[Guide] Flash APPROVED Firmwares on LOCKED BOOTLOADER with NO WIPE!

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guider8888

New member
Feb 4, 2020
3
5
Hi Guys, I need Small expertise guidance before Firmware upgrade.
I have Huawei Y9 Prime current version info as below. ( I have EMUI 10 and Plan to upgrade EMUI 12)
Base Package: STK-LGRP6-OVS 10.0.0.427
Cust Package: STK-L22 10.0.0.7 (C636)
Preload PKG: STK-L22-PRELOAD 10.0.0.7 (C636R2)
Region (HW-SPCSEAS)

Huawei didn't release EMUI 12 update to my country but they have released to other Asia Pacific (Except us somehow)
IN HiSuite Proxy I Could find out this ROM, all matching except base package.

Base Package: STK-LGRP10-OVS 102.0.0.225
Cust Package: STK-L22-CUST 102.0.0.2 (C636)
Preload PKG : STK-L22-PRELOAD 102.0.0.1 (C636R2)
Region (HW-SPCSEAS)

Will this firmware work on my mobile? Due to unmatching of Base package will it be problem (Soft Brick?)
Appreciate your help on this...
Thank you Very much!!!
 

mamajee

Member
Nov 2, 2015
12
0
OPPO Reno
Hi Guys.
I updated my Huawei P30 Pro to EMUI 12, after which when i call or somebody call me, the caller probably 4 to 5 second can not hear my voice and after 4 to 5 seconds he can hear my voice...... Does any body has the problem and if yes how to resolve........ experienced persons are welcomed to reply, please. also, I resetted my network but did not resolve the problems.
 

bontabela73

Senior Member
Aug 27, 2015
138
62
Hi Guys.
I updated my Huawei P30 Pro to EMUI 12, after which when i call or somebody call me, the caller probably 4 to 5 second can not hear my voice and after 4 to 5 seconds he can hear my voice...... Does any body has the problem and if yes how to resolve........ experienced persons are welcomed to reply, please. also, I resetted my network but did not resolve the problems.​

Hi,

Which carrier's SIM card do you have in your device?

I read similar reports in the P30 Pro topic of a Hungarian forum and a couple of forum members complained about the same issue. It turned out that they all have Vodafone SIM cards in their devices and the issue is in the network from the carrier side. Some of these people also tried resetting the network settings or even the device but no luck.

The issue might not be related to the EMUI version, since some forum members had reported such issues prior to the release of EMUI 12.

So, you should contact your carrier's customer service and tell them about the problem.​
 

mamajee

Member
Nov 2, 2015
12
0
OPPO Reno

Hi,

Which carrier's SIM card do you have in your device?

I read similar reports in the P30 Pro topic of a Hungarian forum and a couple of forum members complained about the same issue. It turned out that they all have Vodafone SIM cards in their devices and the issue is in the network from the carrier side. Some of these people also tried resetting the network settings or even the device but no luck.

The issue might not be related to the EMUI version, since some forum members had reported such issues prior to the release of EMUI 12.

So, you should contact your carrier's customer service and tell them about the problem.​
Thanks for ur valuable reply.... I will then contact to carrier operator if he can resolve the problem....... Anyhow thanks again.... Moreover i m in pakistan and not using voda fone..... Also i will check another carrier sim card.... May be the issue with this sim..... It is further mentioned that on earphone connected vis BT the problem does not arise and we can hear voices from both side
 
Last edited:

bmwh2r

Member
Nov 3, 2022
7
0
Hello everyone
I know it doesn't perfectly match the thread but maybe the discussed guide might help in my case as well.

Since 1 week i'm not able anymore to access my Huawei P30 Pro. I've installed the (automatically overnight update to 12.0.0.139). Since then i get asked a 4 digit pin (the correct pin doesn't work).

furthermore i'm not able to go into recovery mode, so i can't wipe data. but i don't care if i loose all the data, i just want to get access again to my phone.

Any idea how i could solve the issue? does this guide maybe help in my case, any idea about such cases?

Thank you in advance
 

mamajee

Member
Nov 2, 2015
12
0
OPPO Reno
Hello everyone
I know it doesn't perfectly match the thread but maybe the discussed guide might help in my case as well.

Since 1 week i'm not able anymore to access my Huawei P30 Pro. I've installed the (automatically overnight update to 12.0.0.139). Since then i get asked a 4 digit pin (the correct pin doesn't work).

furthermore i'm not able to go into recovery mode, so i can't wipe data. but i don't care if i loose all the data, i just want to get access again to my phone.

Any idea how i could solve the issue? does this guide maybe help in my case, any idea about such cases?

Thank you in advance
May be u have to restore ur firmware via testpoint or any XDA user can help u with another method so they r welcome
 

anxname

Member
Jul 3, 2016
7
0
Hello,

does anyone here know how I can get back to EMUI 9 on the P30 Pro?

It worked fine from EMUI 12 to EMUI 10.
I have already tried some of the EMUI 10 and EMUI 9 versions. With EMUI 10, I no longer have a USB connection to the PC. So I tried the other tests of EMUI 9 versions via USB OTG or Micro SD. However, the installations of the EMUI 9 versions I had tried fail.
My device is a P30 Pro (C431)
Currently I am on the 10.0.0.173

If anyone has experience with this, I would greatly appreciate any options.
 

Kris Rosa

New member
Jul 8, 2019
2
0
Huawei P30 Pro
Greetings,

I'm writing this hoping that someone here will be able to help me with what seems to be an impossible situation I've managed to get my phone into.

I'd consider my experience to be moderate as far as repairing phones goes..I'm no where close to being an expert so please go easy on me.

Before I describe the phone and it's issues, I'd just like to mention that I have access to ChimeraTool Pro, I DO have a working HarmonyOS test point cable and I AM able to boot from USB COM 1.0 serial port to bootrom/factory mode. (Made the cable myself😎)

The phone is branded as a P30 Pro V0G-L04 on the back cover so I'm assuming that's correct. It IS the original back cover I'm positive.

Here is what ChimeraTool is able to tell me...

----------------------------------------------

Device Model: VOG-L29

Current software version: VOG-L04 11.0.0.170(C792E10R1P3)

Hardware version: Ver2.3

Boot info: locked

Image check: secure image verify fail

Android version: 10

Battery state: 0

Key version: huawei_key_v1

Rescue version: rescue0.6

Phone info: (bootloader) main version do not exist in oeminfo!

VendorCountry: claro/la

Base version: VOG-LGRP2-OVS 11.0.0.170

Cust version: VOG-L04-CUST 11.0.0.10(C792)

Preload version: VOG-L04-PRELOAD 11.0.0.3(C792R1)

-----------------------------------------

I'm pretty sure I've done a really good job messing this phone up by modifying the OEMinfo, reading/writing cert files and attempting to flash an absurd amount of firmware onto it in a desperate attempt to get it going.
Currently, when I attempt to update it via OTG/Flash Drive, it sticks at 5% then just reboots a minute later. Also, regular fastboot mode is non functional. My computer will not recognize the device whatsoever without using test points.

Any help or advice would be greatly appreciated. I've all but thrown in the towel at this point...is there any hope for this poor phone?

Thanks in Advance,

-K.R.
 

bontabela73

Senior Member
Aug 27, 2015
138
62
Greetings,

I'm writing this hoping that someone here will be able to help me with what seems to be an impossible situation I've managed to get my phone into.

I'd consider my experience to be moderate as far as repairing phones goes..I'm no where close to being an expert so please go easy on me.

Before I describe the phone and it's issues, I'd just like to mention that I have access to ChimeraTool Pro, I DO have a working HarmonyOS test point cable and I AM able to boot from USB COM 1.0 serial port to bootrom/factory mode. (Made the cable myself😎)

The phone is branded as a P30 Pro V0G-L04 on the back cover so I'm assuming that's correct. It IS the original back cover I'm positive.

Here is what ChimeraTool is able to tell me...

----------------------------------------------

Device Model: VOG-L29

Current software version: VOG-L04 11.0.0.170(C792E10R1P3)

Hardware version: Ver2.3

Boot info: locked

Image check: secure image verify fail

Android version: 10

Battery state: 0

Key version: huawei_key_v1

Rescue version: rescue0.6

Phone info: (bootloader) main version do not exist in oeminfo!

VendorCountry: claro/la

Base version: VOG-LGRP2-OVS 11.0.0.170

Cust version: VOG-L04-CUST 11.0.0.10(C792)

Preload version: VOG-L04-PRELOAD 11.0.0.3(C792R1)

-----------------------------------------

I'm pretty sure I've done a really good job messing this phone up by modifying the OEMinfo, reading/writing cert files and attempting to flash an absurd amount of firmware onto it in a desperate attempt to get it going.
Currently, when I attempt to update it via OTG/Flash Drive, it sticks at 5% then just reboots a minute later. Also, regular fastboot mode is non functional. My computer will not recognize the device whatsoever without using test points.

Any help or advice would be greatly appreciated. I've all but thrown in the towel at this point...is there any hope for this poor phone?

Thanks in Advance,

-K.R.
Hi,

I am not an expert either. However, I do not understand this: the device model is VOG-L29 but the firmware is L04. The L29 model is the dual-SIM variant and the L04 is the single-SIM one.

Is it possible that you have the wrong firmware installed? What would happen if you installed the L29 firmware version? The latest version for the L29 variant is 12.0.0.144, which contains the November 2022 securtiy patches.​
 

Kris Rosa

New member
Jul 8, 2019
2
0
Huawei P30 Pro
Hi,

I am not an expert either. However, I do not understand this: the device model is VOG-L29 but the firmware is L04. The L29 model is the dual-SIM variant and the L04 is the single-SIM one.

Is it possible that you have the wrong firmware installed? What would happen if you installed the L29 firmware version? The latest version for the L29 variant is 12.0.0.144, which contains the November 2022 securtiy patches.​
I'm pretty certain it's actually a V0G-L04 model and I switched the info around in ChimeraTool in an attempt to get it going with incorrect firmware. Do you happen to have a link to the firmware you mentioned? At this point I'm willing to try anything.
 

bontabela73

Senior Member
Aug 27, 2015
138
62
I'm pretty certain it's actually a V0G-L04 model and I switched the info around in ChimeraTool in an attempt to get it going with incorrect firmware. Do you happen to have a link to the firmware you mentioned? At this point I'm willing to try anything.
Unfortunately, I cannot provide a link to this specific firmware version. I do not know much about flashing firmware and I do not flash firmware either. My phone has the European region firmware (C431) installed. Maybe you should look around in this section.

I hope you will be able to make your P30 Pro work fine.​
 

bikernzrh

Member
May 3, 2014
7
0
hi there,
I may have made a mistake by purchasing a what looked like a pristine P30pro new edition. during set up I discovered that it didn't update beyond 10.1.0.101 (EMUI 10.1.0). while I'd be fine with that EMUI version I'm concerned about the patch level dating from 1st April 2020, along with Kernel dating back to 2020 as well.

investigating a bit deeper I found it to be a C891 version - which apparently was not meant for retail 🤔

question: has anyone ever successfully flashed such a device with a C432 or other commercial version so that it at least OTA patches to the last available level?

thanks for any hints.
bikernzrh
 

mamajee

Member
Nov 2, 2015
12
0
OPPO Reno
hi there,
I may have made a mistake by purchasing a what looked like a pristine P30pro new edition. during set up I discovered that it didn't update beyond 10.1.0.101 (EMUI 10.1.0). while I'd be fine with that EMUI version I'm concerned about the patch level dating from 1st April 2020, along with Kernel dating back to 2020 as well.

investigating a bit deeper I found it to be a C891 version - which apparently was not meant for retail 🤔

question: has anyone ever successfully flashed such a device with a C432 or other commercial version so that it at least OTA patches to the last available level?

thanks for any hints.
bikernzrh
If OTA is not available in your phone, you may connect the phone with PC and update the same via HiSuite. How to do this, you may search the forum
 

Nunsho

New member
Feb 6, 2023
1
0
Hey guys, I recently downgraded my Huawei P30 pro (VOG-L29 C431) to Emui 9.1 using HiSuit Proxy and now I'm kinda stuck. I'm not getting any updates, usb debugging is disabled, in recovery mode there is no Update option and I also got no NM, what I do have is this usb to usbc adapter but i don't think that it's helping since usb debugging is off. Does anyone know how I can get back to Emui 11 or 12?
 

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