Database Users

Help cannot fix may have hard bricked phone please help!!

my phone is everything first off and i cannot do any thing erecovery cant do anything because im on unoffical 90nrdm os when i try do anything i adb it cannot find my device and just says waiting for device when trying to lock bootloader in fastboot mode so i tried unlocking it (i got the code) but it says s"FAILED stat does not match" and i cannot flash anything to fix my phone and i cannot find the huawei page to unlock my bootloader because it keeps saying " this id is registered on the other site" but never tells me where to go or find the "other site" bootloader unlock page i really need my phone to work resetting it is fine i got back ups but i really need the phone to work all help is welcome, i have adb and fastboot installed i tried useing srk tools 2.0 lod-chong and also cmd to try fix my issue but i get no where. i have no recovery either it just wont boot into twrp it just goes straight to erecovery so i cannot do any dload method. also when i tried other methods it said password wrong for some reason.
i flashed oeminfo.bin and custom.bin to go back to offical nougat from somewhere after this update nougat didnt work (hisuite refused to install it) : http://ministryofsolutions.com/2017/03/huawei-p9-lite-vns-l31-nougat-b371-update-stable-europe.html so i then looked into downgrading and got to this https://forum.xda-developers.com/hu...nt/europe-vns-l31-toolkit-bootloader-t3432873 and i did the oem info flash and it like the person said on my previews post ( https://forum.xda-developers.com/huawei-p9lite/help/bricked-device-dont-how-to-fix-l31-t3617851) and it just like he said but i did it before he commented and now my phone wont boot and when i enter my bootloader code it says FAILED stat does not match and because i cannot re lock and unlock my boot loader i cannot flash anything to get my phone back, how can i fix this.

Huawei p9 lite bricked, no fastboot, unlocked and stucked on boot....

Hello,
I am from Greece and Ive bought from Vodafone a Huawei P9 lite vns-l21 before one month. Ive installed the nougat rom 370 with firmware finder but I made a mistake choozing the NRD-90M test key. So I begun to roll back to Marshmallow. Everything ok. Then Itried to install an other rom from firmware finder(i think C432b371) and again NRD-90M test key...
Again roll back to Marshmallow...so in the first step when i was trying to install with dload method the Huawei P9 Lite Rollback Package For L21C432 (EU) my phone stucked on boot loop but I had fastboot. Then I have unlocked the bootloader to see if there is anything that i can do with srk tool and now i have a beautifull bricked phone stuck :
"Your device has been unlocked and can't be trusted.
you device is booting now"
In this point nothing happens, I can not go to fast boot, No recovery mode, The hardware keys not doing anything, only resetting the phone in loop..
I dont know what to do and Huawei wants 215euro to fix my phone.
My mistake I know but is there enything that i can do know? Its a new phone!
Sorry for my english

I would suggest getting an sdcard and creating a dload folder inside, then putting an official rom UPDATE.APP file inside the dload folder and try 3button method

o-w-a said:
I would suggest getting an sdcard and creating a dload folder inside, then putting an official rom UPDATE.APP file inside the dload folder and try 3button method
Click to expand...
Click to collapse
Thanks for the advice but I have already tried that with stock rom B161 and nothing happens with 3 button method. Still in the same situation.. Everything i do with the buttons the phone resetting and stays on until the battery is dead..

ioanpara said:
Thanks for the advice but I have already tried that with stock rom B161 and nothing happens with 3 button method. Still in the same situation..
Click to expand...
Click to collapse
do you get verification error or is it just stuck at "your devices is booting now"

o-w-a said:
do you get verification error or is it just stuck at "your devices is booting now"
Click to expand...
Click to collapse
Stuck on "your device is booting now".

ioanpara said:
Stuck on "your device is booting now".
Click to expand...
Click to collapse
As far as I understand, you can't even power off your device which is a problem since the 3button method won't work if you can't power off the device.

o-w-a said:
As far as I understand, you can't even power off your device which is a problem since the 3button method won't work if you can't power off the device.
Click to expand...
Click to collapse
Exactly!

I am still in the same situation... Anyone who knows what to do?

ioanpara said:
Hello,
I am from Greece and Ive bought from Vodafone a Huawei P9 lite vns-l21 before one month. Ive installed the nougat rom 370 with firmware finder but I made a mistake choozing the NRD-90M test key. So I begun to roll back to Marshmallow. Everything ok. Then Itried to install an other rom from firmware finder(i think C432b371) and again NRD-90M test key...
Again roll back to Marshmallow...so in the first step when i was trying to install with dload method the Huawei P9 Lite Rollback Package For L21C432 (EU) my phone stucked on boot loop but I had fastboot. Then I have unlocked the bootloader to see if there is anything that i can do with srk tool and now i have a beautifull bricked phone stuck :
"Your device has been unlocked and can't be trusted.
you device is booting now"
In this point nothing happens, I can not go to fast boot, No recovery mode, The hardware keys not doing anything, only resetting the phone in loop..
I dont know what to do and Huawei wants 215euro to fix my phone.
My mistake I know but is there enything that i can do know? Its a new phone!
Sorry for my english
Click to expand...
Click to collapse
Hmm I dont get why they want 215 euro to exchange the storage chip.
I guess your phone is pretty much a brick now have fun. Lol sry

I had a similar problem with the boot-loop.
Press PowerOff until the screen goes black, and then immediately leave power-off and press Power Off + Volume Up for ever until the phone boots normally.
That's what I did and worked for me.

Can you boot to fastboot, if you can you can recover it with DC-Phoenix tool.

Dejan Kruljac said:
Can you boot to fastboot, if you can you can recover it with DC-Phoenix tool.
Click to expand...
Click to collapse
No he cant, I have the same problem. Cant fastboot, adb or 3 button method. Even tried unplugging battery then doing 3 button method.

Anyone sopve this problem with no fastboot no recovery no 3 buttons mode?

try to drain the battery, keep screen on, or keep phone on until battery is 0%, you can't turn it on . keep volume down and power pressed, plug usb to pc , if you're lucky fastboot could be ok

Hi there, I also managed to brick my P9Lite - no recovery, no fastboot. After draining the battery completly the phone starts fine but I can't install system updates. I guess I have to live with that. Unfortunately I can't activate bluetooth. Does anyone has an idea how to get bluetooth working again?

idk for your BT issue , but did you try Firmware Finder for Huawei ? easy to use, you will probably able to dl an update. don't use "small " package OTA, use full firmware, about1.6 or 1.8 Go, may could fix your BT.

sonneper said:
idk for your BT issue , but did you try Firmware Finder for Huawei ? easy to use, you will probably able to dl an update. don't use "small " package OTA, use full firmware, about1.6 or 1.8 Go, may could fix your BT.
Click to expand...
Click to collapse
didn't work out as Firmware Finder is only another way to find a firmware but not another way to install the firmware...

Hello guys,
sorry if i write this but i think necessary to grab best helps..
Try to describe problem in detail (ex. - i was upgrading/downgrading from..........to............ firmware and it bricks, etc...)
Your latest working phone/system/firmware (ex. - mine was VNS-L31C432B381-before i upgraded to EliteRom).
Some information changes according to the country / region of the world in which you live,
so they are useful for those who help you to redirect to the correct thread / give right suggestions...
All the best guyz

didn't work out as Firmware Finder is only another way to find a firmware but not another way to install the firmware...
Yes , a way to get last firmware, or firmware you want through the huawei update app. Without firmware finder ,no way to " force" huawei update app to install anything you want on your device

Sorry for the late response, I'm reading the thread right now. Firmware Finder can also be used to install firmware through eRecovery. Install Firmware Finder for Windows: http://pro-teammt.ru/projects/hwff/v2/GetLatestVersion.action
You need to write down your existing and change both DNS addresses in your router to: 81.177.139.39
You also need to deactivate IPv6 protocol.
Open FirmwareFinderRewrite.exe, go to "common base" and search VNS-LXXCXXX (Your model and customization). Copy the link in "changelog" not of the newest, but of the 2nd or 3rd youngest firmware. Check if it has been approved by pasting the link under the tab with the checkmark (5th position counting from left). If the response is "This firmware was approved to install" you are ready to go.
Copy the same link in the proxy field (the cloud symbol, 4th position counting from left). Click on "set" and "register update".
Now switch off your phone, press "Vol+" and simultaneously connect it to the PC. You enter eRecovery now. Tap on "Download latest version and recovery". Your phone should start the download now, after a couple percent you can reset your router settings, the download will continue. If all is well, the firmware will then be installed.

Soft Brick, A2017G, Bootloader unlocked, Stock Recovery

(or is it hard brick)
Hi,
A2017G
Started with marshmallow,
Unlocked bootloader
attempted to install Slim7
seemed to work but with some possible errors, (wouldn't sync with google... retrospect I should have looked elsewhere before...)
attempted in install stock rom
using
ZTE_A2017GV1.2.0B04_BootStack_by_tron1.zip
ZTE_A2017GV1.2.0B04_Stock_System_by_tron1.zip
which wouldn't boot
So I tried reinstall Slim7
then stock again,
then, like the noob that I am, I removed twrp with
ZTE_A2017GV1.2.0B04_Full_Stock_Reverter_by_tron1.zip
which installs stock recovery
so, now I have a stock rom that won't boot,
an unlocked bootloader
and stock recovery
Not sure what to do from here
thanks in advance for any assistance.

I can abd sideload and update from SD card, but everything I have fails signature verification.
edit: so frustrating trying to find that 1 zip

Dizzee said:
(or is it hard brick)
Hi,
A2017G
Started with marshmallow,
Unlocked bootloader
attempted to install Slim7
seemed to work but with some possible errors, (wouldn't sync with google... retrospect I should have looked elsewhere before...)
attempted in install stock rom
using
ZTE_A2017GV1.2.0B04_BootStack_by_tron1.zip
ZTE_A2017GV1.2.0B04_Stock_System_by_tron1.zip
which wouldn't boot
So I tried reinstall Slim7
then stock again,
then, like the noob that I am, I removed twrp with
ZTE_A2017GV1.2.0B04_Full_Stock_Reverter_by_tron1.zip
which installs stock recovery
so, now I have a stock rom that won't boot,
an unlocked bootloader
and stock recovery
Not sure what to do from here
thanks in advance for any assistance.
Click to expand...
Click to collapse
Just use MiFlash, that one's guaranteed to work. Read my DFU unbrick guide to know how to use it. Just skip the part where you have to disassemble the phone, since you can get to EDL mode by (with the phone off and the USB cable connected to the PC) holding both volume buttons and inserting the USB-C cable to the phone.

I did read your guide, was, hoping to avoid dismantling it...
I tried pressing all 3 buttons.
Am I understanding the procedure correctly:
[phone switched off] + usb-C cable connected to PC only
MiFlash running at this point??
Hold both volume keys in and in insert Cable to Phone
at this point is the phone supposed to switch on?
At no point am I supposed to press the power button?
fyi: I will try different combinations, is great to have a solution, thank you.
Ah.... ok... so, the phone will display nothing, rely on the sound of PC and/or the device manager check and/or hit refresh on miflash
Fyi to anyone, if you have axon7toolkit installed and thus can't install a second version of MiFlash, open up the toolkit and hit 7 (unlock bootloader) to fire up MiFlash... or just go to C:\XiaoMi\XiaoMiFlash
the FULL_EDL file I have produces a couldn't find script Error when loading into MiFlash
so far when attempting to flash all zips
I have started MiFlash with admin
unzipped FULL_EDL file to a folder in root C:\ and ensured there are no spaces in address.
Every time / Every file produces couldn't find script error when loaded into MiFlash
when I attempt to flash the file it says cannot receive hello packet and then times out with an error
Tried disabling anti-virus/firewall, still same error
upgraded MiFlash to 2017.4.24.0 ( older 2016 is included with axon7toolkit), this removes the couldn't find script error, but still not receiving a hello packet, gunna fiddle with the phone as I'm pretty sure the error is coming from there
YES!
rebooted phone, turned off, restarted into EDL, flashed the stock rom from zte site... is in chinese... but it works. Thank you Thank you
so adventure over, after all that I am back to 6.0.1...

Dizzee said:
I did read your guide, was, hoping to avoid dismantling it...
I tried pressing all 3 buttons.
Am I understanding the procedure correctly:
[phone switched off] + usb-C cable connected to PC only
MiFlash running at this point??
Hold both volume keys in and in insert Cable to Phone
at this point is the phone supposed to switch on?
At no point am I supposed to press the power button?
fyi: I will try different combinations, is great to have a solution, thank you.
Ah.... ok... so, the phone will display nothing, rely on the sound of PC and/or the device manager check and/or hit refresh on miflash
Fyi to anyone, if you have axon7toolkit installed and thus can't install a second version of MiFlash, open up the toolkit and hit 7 (unlock bootloader) to fire up MiFlash... or just go to C:\XiaoMi\XiaoMiFlash
the FULL_EDL file I have produces a couldn't find script Error when loading into MiFlash
so far when attempting to flash all zips
I have started MiFlash with admin
unzipped FULL_EDL file to a folder in root C:\ and ensured there are no spaces in address.
Every time / Every file produces couldn't find script error when loaded into MiFlash
when I attempt to flash the file it says cannot receive hello packet and then times out with an error
Tried disabling anti-virus/firewall, still same error
upgraded MiFlash to 2017.4.24.0 ( older 2016 is included with axon7toolkit), this removes the couldn't find script error, but still not receiving a hello packet, gunna fiddle with the phone as I'm pretty sure the error is coming from there
YES!
rebooted phone, turned off, restarted into EDL, flashed the stock rom from zte site... is in chinese... but it works. Thank you Thank you
so adventure over, after all that I am back to 6.0.1...
Click to expand...
Click to collapse
What? It's in chinese?
Can you tell me the name of the file you used? Do you still have cell signal?

Choose an username... said:
What? It's in chinese?
Can you tell me the name of the file you used? Do you still have cell signal?
Click to expand...
Click to collapse
I got it from here: http://www.ztedevice.com/support
selected:- United Kingdom > Mobile Phone > Axon 7
it offers a file "AXON 7(ZTE A2017G) SD card software package(328540B2634ZTE A2017GV1.0.0B11)"
which hints at being compatible with A2017G... but is A2017V and is chinese, although you can change the language in settings there is still plenty here and there, plus chinese bloatware
and No, I didn't get cell signal.
I've gone back to Marshmellow, I will try again, didn't think it would be so different/difficult... Although wow at MiFlash.

FFS!!!! Relocked bootloader and bricked it!!! there should be a warning!
you gotta laugh,
I am a bit livid, I know the guides come with disclaimers, however, you'd think it would be an obvious important warning to make... DO NOT RELOCK YOUR PHONE.
FFS!

Dizzee said:
FFS!!!! Relocked bootloader and bricked it!!! there should be a warning!
you gotta laugh,
I am a bit livid, I know the guides come with disclaimers, however, you'd think it would be an obvious important warning to make... DO NOT RELOCK YOUR PHONE.
FFS!
Click to expand...
Click to collapse
Good lord...
You probably wiped out both IMEIs, now you relock out of the blue... Go to my DFU unbrick guide and stop doing dumb stuff :silly:

Choose an username... said:
Good lord...
You probably wiped out both IMEIs, now you relock out of the blue... Go to my DFU unbrick guide and stop doing dumb stuff :silly:
Click to expand...
Click to collapse
... after I finally got it working again (thanks for the assist), I thought relocking it was just making it secure again. I been rooting/unrooting and swapping out roms since the galaxy s2, who'd think you can't unlock and relock... I do think there should be warnings as it is too easy a mistake to make... lmao stop doing dumb stuff you start first
My phone is insured so I'm not overly fussed, but others will be less fortunate.

hello everywone...i have a troble to...my phone is A2017GV1.2.0B04 like this in post.
I bay this phone whit broken screen, i change the screen and try sim card but the phone is locked Whit google account... When I try my sim to test microphone, the phone it's work OK, but I unlock google account whit add tools and after that my phone don't have a service.
Phone tells no service or turned off airplane mode...what is not true... I can change the 4g/3g/2g connection to only 3g or something else... Wi-Fi and everything else work great but no service... The phone see what operator is on sim but no service... Somebody to help me please and tell me some tutorials how to fix?
I by this phone from Denmark and now I'm in Serbia... Eny help please
Thanks anyway Dragan
---------- Post added at 08:30 PM ---------- Previous post was at 08:27 PM ----------
Mistake,whit adb tools...

Zte axon 7 mini edl backup needed - lost stock recovery!

Hi Guys,
I would greatly appreciate any help. I have somehow lost the TWRP & Stock recovery to my ZTE ANXON 7 MINI.
I had a custom rom and decided to flash a stock update zip and that rendered my phone unusable. I have managed to get it too boot to 6.0.1 B9 Spanish rom. However i have NO RECOVERY to flash the original update for the UK B12 Rom.
Im using the EDL Tool to flash. If anyone has the stock recovery to the B9 6.0.1 Rom that would be a big help. Or a EDL full backup.
All links to the ZTE website are down as they are no longer allowed to use ANDROID.
Also to note i have tried to reinstall TWRP however im left with either a white screen or nothing just bootloop.
Unable to unlock bootloader also as i have no fastboot option as recovery is dead
Thanks.

This are (full flash)EDL roms(need to extract to folder "flash\full ",and flash(not recovery ))B12.6Android.EDL.EU.Version
B13.Android7.EDL.EU.Version

A18xcn said:
Hi Guys,
I would greatly appreciate any help. I have somehow lost the TWRP & Stock recovery to my ZTE ANXON 7 MINI.
I had a custom rom and decided to flash a stock update zip and that rendered my phone unusable. I have managed to get it too boot to 6.0.1 B9 Spanish rom. However i have NO RECOVERY to flash the original update for the UK B12 Rom.
Im using the EDL Tool to flash. If anyone has the stock recovery to the B9 6.0.1 Rom that would be a big help. Or a EDL full backup.
All links to the ZTE website are down as they are no longer allowed to use ANDROID.
Also to note i have tried to reinstall TWRP however im left with either a white screen or nothing just bootloop.
Unable to unlock bootloader also as i have no fastboot option as recovery is dead
Thanks.
Click to expand...
Click to collapse
If you have white screen or ZTE logo then I know how to solve it.
Funny enough, hook the phone to the pc, open adb command and type adb devices.
You will see you pc recognises the phone in adb as recovery.
If this happens let me know and I'll show you how to push the entire bootstack to data/media, then write all these files to each partition. After that your twrp will work and you are done.
These happened to me about 10 times now and I even created a bat file which I double click and it does all the operations at once then reboots straight into twrp. Quite cool actually.
Nevertheless I'm also interested in an edl ROM to umbrick another axon 7 mini I have which is totally, utterly bricked.
I have opened the phone (still opened) and I managed once to get the test point to work and connect to qcn configurator but since then I never got it to be recognised again.
Good luck
Cheers

bius88 said:
This are (full flash)EDL roms(need to extract to folder "flash\full ",and flash(not recovery ))B12.6Android.EDL.EU.Version
B13.Android7.EDL.EU.Version
Click to expand...
Click to collapse
Mate, you don't know how helpful this post was.
I have bricked this [nasty] phone about 10 times.
but yesterday I learn yet another lesson, after trying to flash a new splash screen, the phone went totally dead, connecting directly in DFU mode.
I sort of panicked because I didn't have a fresh data backup and there aren't full EDL ROM for this phone easily found on the web.
After focusing in making sure my laptop had the correct drivers (loader/bulk/adb) and after I got confident to use the deepflash cable to move from DFU to EDL, bulk device recognised, right click on it and update the driver to show the loader (901D) then I though what would be the next step.
I did not understand the MIflash tool and the version I had didn't seem to work at all I scratched my had for a while.
I then used the EDL tool, placed your files into the FULL folder and ran through the steps...….mate.....that was beautiful.
I ended up flashing the full B13 on top of the B09 and the system works perfect without any loss of data.
Having learnt all this, I went brave and confident I could rescue my other axon 7 min, which had been dead for over 2 months. Although I had to open it to access the test point, after about 50 or more attempts, I had tried lots of combinations, test point again etc.
It turned out I have left the phone plugged in to the PC with every plug disconnected except the usb board and went to do the washing up. 2-3min later my pc gave a sound, loader 901D was already ready and I repeated the exact process.
You basically saved both of my phones!!!! THANK YOU

Stuck in rescue mode after tried flashing stock firmware

Good evening! I hope you can help me.
I flashed LineageOS 14.1, but I wanted to go back to EMUI. I made all the wipes and tried to flash different stock firmwares through a forced update (volume buttons + power button), but it never worked. At that point, I read about a guy in this forum who suggested to create a flashable zip with Huawei Update Extractor: I followed the suggestion and tried to flash it with TWRP. No error was given, but when I tried to restart, TWRP told me I had no OS installed. I thought it was strange, so I tried to restart anyway. That's when I got in rescue mode. I can't get into the recovery and I can't use fastboot. What rescue mode shows me is:
RESCUE MODE
Attention!
Please update system again
Update User Guide:
*link*
*android avatar*
Error!
Func NO: 10 (boot image)
Error NO: 2 (load failed!)
Pressing the three buttons, I'm able to force an update. The problem is I can't find a firmware that doesn't get rejected. With Lollipop firmwares, it starts to install, but it fails at 12%. With Marshmallow ones, the installation process doesn't even start.
What can I do to make it work again? I'm very sad because this phone was gifted to me a couple of days ago and I already messed it up. I don't even know how to turn it off.
What can I do to get in fastboot mode? At that point, what should I do to flash the stock firmware? Or maybe do I need to find the first stock firmware ever installed into this phone to make the forced update work?
Please, I need help. Thank you in advance!
P.S. The phone's model is ALE-L21. I live in Italy, so I assume it's a European version.

Did you managed to fix this?

Jhon_Locke said:
Did you managed to fix this?
Click to expand...
Click to collapse
Not yet, but I'm working on it. I found out that the device is recognized by my PC if I follow these steps:
1. Connect the phone to the PC and wait for it to go in rescue mode;
2. Wait until the notification LED stops to blink;
3. Disconnect the USB cable;
4. Press volume - and power button;
5. Reconnect the cable.
At that point, the screen turns black and the phone is recognized as "㄰㌲㔴㜶㤸". I installed the drivers and now it's recognized as "HUAWEI USB COM 1.0". I should be able to reflash the partitions and make my phone work again, but I'm still trying to understand how to do it correctly.
Any help is appreciated!

ErikChimello said:
Not yet, but I'm working on it. I found out that the device is recognized by my PC if I follow these steps:
1. Connect the phone to the PC and wait for it to go in rescue mode;
2. Wait until the notification LED stops to blink;
3. Disconnect the USB cable;
4. Press volume - and power button;
5. Reconnect the cable.
At that point, the screen turns black and the phone is recognized as "㄰㌲㔴㜶㤸". I installed the drivers and now it's recognized as "HUAWEI USB COM 1.0". I should be able to reflash the partitions and make my phone work again, but I'm still trying to understand how to do it correctly.
Any help is appreciated!
Click to expand...
Click to collapse
fastboot detects your device when you plug it into your computer?
I mean, if you run "fastboot devices" it shows your phone?
I've had this same problem but with an P8 Lite 2017, after flashing some ROM that supposedly was the stock one and trying to flash recovery I ended up with my phone bootlooping into rescue mode, I was able to "bypass" this thing rebooting my phone like crazy, seriously like after 20 reboot it finally booted into the damn ROM and I never touched the phone again. Sometimes when the phone ran out of battery and tried to power it on the phone booted into rescue mode and again after some reboots it booted to Android but now I want to install a custom ROM or at the very least root this damn phone so that's why I'm asking you if you have solved this, if you do then probably if I follow the same steps I would be able to fix that screen, hopefully.
If you are able to flash something start with flashing all recoveries your update.app has, maybe that's the problem (at least in my phone it is).

Jhon_Locke said:
fastboot detects your device when you plug it into your computer?
I mean, if you run "fastboot devices" it shows your phone?
I've had this same problem but with an P8 Lite 2017, after flashing some ROM that supposedly was the stock one and trying to flash recovery I ended up with my phone bootlooping into rescue mode, I was able to "bypass" this thing rebooting my phone like crazy, seriously like after 20 reboot it finally booted into the damn ROM and I never touched the phone again. Sometimes when the phone ran out of battery and tried to power it on the phone booted into rescue mode and again after some reboots it booted to Android but now I want to install a custom ROM or at the very least root this damn phone so that's why I'm asking you if you have solved this, if you do then probably if I follow the same steps I would be able to fix that screen, hopefully.
If you are able to flash something start with flashing all recoveries your update.app has, maybe that's the problem (at least in my phone it is).
Click to expand...
Click to collapse
No, it doesn't show anything if I write that command...
I guess mine won't ever boot into the rom because it seems like there's no system installed. I made some researches and found out there are some softwares that let you reflash the partitions IF the phone is recognized as "HUAWEI USB COM 1.0". I'm still trying to figure out how to do it correctly though. I feel like if I do something wrong, then my phone won't probably turn on again.
In your case, you should be able to flash a custom rom without any issue. You just have to be very careful and inform you as much as you can: I don't want your phone to end up like mine?. Anyway, it seems pretty hard to go back to the stock rom, so think about it before you flash a custom rom. Also, make a Nandroid Backup is very important.