Huawei P20 Pro Fastboot/Rescue Mode - General Questions and Answers

Good Day to you all,
First of all i'm new to the forum and based in Ireland.
I have a Huawei P20 Pro single SIM 128gb.
On New Years Eve the battery died late, the next morning i plugged it into charge where straight away I realized it was stuck in boot loop and nothing I tried via forums etc or hard reset worked as the phone was unresponsive. I let it charge for 24 hrs. When taken off charge it is completely unresponsive is stuck on boot loop whilst on charge.
Playing around with the phone I can manage to get it into Fastboot and Rescue mode which says device reboot reason
AP_S_PMU 80
PWRONEXP_SHUTDOWN
vsys_pwroff_abs pwronexp_shutdown
volumnkey_down_press_process_func
Below this it says phone locked. When i try using HiSuite and go to option System Recovery and follow instruction it then says below "phone locked" rescue mode enter, however HiSuite says "your device is not supported".
The phone is inoperative and won't start.
Please help

I currently have this issue with my sons p20 Pro - Anyone with any ideas...
This is the only screen I can get it onto and nothing else....

No one? Nothing???

Related

[Help!] LG L22C (LG Power) - ERROR: Boot Certification Verify

Hello everyone,
I am brand new here and I have been searching for a solution to my current problem for over half a day now with no luck, and I'm hoping you guys could give me a definitive solution.
I am currently using a LGL22C (LG Power) Tracfone and I've come across a boot loop problem.
During the boot screen with the LG logo, I am presented with the following at the top left of the screen:
ERROR : boot certification verify
[450] ---------------------------------------------------------------
[450]
[450] Secure boot Error!
[450] Cause : boot certification verify
[450]
[450] ---------------------------------------------------------------
(Note: The boot loop continously restarts my phone while having 450 changing into 440 and vice-versa from time to time)
My phone was rooted via Kingroot and I've had it rooted for a little over 2 months. My phone is now in a bootloop due to the installation of Magisk v9. I accidentally installed it using Magisk Manager v2.1, which updated and installed everything that is "Magisk", which then prompt me to restart (which I did), and I'm now in this dilemma.
Again, I have searched for a solution for half a day and I did find some solutions that I thought would work, but unfortunately my phone can't:
1. Connect to my PC (No matter what I do, like update drivers)
2. LG Mobile Support Tool cannot detect nor support L22C model in its listing.
3. Doesn't have Emergency Mode, Download Mode, or Recovery Mode.
My phone CAN in fact go to Factory Reset, but that doesn't do anything in terms of solving my problem.
PLEASE I hope you can assist me. I am truly in a desperate situation.
Thank you!
UPDATE: I just tried to move my number to a different phone (LG Optimus Fuel) which I know that works for the time being. I deactivated it, added my other phone to the plan, but now it's affecting my other phone! I can somehow manage to get it to the Main Screen, but I can't uninstall anything, nor can I use the Phone app, because it states that my Contacts have stopped working (along with several other applications). My other phone has never done this before, nor did it have issues, but it started as soon as I tried to reactivate my number from my LG Power.
Sorry, this phone does not have any sort of recovery options if you trash the firmware. I am also the proud owner of a brick. I've ordered a replacement motherboard from eBay ($15) to perform a brain transplant, and then I'll have to start over.

Samsung Galaxy Note 4 weird issue..

Hey, I bought a galaxy note 4 which as the seller said "doesnt turn on anymore or gets stuck on boot logo".
I can confirm this issue. first time it booted up and said something with "reactivation lock" I couldn't read all cz it just rebooted and is now either stuck on boot logo or shows "recovery booting" in a blue font in the upper left corner but nothing happens. Also I can not boot into recovery mode. The hardware buttons are ok as I can click volume up during booting into download mode. I searched the whole internet and found this unbrick thread: https://pastebin.com/7KQxRRNF which I followed exactly. not the first time I'm fixing such issues but this time I'm out of knowledge. this thread didn't work it ended up in boot loop. I used the correct firmware I guess?..
there are plenty of firmwares. my model: N910F (vodafone branded I think cz it was showing a vodafone screen before it got this issue).
I tried using Samsung Kies but it says my model is not supported. same in SmartSwitch (not supported model). then I downloaded an older version of Kies 2.7 and it says connecting but even after 20 minutes or so nothing happens. I reinstalled the drivers several times, I'm using the OG Cable plugged into the motherboard directly. no hubs or frontpanel things (laptop). the only thing I can do with this phone is go into download mode. I don't know if this has something to do with this stupid reactivation lock in Download Mode it says "on". but I find only tutorials how to bypass this when you can boot the phone "aka samsung account trick". so useless for me.
Can I flash stock firmware with reactivation lock=on at all? or is that impossible? If so how can I disable this stupid lock? I never had a phone which broke my mind as hard as the note 4.. and I had many phones from many different brands and actually thought china phones like xiaomi are hard to crack or set back to stock n stuff..
Please help. I can not power it on nothing happens. battery removed for 5 minutes while holding the power key. nothing. only download mode is possible. and only if it's plugged into my pc. what the heck is wrong with this phone? sending it to support center is no option.

Pixel Bootloop problem

Hello, I would like to talk about my Google Pixel 32GB (8.1) that bootloops. Here are the things I know about it:
1. I bought it a while ago off eBay saying it was a bootloop problem. It sounded like a software problem, so I thought, I could fix this. Turns out I was wrong.
2. I can get it into the bootloader screen
3. It occasionally boots up but then freezes and starts looping again. It normally turns on whenever I turn it off for an extended amount of time. When it did turn on the first time, the first thing I did was turn on OEM unlocking but it says "unavailable to carrier locked devices".
4. Also whenever I leave it off for a while, I can get it into recovery mode.
5. I've tried factory resetting the phone but no hope
6. I can't put a recovery OTA on it because Android Pie is waiting to be downloaded. If I try to download that, it takes too long and the phone loops again
I would really appreciate some help with this and thank you in advance for helping me with it. :good:

Help, Mate 9 DEAD

Hello, I have the problem that my mate 9 of a sim has run out of charge, it does not turn on, I can not access fastboot, it's dead, this after I screwed it up wanting to install a custom rom and go back to stock rom, I stayed in the fastboot screen and update the system and gave me two errors, and if you could recognize the pc, but it did not last the load to be on that screen, the problem is that when you want to repair it with dcphoenix was left without a load in the process and It does not turn on, I do not know what else to do, help please.
he stayed in that process, as it appears in the capture, he stayed unloaded and he no longer lights
try online eupport on dc unlocker/phonix its on their website
my mate 9 is dead too no starts and no charger, no enter erecovery, no enter nothing, after try uptade 377 c432

Please Help! Phone bricked itself while charging

Hi,
My oneplus 6 appears to have either died or bricked itself during the night, I got the qualcomm crash dump mode screen on my device when I woke up this morning. My device isn't Rooted or flashed. I have since discovering this this morning I have been panic trying to sort out a solution I have tried MSM that gets to the download complete status. I remove the cable the device displays a splash screen and the screen stays black. Going into fast boot the bootloader and baseband are blank. Hoping someone would have a solution.
Thanks in advance.
I have the exact same issue, I've tried multiple MSM tools without any luck. Sometimes I can reach Fastboot mode, but most of the time it seems to be stuck in EDL mode. My phone was unrooted and stock.
Yep, happened for me too.. Still figuring out to fix this issue.

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