which couldn't recover their own device and pushes service guys to claim it as a motherboard issue(Yes! Terms of the company says so which is accepted by the service guy).
I bought the device back home and used DC Pheonix! Paid 19 Euros for DC Pheonix & HCU timed license and flashed the firmware within 5 minutes. BOOM! Everything back to normal. This was the device which was declared as a motherboard issue by the company which sold it and got repaired by an unofficial software within 5 minutes.
Gave this device to my mom for temporary use and bought the POCO few weeks back. Neither going back to Huawei/Honor nor allowing my acquittances to purchase such useless devices from a company who can't recover their own phones and locks down boot-loaders forever to steal customers data.
Sreekantt said:
I'm here to say about the ****ty service of Huawei/Honor and the way I bought back the device to life.
I submitted this out of warranty device to official service center 1 month back and kept calling them every 2 days to check if they were able to flash the firmware but they continuously failed. Guess what ? Thy didn't even know how to boot the device into fastboot with test point and had no idea about ADB drivers. I had to revisit them after 2 weeks to teach them about test-point boot which they confirmed after calling them repeatedly. After booting into fastboot, for unlocking the FRP of the device I own and have the bill on my own name- They demanded my complete identity proofs for submitting it to the company to get the unlock code. They didn't even accept the photocopy of the blurred out personal details on Identity proof and shouted back at me to send the copy which contains every single detail of mine including address, personal identification number which is linked to my bank accounts etc. I sent them the photocopy of the proof with no real use. They ask me to come down again to check if I could help them in flashing firmware using their basic tools. Finally, they returned the device and they claimed it as a motherboard fault. FFS this was the first company I ever encountered which couldn't recover their own device and pushes service guys to claim it as a motherboard issue(Yes! Terms of the company says so which is accepted by the service guy).
I bought the device back home and used DC Pheonix! Paid 19 Euros for DC Pheonix & HCU timed license and flashed the firmware within 5 minutes. BOOM! Everything back to normal. This was the device which was declared as a motherboard issue by the company which sold it and got repaired by an unofficial software within 5 minutes.
Gave this device to my mom for temporary use and bought the POCO few weeks back. Neither going back to Huawei/Honor nor allowing my acquittances to purchase such useless devices from a company who can't recover their own phones and locks down boot-loaders forever to steal customers data.
Click to expand...
Click to collapse
Same here in VN, many people have same problem and Huawei 's solution is changing mainboard....lol....which is now same price with an old Honor6x

How To Guide [Soft Unbrick] How to Flash the Stock Firmware in Realme GT Neo 2 [bitra][Fastboot Mode]

Update> Currently I recommend this method only for unbrick, if you are going to change regions or install stock use this new method: Here
>> Need bootloader unlocked <<
If you want to unbrick or flash stock, you must download the package corresponding to your device and RUI version
1. Download the .zip package and extract the .ofp file
​Packages:​​India​​RUI 2.0 Android 11 A.07: Download​RUI 3.0 Android 12 C.03: Download​​---------------​​Europe​​RUI 2.0 Android 11 A.06: Download​RUI 3.0 Android 12 C.02: Download​---------------​​China​​RUI 2.0 Android 11 A.06: Download​​---------------​​Russia, Middle East, Africa, Latin America, and other regions​​RUI 2.0 Android 11 A.02: Download​RUI 3.0 Android 12 C.02: Download​---------------​
2. Download and Install OppoRealme-OFP-Flash Tool: Here
3. Place the extracted .ofp file in the same folder as the program.
4. Run OppoRealme-OFP-Flash
5. When running if you have placed only one .ofp file in the folder it will automatically select it.
6. Choose the region you want to install, if you don't know you can search on google country code, or go in automatic mode by adb (if your cell phone isn't bricked).
7. Then it will ask if you want to keep some partitions (if you're doing it for bootloader lock you can't keep any).
8. Accept the terms and then plug the device into fastboot mode.
9. Done!
Note: after this process if you want to lock the bootloader, restart again in fastboot mode and type the command "fastboot flashing lock"
At last! Thank you! Will try it as soon as I have some free time to do it!
One quick question please. So let's say I want to go from Europe to India rom. I need to unlock bootloader and start the process you described. Do I need to take backup any partition in order not to lose IMEI or something? And after flashing to relock bootloader only type "fastbook flashing lock"? Some people were saying there is no official method to relock the bootloader again that's why I'm asking.
Malediktion said:
One quick question please. So let's say I want to go from Europe to India rom. I need to unlock bootloader and start the process you described. Do I need to take backup any partition in order not to lose IMEI or something? And after flashing to relock bootloader only type "fastbook flashing lock"? Some people were saying there is no official method to relock the bootloader again that's why I'm asking.
Click to expand...
Click to collapse
almost that, you don't lose the imei, you lock the bootloader I've already tested and proven it, but I don't recommend doing it without the rom that comes on your device.if you want to test, but it can happen hardbrick.
SrCDA said:
almost that, you don't lose the imei, you lock the bootloader I've already tested and proven it, but I don't recommend doing it without the rom that comes on your device.if you want to test, but it can happen hardbrick.
Click to expand...
Click to collapse
You mean lock the bootloader with the rom that my device has already? So if it's europe it has to stay europe and do the lock if I understand correctly.
Malediktion said:
You mean lock the bootloader with the rom that my device has already? So if it's europe it has to stay europe and do the lock if I understand correctly.
Click to expand...
Click to collapse
That's right, I don't know if blocking with a system from another region would work, it could even work, but it's risky to test, only if you have 10usd to pay for the hard unbrick.
SrCDA said:
That's right, I don't know if blocking with a system from another region would work, it could even work, but it's risky to test, only if you have 10usd to pay for the hard unbrick.
Click to expand...
Click to collapse
Listen, the thing is that I wouldn't even bother to test another rom. I already have made a thread here asking for some help because I have problem with incoming caller ID on 4G/5G with VoLTE enabled. Since no solution has been found, even after contacting Realme, the next thing to try was another (stock always) rom to see if it would work. If I would try to change rom I have to be VERY careful because there are absolutely NO service centers of Realme in my country. That's why I'm asking these questions. I want to know how safe is to "transfer" from another rom and if it is posible to return to my stock rom again with locked bootloader.
Malediktion said:
Listen, the thing is that I wouldn't even bother to test another rom. I already have made a thread here asking for some help because I have problem with incoming caller ID on 4G/5G with VoLTE enabled. Since no solution has been found, even after contacting Realme, the next thing to try was another (stock always) rom to see if it would work. If I would try to change rom I have to be VERY careful because there are absolutely NO service centers of Realme in my country. That's why I'm asking these questions. I want to know how safe is to "transfer" from another rom and if it is posible to return to my stock rom again with locked bootloader.
Click to expand...
Click to collapse
It's with my tool, it's totally safe, and it's easy to return to your region of origin, she has some protection so that nothing serious happened.
SrCDA said:
It's with my tool, it's totally safe, and it's easy to return to your region of origin, she has some protection so that nothing serious happened.
Click to expand...
Click to collapse
Thank you man. Totally appreciate your effort. Just to be clear one last time. You can do w/e test you want by changing roms/regions with unlocked BL and then after if you want to return your phone to what it was from factory you flash again your initial rom and lock BL.
Malediktion said:
Thank you man. Totally appreciate your effort. Just to be clear one last time. You can do w/e test you want by changing roms/regions with unlocked BL and then after if you want to return your phone to what it was from factory you flash again your initial rom and lock BL.
Click to expand...
Click to collapse
correct
great work thank you
Sorry if I may ask for clearer steps. The steps is kinda vague like you did not mention anything that need to be prepared from the device. And, if we change to another region rom, do we get future OTA official update form realme? Thank you in advance.
Alifirdaus said:
Sorry if I may ask for clearer steps. The steps is kinda vague like you did not mention anything that need to be prepared from the device. And, if we change to another region rom, do we get future OTA official update form realme? Thank you in advance.
Click to expand...
Click to collapse
I tested it yesterday, with a person, she downloaded, changed the region installing an older version, and managed to update by ota.
SrCDA said:
I tested it yesterday, with a person, she downloaded, changed the region installing an older version, and managed to update by ota.
Click to expand...
Click to collapse
Thanks for your reply. One more thing, for other region, does it come with Google? Mine was chinese rom and want to see if changing region will get Google service preinstalled. And, can you help me to check the Widevine level as well. Hope I'm not bothering you
Alifirdaus said:
Thanks for your reply. One more thing, for other region, does it come with Google? Mine was chinese rom and want to see if changing region will get Google service preinstalled. And, can you help me to check the Widevine level as well. Hope I'm not bothering you
Click to expand...
Click to collapse
yes, you can change to europe, russia, india, it comes with google, widevine depends, there are people who keep it on L1 and others move to L3, I don't know why.
I got an error when extracting the zip file. its been a 5th tried now. I downloaded the other region one.
Alifirdaus said:
I got an error when extracting the zip file. its been a 5th tried now. I downloaded the other region one.
Click to expand...
Click to collapse
I just successfully change my chinese rom to indian rom and thank god all google services are working fine. I will test everything first and will update here again. Thank you so much for coming with this!
Hi, im from europe and i have realme gt neo 2 europe variant. Just for information:
i unlocked bootloader, flashed chinese rom and locked bootloader again and everything worked like a charm.
No hardbrick.
PS. i relock bootloader because my bank accounts didnt worked with unlocked bootloader.
PSS. OTA updates works like a charm too on chinese rom.
joksax said:
Hi, im from europe and i have realme gt neo 2 europe variant. Just for information:
i unlocked bootloader, flashed chinese rom and locked bootloader again and everything worked like a charm.
No hardbrick.
PS. i relock bootloader because my bank accounts didnt worked with unlocked bootloader.
Click to expand...
Click to collapse
You just flashed every partition and everything worked ok after locking it? That's very nice to hear.

Question bootloader locked, No valid operating system could be found. The device will not boot.

HELP! I was trying to re-lock my bootloader so I went into Developer options and turned off the OEM unlocking option, which told me to restart my device. restarting it brought me to the bootloader so I then issued the fastboot.exe flashing lock command and after that I'm getting the message No valid operating system could be found. The device will not boot. what are my options??
dimm0k said:
HELP! I was trying to re-lock my bootloader so I went into Developer options and turned off the OEM unlocking option, which told me to restart my device. restarting it brought me to the bootloader so I then issued the fastboot.exe flashing lock command and after that I'm getting the message No valid operating system could be found. The device will not boot. what are my options??
Click to expand...
Click to collapse
The correct command is fastboot flashing lock. If you can get into bootloader reflash the factory image and it should reboot
If you want to re-lock the bootloader, you need to have a completely stock ROM or have a ROM with a custom avb key flashed. Anything else will show the error you noted.
You should be able to solve this by flashing the stock OTA in recovery mode.
K1nsey6 said:
The correct command is fastboot flashing lock. If you can get into bootloader reflash the factory image and it should reboot
Click to expand...
Click to collapse
I can get into the bootloader, however here I'm seeing the message that the bootloader is already locked! tried flashing the November update, but getting the failed message that I need to be unlocked
craigacgomez said:
If you want to re-lock the bootloader, you need to have a completely stock ROM or have a ROM with a custom avb key flashed. Anything else will show the error you noted.
You should be able to solve this by flashing the stock OTA in recovery mode.
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when I try to get to recovery mode through the bootloader, it immediately spits me back out to the message that there's no valid operating system and to press the power button to power off
Seems like you messed up and bricked your device try seeing if you can unlock your bootloader still if not contact whoever you got device off and report for warranty
dimm0k said:
when I try to get to recovery mode through the bootloader...
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FYI, the bootloader is one of the functional recovery modes.
Try the online Google flash tool. This is what I used to flash back to stock after unrooting my device to run some tests. Although in my case, as you're meant to, I performed the flash prior to re-locking the bootloader, so it might not work for you.
Android Flash Tool
flash.android.com
minidude2012 said:
Seems like you messed up and bricked your device try seeing if you can unlock your bootloader still if not contact whoever you got device off and report for warranty
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NippleSauce said:
FYI, the bootloader is one of the functional recovery modes.
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Beefheart said:
Try the online Google flash tool. This is what I used to flash back to stock after unrooting my device to run some tests. Although in my case, as you're meant to, I performed the flash prior to re-locking the bootloader, so it might not work for you.
Android Flash Tool
flash.android.com
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unfortunately that was a no go for me as well... tells me I need to unlock to perform any of the functions
that said, any possibility the guys at Ubreakifix would be able to get this fixed?
dimm0k said:
unfortunately that was a no go for me as well... tells me I need to unlock to perform any of the functions
that said, any possibility the guys at Ubreakifix would be able to get this fixed?
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Unlikely. This now needs a logic board swap I suspect. You can't unlock the bootloader as you toggled the OEM switch in developer options then relocked the bootloader before flashing stock, you can't boot to Android to untoggle that switch to allow another fastboot unlock command because you have a non-stock image installed with a locked bootloader, and you can't flash back to stock.
Sorry to say, your phone appears to be bricked.
Send it back for a warranty swap. The bootloader is listed as being locked, so unless they delve deeper, it's not obvious the end-user is at fault rather than the device simply refusing to boot one day for no apparent reason.
Beefheart said:
Send it back for a warranty swap. The bootloader is listed as being locked, so unless they delve deeper, it's not obvious the end-user is at fault rather than the device simply refusing to boot one day for no apparent reason.
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should I try sending it back for a warranty swap or would sending it into Google for repairs not be a good idea?
Did you buy it direct from Google? If so that could be an issue, as they're likely going to try to diagnose the fault prior to sending out a replacement, and will discover it's caused by you before refusing a replacement. Where as if you bought it from some a third party vender, they will likely just swap it without any in depth checks.
Beefheart said:
Did you buy it direct from Google? If so that could be an issue, as they're likely going to try to diagnose the fault prior to sending out a replacement, and will discover it's caused by you before refusing a replacement. Where as if you bought it from some a third party vender, they will likely just swap it without any in depth checks.
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I purchased this from Amazon when they had the $200 Amazon GC offer... they're allowing me to return the phone, but if I were to buy it again from them it would be at full price. for some reason they are not allowing exchanges/replacement. that said, I was exploring if it would be worth sending to Google for a repair... when you say they in the last sentence, are you referring to Google or the third party vendor?
dimm0k said:
I purchased this from Amazon when they had the $200 Amazon GC offer... they're allowing me to return the phone, but if I were to buy it again from them it would be at full price. for some reason they are not allowing exchanges/replacement. that said, I was exploring if it would be worth sending to Google for a repair... when you say they in the last sentence, are you referring to Google or the third party vendor?
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That's their policy. I bought a Logitech MX Keys for £65 in a UK deal about 10 months ago. When it developed a fault, they offered me a full refund but point blank refused an exchange for a new keyboard, which annoyed me no end as it had gone up to £105 at that point. But it can work the other way around too and you can be the one with the money in your pocket. I've had that happen too.
Beefheart said:
That's their policy. I bought a Logitech MX Keys for £65 in a UK deal about 10 months ago. When it developed a fault, they offered me a full refund but point blank refused an exchange for a new keyboard, which annoyed me no end as it had gone up to £105 at that point. But it can work the other way around too and you can be the one with the money in your pocket. I've had that happen too.
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damn, that is rather disappointing! that said and from your response, I guess it's better to go and return to Amazon then...
dimm0k said:
damn, that is rather disappointing! that said and from your response, I guess it's better to go and return to Amazon then...
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The question is, can you use the GC when you purchase another phone?
schmeggy929 said:
The question is, can you use the GC when you purchase another phone?
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unfortunately Amazon thought of abuse this way and priced it so that the device was $200 less from the get-go and charging $200 for the GC
Doesn’t matter what they say, if the device is in warranty, just write them that the device is damaged. They must replace it.

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