Have a locked optus Mate 20 Pro, used Hiproxy to upgrade to EMUI 12, I rolled back and broke the OS - Huawei Mate 20 Pro Questions & Answers

Hey guys im very new here take it easy on me.
I have a LYA-L09 model Mate 20 pro. For the life of me im not sure what i did wrong.
So i thought i would be clever and download EMUI 12 via the hiproxy plugin seen below and hisuite to my perfectly working stock Optus locked phone Australian version. It was great for a while and then i didnt like that gpay wasnt working so i tried rolling back and failed miserably, when it reboots a black screen with yellow text tells me the device has loaded a different operating system.
Maybe its screwed im not sure but i think you might be able to tell me. I tried All these stock roms seen below to downgrade using the Dload method with usb stick attached to phone using the updater in the recovery mode and no luck, lots of fails.
So now i have nothing but a stock recover mode with no usb debugging enabled i cant even fastboot adb even when im in fastboot mode holding power and down, Tried the wireless recovery method and failed,.
Is there a way to at least fix the EMU 12 and at least getting something to work if i cant rollback anymore, or do i pretty much have a bricked phone.
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This is what i used with hiproxy to get emui 12, With my phone with no usb debugging enabled and no way for Hiproxy to connect anymore to my phone, is there a way to get these packages below so i can reinstall 12 if i can't rollback anymore or is this only done with hi proxy and enabled debugging. I have probably missed a bunch of information and i apologise hopefully someone get shed some light.

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I have Eft pro but im not sure if this is going to do anything...

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Oh man no good at all, I plugged mine in to update it and it won't find the emui 12 update. I also have the other version of the phone (LYA-L29) and it updated via this method zero problem was hoping for the same result with the (lya-l09) variant but can't find a version.

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Have you tried to download one of the old AU firmware? sounds like your having trouble getting into recovery though which may not help

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Glomas1 said:
Have you tried to download one of the old AU firmware? sounds like your having trouble getting into recovery though which may not help
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I can pretty much get into recovery just no usb debugging, all those firmwares you see in my post ive tried.. I cant find any aussie firmware for my LYA-L09, pretty sure this is the reason why its not flashing, if anyone has for my phone would be great, i think its C432.

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Bummer, have you tried recovery in fast boot with a flash drive instead of using the computer?
Also from memory I think from recovery or fast boot you use different drivers with the PC as it does not recognise the phone properly otherwise

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Glomas1 said:
Bummer, have you tried recovery in fast boot with a flash drive instead of using the computer?
Also from memory I think from recovery or fast boot you use different drivers with the PC as it does not recognise the phone properly otherwise
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Yeah i saved the firmware in a folder called dload on my usb to c thumb drive and then the firmware either fail or install and then it goes back to the "your device has loaded a different operating system" just constant loop

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Zymdings said:
Sí, guardé el firmware en una carpeta llamada dload en mi memoria usb a c y luego el firmware falla o se instala y luego vuelve a "su dispositivo ha cargado un sistema operativo diferente" solo un bucle constante
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Hello Zymdings, something happened to me, similar to my mate 20 pro LYA-L09, I had it with android 10 and EMUI 11, with carrier ROM (TIGO C045) I changed it in order to update it to emui 12 because I didn't get an update yet that many times the telephone operators block updates, so I looked for a stock ROM for my LYA-L09 model, and since I couldn't find a ROM with emui 11, which is what I was on, I decided to install a ROM with emui 10 but from EUROPE (C432 ) because this is the one that has the update to emui 12 (DATA I got it from the firm finder V2 servers, I leave you the link: https://professorjtj.github.io/v2/) “YOU MUST PLACE YOUR CELL PHONE MODEL IN THIS PAGE"
I clarify that the method I used was by "dload", I will look for the download link from where I downloaded the ROM with European emui 10, since my internet is slow to upload almost 5 gb, apologies.
The ROM has a folder called dload which contains 3 files.
When installing by dload dialing from the cell phone *#*#2846579#*#* good is the process by dload you can search in inter or if you can't find it ask me friend.
Initially it installed well because I got to 100%, but when I restarted the same thing happened to you, that is to say that I got "the device has loaded a different operating system".
Salio que falló, buscando en internet en XDA encontré que era porque la ROM era diferente a la que tenía instalada entonces lo que hice fue cambiar lo siguiente: (solo estos dos archivos los cambié, el “update_sd_base” lo deje asi)
update_sd_cust_LYA-L09_hw_eu POR update_sd_cust_LYA-L09_tigo_la
update_sd_preload_LYA-L09_hw_eu_R1 POR update_sd_preload_LYA-L09_tigo_la_R1
Cuando hice esto, estaba instalado y listo, pensé que todo estaba bien, ya no tenía el inicio de TIGO, que era la ROM del operador, pero luego me di cuenta de que mi batería no cargaba rápido a pesar de que tenía mi cargador con una super carga que mi computadora no reconoció. Teléfono móvil. Lo que pasa es que cuando averigüé más me enteré de lo siguiente:
- ALERTA: La actualización a la última versión de EMUI 11 desactiva la carga rápida, el arranque rápido, la conexión USB y TestPoint de su teléfono.
- La única forma de solucionarlo es actualizar vía OTA, Erecovery o Dload por tarjeta de memoria a la última versión de EMUI 11.
Todo lo demás creo que funciona bien, algo más les cuento que en mi celular no aparece el explorador de archivos por lo que tuve que instalar uno desde la play store.
NOTA: He probado por Erecovery, por OTA y no lo he conseguido, mi esperanza es encontrar una ROM stock para hacerlo de nuevo por dload pero hasta hoy y casi una semana no he encontrado nada. Si tienes alguna información, te lo agradecería.
My whatsapp Bolivia +591 63931217 I am Daniel.

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Yeh im not able to boot into the mobile operating system im actuallyt unable to enable debugging forgot to switch it on, and now im screwed Do you know if im able to fix the emui 12 that i damaged.. I cant download it anywhere only via hiproxy which i have no access to now because no fastboot

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Zymdings said:
Hey guys im very new here take it easy on me.
I have a LYA-L09 model Mate 20 pro. For the life of me im not sure what i did wrong.
So i thought i would be clever and download EMUI 12 via the hiproxy plugin seen below and hisuite to my perfectly working stock Optus locked phone Australian version. It was great for a while and then i didnt like that gpay wasnt working so i tried rolling back and failed miserably, when it reboots a black screen with yellow text tells me the device has loaded a different operating system.
Maybe its screwed im not sure but i think you might be able to tell me. I tried All these stock roms seen below to downgrade using the Dload method with usb stick attached to phone using the updater in the recovery mode and no luck, lots of fails.
So now i have nothing but a stock recover mode with no usb debugging enabled i cant even fastboot adb even when im in fastboot mode holding power and down, Tried the wireless recovery method and failed,.
Is there a way to at least fix the EMU 12 and at least getting something to work if i cant rollback anymore, or do i pretty much have a bricked phone.
View attachment 5716995
This is what i used with hiproxy to get emui 12, With my phone with no usb debugging enabled and no way for Hiproxy to connect anymore to my phone, is there a way to get these packages below so i can reinstall 12 if i can't rollback anymore or is this only done with hi proxy and enabled debugging. I have probably missed a bunch of information and i apologise hopefully someone get shed some light.
View attachment 5716997
Click to expand...
Click to collapse
Hi. I have an Australian Huawei Mate 20 Pro LYA-L29 (C636) and I'm stuck with Android 9, didn't get any updates for the last 3 years. Could you give detailed instructions how to flash EMUI 12 (C432) via HiProxy please? Thanks

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Zymdings said:
Hey guys im very new here take it easy on me.
I have a LYA-L09 model Mate 20 pro. For the life of me im not sure what i did wrong.
So i thought i would be clever and download EMUI 12 via the hiproxy plugin seen below and hisuite to my perfectly working stock Optus locked phone Australian version. It was great for a while and then i didnt like that gpay wasnt working so i tried rolling back and failed miserably, when it reboots a black screen with yellow text tells me the device has loaded a different operating system.
Maybe its screwed im not sure but i think you might be able to tell me. I tried All these stock roms seen below to downgrade using the Dload method with usb stick attached to phone using the updater in the recovery mode and no luck, lots of fails.
Así que ahora no tengo nada más que un modo de recuperación de stock sin la depuración USB habilitada. Ni siquiera puedo iniciar el adb rápido, incluso cuando estoy en el modo de inicio rápido manteniendo presionado el botón de encendido y apagado. Intenté el método de recuperación inalámbrica y fallé.
¿Hay alguna manera de al menos arreglar el EMU 12 y al menos hacer que algo funcione si ya no puedo retroceder, o tengo un teléfono bloqueado?
View attachment 5716995
Esto es lo que usé con hiproxy para obtener emui 12, con mi teléfono sin depuración USB habilitada y sin forma de que Hiproxy se conecte más a mi teléfono, ¿hay alguna manera de obtener estos paquetes a continuación para poder reinstalar 12 si puedo? t revertir más o esto solo se hace con hi proxy y depuración habilitada. Probablemente me he perdido un montón de información y me disculpo, espero que alguien arroje algo de luz.
View attachment 5716997
Click to expand...
Click to collapse
al final que hizo?