How to unbrick? - Huawei P20 Questions & Answers

Hello! I've try to rollback my eml-l29 and everything was ok but after i press to go in erecovery to factory reset the screen goes black and only connected in fastboot but without picture on screen i can only hear the connection sound on pc. I tryed to falsh system kernel cust and recovery_ramdisc but after i typed fastboot reboot nothing happend screen is still black and only fastboot sound. What can i do please help?

cropp7 said:
Hello! I've try to rollback my eml-l29 and everything was ok but after i press to go in erecovery to factory reset the screen goes black and only connected in fastboot but without picture on screen i can only hear the connection sound on pc. I tryed to falsh system kernel cust and recovery_ramdisc but after i typed fastboot reboot nothing happend screen is still black and only fastboot sound. What can i do please help?
Click to expand...
Click to collapse
Check FW version:
fastboot oem get-build-number
flash files for your version:
fastboot erase system
fastboot flash kernel kernel.img
fastboot flash ramdisk ramdisk.img
fastboot flash recovery_ramdisk recovery_ramdis.img
fastboot flash system system.img
fastboot flash cust cust.img
fastboot reboot
its working for me

You need to buy DC unlocker to unbrick your phone through testpoints (exactly same thing happened to me)

madoxx77 said:
You need to buy DC unlocker to unbrick your phone through testpoints (exactly same thing happened to me)
Click to expand...
Click to collapse
no need DC unlocker, check this:
https://forum.xda-developers.com/showpost.php?p=79383551&postcount=18

Related

[Q] Xoom stuck on starting RSD mode 2?

Flashed Build HWI69 for US Retail on a Canadian wifi MZ604 xoom..tired of
waiting for 3.1 update.
adb reboot bootloader
fastboot oem unlock
adb reboot bootloader
Xoom will then reboot into bootloader screen
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lock
fastboot reboot
It is stuck on Starting RSD mode 2.
I can not get it to fastboot protocol...device does not turn off.
Any solutions?
Fastboot OEM lock is where you went wrong. Anyway see this thread.
OK I did this procedure yesterday but did not relock (I know it says to on the moto site but the guide I read said not to).
Anyway, pressing power and vol up will force a reboot. Unsure what will happen when it boots back up though...!
You should be fine. Only trying to relock will cause this error.
To get back to fastboot after a bad lock do this.
Power button and volume up, this will reboot the device.
As soon as the screen turns back on holds down power and volume down. In about 60 seconds your device should go to fastboot. Do not let go until it gets there.
Sent From My Evo
Thanks for the reply . It now says Failed to boot LNX 0X0004
Starting Fastboot protocol support
However it will not connect to xoom.
<wait for device> when issue fastboot command.
What the hell is going on?
you need to read this thread
http://forum.xda-developers.com/showthread.php?t=1108518
The exact thread I linked to...(-__-)'
I followed instruction from motorla dev support site.
"h**p://developer.motorola.com/products/software/?pubid=987654"
It uses command "fastboot oem lock"! So why did locking brick the device?
here it is:
Device Software Images
Select the appropriate device software image to download and re-lock your device. If you need to find your build number on your Motorola device go to Settings and About Phone or About Tablet.
The commands to flash and re-lock your device are as follows:
fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot erase cache
fastboot oem lock
Note: If no userdata.img file is present in your download, please issue the command:
fastboot erase userdata
The Moto instructions are for locking the device back to it's own image. You are not using your device's own image. Every guide I've seen on here tells you not to relock, regardless of what Moto say. Believe the devs.
Thanxs
I now believe the devs......
Thanks for the reply. Sent the beast out to moto Canada today.
tfx1 said:
I now believe the devs......
Thanks for the reply. Sent the beast out to moto Canada today.
Click to expand...
Click to collapse
Try making or obtaining a factory cable which its different from an OTG cable. Start with the two links below. This might save the day.
http://forum.xda-developers.com/showthread.php?t=1077414
http://forum.xda-developers.com/showthread.php?t=1108518

bricked the phone

my L04 was running b500 5.1.1 and i flashed recovery, system, cache, boot, cust and userdata to go back to b370 but my device is boot looping and is not entering fastboot and recovery mode just show bootlogo
please help
shubham412302 said:
my L04 was running b500 5.1.1 and i flashed recovery, system, cache, boot, cust and userdata to go back to b370 but my device is boot looping and is not entering fastboot and recovery mode just show bootlogo
please help
Click to expand...
Click to collapse
maybe you can flash the b500 again?
shubham412302 said:
my L04 was running b500 5.1.1 and i flashed recovery, system, cache, boot, cust and userdata to go back to b370 but my device is boot looping and is not entering fastboot and recovery mode just show bootlogo
please help
Click to expand...
Click to collapse
Hi,
The same boot loop error also I encountered , and here is how i solved it.
1. First U need to download this tool -> HONOR_6_and_6Plus_Multi-Tool
2. run the Honor6MultiTool.bat
3. it will ask to install universal ADB driver. follow the instruction and install
4. then 6th option will be UNBRICK, Enter ur choice: 6
5. Then u follow the instruction
After that the phone will boot.
If any problem will occur do comment below.
All The Best!!
biswajit_kar said:
Hi,
The same boot loop error also I encountered , and here is how i solved it.
1. First U need to download this tool -> HONOR_6_and_6Plus_Multi-Tool
2. run the Honor6MultiTool.bat
3. it will ask to install universal ADB driver. follow the instruction and install
4. then 6th option will be UNBRICK, Enter ur choice: 6
5. Then u follow the instruction
After that the phone will boot.
If any problem will occur do comment below.
All The Best!!
Click to expand...
Click to collapse
the device does not enters fastboot mode just show the bootlogo
it enters fastboot but still the device wont boot
can you tell me the commands to flash all files from the update.app from fastboot
maybe that will solve the issue
DOWNLOAD stock firmware (update.app) extract from it Recovery.img system.img boot.img cache.img cust.img.and userdata.img. then turn your mobile in fastboot and connect to usb, open CMD in PC and write CD "path to adb.exe", when you are there, copy extracted files there too and write in CMD this lines:
fastboot flash recovery RECOVERY.img
fastboot flash system SYSTEM.img
fastboot flash boot BOOT.img
fastboot flash cache CACHE.img
fastboot flash cust CUST.img
fastboot flash userdata USERDATA.img
when you will finish write FASTBOOT REBOOT and that's all
Sent from my H60-L04 using XDA Free mobile app
Following. Reply if what Biswajit told you worked in reverting from Lollipop. Have you done this yourself Biswajit?
biswajit_kar said:
DOWNLOAD stock firmware (update.app) extract from it Recovery.img system.img boot.img cache.img cust.img.and userdata.img. then turn your mobile in fastboot and connect to usb, open CMD in PC and write CD "path to adb.exe", when you are there, copy extracted files there too and write in CMD this lines:
fastboot flash recovery RECOVERY.img
fastboot flash system SYSTEM.img
fastboot flash boot BOOT.img
fastboot flash cache CACHE.img
fastboot flash cust CUST.img
fastboot flash userdata USERDATA.img
when you will finish write FASTBOOT REBOOT and that's all
Sent from my H60-L04 using XDA Free mobile app
Click to expand...
Click to collapse
i tried this already but it did not work
i think flashing all the 22 files from the update.app file will work
or i have to wait till the lollipop update file comes out
my bootloader is unlocked so will my device be repaired under warranty(huawei didn't mentioned voiding warranty by unlocking bootloader while getting the code)
shubham412302 said:
i tried this already but it did not work
i think flashing all the 22 files from the update.app file will work
or i have to wait till the lollipop update file comes out
my bootloader is unlocked so will my device be repaired under warranty(huawei didn't mentioned voiding warranty by unlocking bootloader while getting the code)
Click to expand...
Click to collapse
Yes.
Though You can relock that by using the tool HONOR_6_and_6Plus_multi_tool from here .
try it. wish u luck.
http://forum.xda-developers.com/showthread.php?t=3142268
shubh_007 said:
http://forum.xda-developers.com/showthread.php?t=3142268
Click to expand...
Click to collapse
That would have worked but i already gave my phone to the service centre
shubham412302 said:
the device does not enters fastboot mode just show the bootlogo
it enters fastboot but still the device wont boot
can you tell me the commands to flash all files from the update.app from fastboot
maybe that will solve the issue
Click to expand...
Click to collapse
try this method
http://forum.xda-developers.com/honor-6/general/revert-h60-l04-emui-3-1-to-emui-3-0-t3142268

Nexus 5 Stuck On 'Formatting /Data' After Factory Image Flashing

Hi
I have Nexus 5 (Hammerhead) 16GB. After Marshmallow latest update my phone begun to restart randomly, So I tried to do factory reset. When I entered recovery mode It did not show android lying on its back with label "No command" , instead It showed standing android with some rotating cube (or gear) on its tummy. I tried to flash factory image in several ways, using nexus root toolkit and fastboot. I even tried different versions of android to flash but no result. My phone still shows Android with rotating gear on its tummy. Today I found this Thread and did everything that was told but no luck. :crying: If anyone could help I would be very grateful. Sorry for my bad English.
What is "everything that was told"? Did you erase everything then flash everything new? How long are you letting it sit with the rotating cube/gear thing?
exninja said:
What is "everything that was told"? Did you erase everything then flash everything new? How long are you letting it sit with the rotating cube/gear thing?
Click to expand...
Click to collapse
thank you for your reply.
I used this commands as it was described
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot flash bootloader "name of bootloader"
fastboot reboot-bootloader
fastboot flash radio "name of radio"
fastboot reboot-bootloader
astboot flash system system.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash cache cache.img
every operation was successful.
I waited for this rotating gear more than 10 hours, nothing changed Still shows same
When I click power button + up volume key It says "Formatting /data"
Did you erase and reflash userdata img file?
audit13 said:
Did you erase and reflash userdata img file?
Click to expand...
Click to collapse
yes I did that, but still shows Android with rotating gears.
It does not matter whether I start my phone normally or boot a recovery mode It still shows this Android animation.
Does the phone's bootloader remain unlocked after rebooting?

e: can't mount/cache karbonn sparkle v

I was using cm13 sprout 4 and twrp recovery. Was getting error unfortunately ---- apps stopped again again from different apps.
So simply thought of wiping cache and dalvik from twrp . It gave error e: can't mount /cache. So thought of formattig data but by mistake instead of factory reset, i formatted my android. Now i have no os installed just a twrp and unlocked bootloader with me.
now it gives error also E: can't mount/ system also.
pls help, i have only this night to fix it , tight schedule ahead
Try to flash 4.4.4 (posted here) with SPTools. Then install TWRP and update to 6.0.1.
thanks for reply bro!!
but is their any alternate to sp flash tools.
As my sp flash tool does not detect my device. I have tried it many times on different pcs.
MihaiSG said:
Try to flash 4.4.4 (posted here) with SPTools. Then install TWRP and update to 6.0.1.
Click to expand...
Click to collapse
thanks for reply bro!!
but is their any alternate to sp flash tools.
As my sp flash tool does not detect my device. I have tried it many times on different pcs.
i have tried before on this thread also.
http://forum.xda-developers.com/sparkle-v/general/stock-firmware-t2889509/page5
#41
today i tried these commands in fastboot :
fastboot flash boot boot.img
fastboot flash cache cache.img
fastboot flash system system.img
fastboot flash userdata userdata.img
fastboot reboot
all commands finished successfully but strangely their no change in my device.
then i tried flashing cwm recovery
fastboot flash recovery cwm.img
but when i boot in recovery it was twrp only.
so i think the flash command from fastboot is not working.
pls help...
Now i managed to get my friends pc and flashed stock rom using sp flash tool , everything went smoothly without any error but strangely nothing happened in device. It remains same without any os . Is my device completely damaged?? :'(
i am attaching logs
please someone reply....
ghanta said:
i am attaching logs
please someone reply....
Click to expand...
Click to collapse
I used sp flash tool format+download option and flashed stock rom. Now its not even booting or charging anymore. Went to service center they simply said its dead buy a new one...
It is being detected by sp flash tools even now also.
Is their anyone who can help me out here???
i don't want to loose my device
please,anyone help
ghanta said:
I used sp flash tool format+download option and flashed stock rom. Now its not even booting or charging anymore. Went to service center they simply said its dead buy a new one...
It is being detected by sp flash tools even now also.
Is their anyone who can help me out here???
i don't want to loose my device
please,anyone help
Click to expand...
Click to collapse
Hi.. i am also facing the same problem. Did you solve it?? Or what did you do?
I have to buy a new phone.
It is still lying in one corner waiting for any solution if you can find
Karbonn Sparkle V
I have the same issue of mounting system as well as cache and data partition shows error and does not mount.
I did use below commands which completed successfully but does affect my device:
fastboot oem unlock (Press Vol+)
fastboot flash preloader preloader_sprout.bin
fastboot flash protect1 protect_f.img
fastboot flash protect2 protect_s.img
fastboot flash bootloader bootloader.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash secro secro.img
fastboot flash para para.img
fastboot flash logo logo.bin
fastboot flash oem oem.img
fastboot flash system system.img
fastboot flash cache cache.img
fastboot flash userdata userdata.img
fastboot oem lock (Press Vol+)
fastboot reboot
Rajesh Jakhal
Got a solution!
This is kind of late but I hope this helps other people who have the same issue and are viewing this thread!
Take the battery out of your phone and connect it to your computer. Use SP flash tools and flash the stock rom, using the option, "Format All + Download"
You may have to press a button or button combination to get SPFT to recognize your phone. My phone's volume rockers don't work so I cant help you with that, it was pure luck for me!
Once you let it flash, let the phone boot. It will take some time, longer than usual but it WILL boot. And the bootloader will be locked, so be prepared to start tinkering from scratch!

system isn't load after fresh install

Hi,
i have nexus 5 that was something wrong with the WIFI (find nothing when was search) so , i did factory reset via the device and the problem still stays, so , i unlocked the bootloader via the android factory images webpage, than i installed the latest version with flash all file to the device.
than the device just show Google logo and nothing came up with it, than i tried lower version than the last one, and i got the same result, than i tried manually to enter the commandes and i got the same result,
where do i wrong that the system isn't up yet?
thank you
Hi:
I7210I said:
Hi,
i have nexus 5 that was something wrong with the WIFI (find nothing when was search) so , i did factory reset via the device and the problem still stays, so , i unlocked the bootloader via the android factory images webpage, than i installed the latest version with flash all file to the device.
Click to expand...
Click to collapse
You need this files (if using last factory image, hammerhead-m4b30z-factory-625c027b.zip):
boot.img
bootloader-hammerhead-hhz20h.img
cache.img
radio-hammerhead-m8974a-2.0.50.2.30.img
recovery.img
system.img
userdata.img
so unzip hammerhead-m4b30z-factory-625c027b.zip (factory image), the unzip
image-hammerhead-m4b30z.zip (located inside factory image) to get all files above
in the same folder and last but not least flashing (in fastbood mode):
type this (one line each time and press enter after each line)
fastboot flash bootloader bootloader-hammerhead-hhz20h.img
fastboot reboot-bootloader
fastboot flash radio radio-hammerhead-m8974a-2.0.50.2.30.img
fastboot reboot-bootloader
fastboot flash system system.img
fastboot flash userdata userdata.img (this wipe your device.)
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot erase cache
fastboot flash cache cache.img
fastboot reboot.
That's all
Good luck
gsausalito said:
Hi:
You need this files (if using last factory image, hammerhead-m4b30z-factory-625c027b.zip):
boot.img
bootloader-hammerhead-hhz20h.img
cache.img
radio-hammerhead-m8974a-2.0.50.2.30.img
recovery.img
system.img
userdata.img
so unzip hammerhead-m4b30z-factory-625c027b.zip (factory image), the unzip
image-hammerhead-m4b30z.zip (located inside factory image) to get all files above
in the same folder and last but not least flashing (in fastbood mode):
type this (one line each time and press enter after each line)
fastboot flash bootloader bootloader-hammerhead-hhz20h.img
fastboot reboot-bootloader
fastboot flash radio radio-hammerhead-m8974a-2.0.50.2.30.img
fastboot reboot-bootloader
fastboot flash system system.img
fastboot flash userdata userdata.img (this wipe your device.)
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot erase cache
fastboot flash cache cache.img
fastboot reboot.
That's all
Good luck
Click to expand...
Click to collapse
thnk you, i did it manually and i get the same result , what can be more? maybe the last 2-3 versions are making these thing?
Hi:
I7210I said:
thnk you, i did it manually and i get the same result , what can be more? maybe the last 2-3 versions are making these thing?
Click to expand...
Click to collapse
Did it fail or did it complete the process?
How long did you wait?
gsausalito said:
Hi:
Did it fail or did it complete the process?
How long did you wait?
Click to expand...
Click to collapse
now it come up, but the wifi isn't loaded, it search and find nothing even that there is at the room..maybe the hardware have problem?
Sent from my Pixel 2 XL using Tapatalk
Hi,
I7210I said:
now it come up, but the wifi isn't loaded, it search and find nothing even that there is at the room..maybe the hardware have problem?
Sent from my Pixel 2 XL using Tapatalk
Click to expand...
Click to collapse
Sorry, can't help. Never happened to me. It seems a hardware issue!

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