yashsingh1/xdaforums huggingface dataset:
[Huawei Mate 10  Guides, News, & Discussion] ante0:
Here are some cust/preload for L09/L29 C432, C185 and C636

Preload BLA-L09 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v282008/f1/full/filelist.xml

Cust BLA-L09 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v280904/f1/full/filelist.xml

Cust BLA-L29 Asia (C636) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281580/f1/full/filelist.xml

Preload BLA-L29 Asia (C636) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281584/f1/full/filelist.xml

Cust ALP-L29 Asia (C636) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281585/f1/full/filelist.xml

Cust BLA-L09 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v280913/f1/full/filelist.xml

Preload ALP-L29 Asia (C636) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281586/f1/full/filelist.xml

Cust BLA-L29 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v280914/f1/full/filelist.xml

Preload BLA-L29 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v280923/f1/full/filelist.xml

Preload BLA-L09 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v280930/f1/full/filelist.xml

Preload BLA-L09 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v280933/f1/full/filelist.xml

Preload BLA-L09 Meafnaf (C185) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281627/f1/full/filelist.xml

Cust BLA-L09 Meafnaf (C185) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281628/f1/full/filelist.xml

Preload BLA-L09 Meafnaf (C185) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281629/f1/full/filelist.xml

Cust BLA-L09 Meafnaf (C185) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281659/f1/full/filelist.xml

Preload ALP-L09 Meafnaf (C185) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281765/f1/full/filelist.xml

Cust ALP-L09 Meafnaf (C185) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281766/f1/full/filelist.xml

Cust BLA-L09 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281160/f1/full/filelist.xml

Cust ALP-L09 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281194/f1/full/filelist.xml

Preload ALP-L09 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v281195/f1/full/filelist.xml

You'd probably have to experiment around some...
[Huawei Mate 10  Guides, News, & Discussion] tokoam:
Damn so much for the US users still no release for Bla-a09 model.
[Huawei Mate 10  Guides, News, & Discussion] durc12:
Hi.

when is it necessary to update with "3 files" and with "1 file"?

Thanks
[Huawei Mate 10  Guides, News, & Discussion] ante0:
We don't know... :/

Currently there are 6 different BLA-LGRP2-OVS 9.1.0.300 zips, only two works on C432 without getting an endless update nag (says phone has been modified and needs to be restored and it tries to flash 9.0 preload/cust but it doesn't help. and flashing cust/preload from 9.1 doesn't help either).

SO it seems they all are for different custs. Previously, up to B249 for C432, it was fine to flash any LGRP2 zip but this doesn't seem to be the case anymore.
[Huawei Mate 10  Guides, News, & Discussion] jjairojimenez89:
Hello, I have a BLA-L09 C521 with bootloader locked. I tried to install the EF file with cust C432 and it does not allow it. There is some way to install the update even if CUST is deleted

I really need help. I can't do anything with this Movistar cust 521 or update it, or dongrade

:llorando:
[Huawei Mate 10  Guides, News, & Discussion] Pretoriano80:
You can't do anything without unlocking your bootloader first.
[Huawei Mate 10  Guides, News, & Discussion] Sergiocubano1:
Hey pretoriano Thanks Bro very Thanks, work in normal mate 10 alp-l09View attachment 4797208

Enviado desde mi ALP-L09 mediante Tapatalk
[Huawei Mate 10  Guides, News, & Discussion] Pretoriano80:
Which base (update_full_base.zip file) you have used?
[Huawei Mate 10  Guides, News, & Discussion] Sergiocubano1:
yes root metod [emoji16]

Enviado desde mi ALP-L09 mediante Tapatalk

---------- Post added at 12:54 PM ---------- Previous post was at 12:52 PM ----------

that of the alp-l09 of emui 9.1

Enviado desde mi ALP-L09 mediante Tapatalk
[Huawei Mate 10  Guides, News, & Discussion] Pretoriano80:
I meant which version, specifically!

The full link if it's possible, because there are a dozen of them on hicloud.
[Huawei Mate 10  Guides, News, & Discussion] Sergiocubano1:
Download it from firmware Finder, the first one that appears from alp-l09

Enviado desde mi ALP-L09 mediante Tapatalk
[Huawei Mate 10  Guides, News, & Discussion] silverstream:
[MENTION=7116429]Sergiocubano1[/MENTION] can you share the steps you used to update using update_full_base.zip?
[Huawei Mate 10  Guides, News, & Discussion] Sergiocubano1:
I used the root method, which is here for download, and I downloaded the Zip update from the Finder firmware, and it's just the steps that the Pretoriano file you download here tells you

Enviado desde mi ALP-L09 mediante Tapatalk
[Huawei Mate 10  Guides, News, & Discussion] silverstream:
I've heard someone bricked the phone using update_full_base.zip,thus getting cautious.

To be sure, you used this right?

EMUI9.0_to_9.1_update_tool_root.zip -- This version will also install Magisk 19.3 Stable - Magisk Manager it's optional and can be skipped
[Huawei Mate 10  Guides, News, & Discussion] jjairojimenez89:
I managed to update.

My Mate 10 pro has the cust c521 to move latan BOOTLOADER LOCK!. It was my turn to download to EMUI 8 (for hisuite) and subsequently install the file that left EF by OTG. Now I have EMUI 9.1 does not release any CUST information. :RE
[Huawei Mate 10  Guides, News, & Discussion] Sergiocubano1:
Jaja It did not give me any problem, although I was afraid that the recovery by not being the same will not work, but it does work

Enviado desde mi ALP-L09 mediante Tapatalk

---------- Post added at 03:34 PM ---------- Previous post was at 03:29 PM ----------

I do not really face Pretoriano, but surely he will be a Chinese of these to wise, because in these of the Huawei is the best, thanks for always bro forever

Enviado desde mi ALP-L09 mediante Tapatalk
[Huawei Mate 10  Guides, News, & Discussion] xpdragon:
My EMUI 9.0 to 9.1 upgrade journey for ALP-L29(C636):

1. Used EMUI Flasher 1.2 ==> Update failed at 62% ===> soft brick

2. Used EMUI_9_0_TWRP_Flash_Unbrick_Tool.zip ===> successfully unbricked my phone

3. Used EMUI_9.0_to_9.1_update_tool_root_3_files.zip ===> successfully updated to EMUI 9.1 with Magisk root
[Huawei Mate 10  Guides, News, & Discussion] megapinky:
Hi Sergio, which ROM did you use specifically?
[Huawei Mate 10  Guides, News, & Discussion] Sergiocubano1:
The first 28091

Enviado desde mi ALP-L09 mediante Tapatalk
[Huawei Mate 10  Guides, News, & Discussion] Special_k7:
Can you make a tool which only install magisk ? Don`t know what i made at the final of installation of the rom, and not working magisk...Thanks.Tried already to patch my boot.img(i'm on 305 from ff), flashing, but not working, only with your tool was working magisk first time, now not....
[Huawei Mate 10  Guides, News, & Discussion] JazonX:
Is this tool compatible with any other devices like the P30/P30 Pro?
[Huawei Mate 10  Guides, News, & Discussion] Pretoriano80:
I only have a Mate 10 Pro, so i don't know if it works on P30/Pro!
[Huawei Mate 10  Guides, News, & Discussion] sdspieg:
First off - an enormous thanks to Pretoriano80 to keep development alive on what is still a pretty great phone! I haven't been able to make it fully work, but at least I can boot in twrp recovery again, which is reassuring :)

So my bootloader is unlocked, but I don't have root (I wasn't able for some reason to get magisk to install on 9.0). I should also add that I at some point installed what might have been a faulty ROM (I have BLA-A09, but it now says BLA-LGRP2). It still works pretty well, except for the GPS... But so I used the EMUI_9.1_Flasher and that worked well once I realized I had to put the USB-configuration to RNDIS (Ethernet - other options didn't work for me); that I had to unplug my phone after the 'Rebooting to fastboot, confirm with enter when in fastboot screen', wait for fastboot to appear and then plug the usb-cable back in; AND that I had to wait for not JUST the TEAMWIN loading screen, but the actual TWRP main menu (which takes a LOT longer to appear than it used to when everything still worked fine for me) before pressing the key.

The batch file then nicely pushes all required files, and then reboots in EMUI recovery (is that normal?). It verifies the file, and then says 'Software install failure'. Am I missing something here? Thanks!
[Huawei Mate 10  Guides, News, & Discussion] Todesdoktor:
Is there a difference between flash 1 file method than the 3 files?

I saw a screenshot from this post and doesn't appear the GPU turbo 3.0 but a P30 of a friend says that it have GPU turbo 3.0. maybe it's a dumb question but, This update is supposed to have it, why doesn't it appear? or is it because the update doesn't include it?
[Huawei Mate 10  Guides, News, & Discussion] debbuger:
Thanks for the Post. So i have upgrade BLA-L29C185 with TWRP NO ROOT METHOD. and got ota today morning for some fixes.

Below is the link of Full OTA.

http://update.dbankcdn.com/TDS/data/files/p3/s15/G1100/g104/v289451/f1/full/filelist.xml
[Huawei Mate 10  Guides, News, & Discussion] Pretoriano80:
If you got an OTA (which has the same version and it's around 185 mb), then you flashed the wrong base firmware, judging from the link it's the one designed for C800.

If i'm right, that OTA will keep coming back even if you will install it (you would need to be on stock recovery_ramdisk, not Magisk's patched).
[Huawei Mate 10  Guides, News, & Discussion] debbuger:
If possible can you please get a link for C185. I am currently like noob to Huawei. So don't know abt studying the links.

Ota comes up repeatedly after some time.
[Huawei Mate 10  Guides, News, & Discussion] Pretoriano80:
I can't get the link for that, because currently there's no way to know which one it is (all look the same).
[Huawei Mate 10  Guides, News, & Discussion] debbuger:
Then the only way to know is to flash every file until we get correct base. I will try that.
[Huawei Mate 10  Guides, News, & Discussion] lingarajug:
Is there an update for the US A09 variant?
[Huawei Mate 10  Guides, News, & Discussion] MicrosoftBug:
Is there a version of this for C636?
[Huawei Mate 10  Guides, News, & Discussion] ante0:
Booting is different in 9.1. It actually skips booting to recovery when holding volume up. Easiest way is to flash patched boot from fastboot, reboot to system then use the adb command "adb reboot recovery" to get to Magisk system. After that it should boot to Magisk each time you reboot. (aka 'recovery loop'. You can get out of this by holding volume up while having USB plugged in, if you need to get to eRecovery).

Another way is to boot to eRecovery and tap Wipe/factory reset. This will boot to recovery, which will boot to Magisk system, and no wipe occurs. Just make sure you have flashed Magisk.

Afaik there is no A09 sources for 9.1 available yet. They are not in G5029 anyway. Or you can test all of the 7 updates available for B300. One might work.

Identifying them is not easy as they're all named the same, BLA-LGRP2-OVS 9.1.0.300.

Same as above, no A09 sources have been found. I'm guessing they're on a different G.

G5029 holds L29-C636 Cust and Preload, so one of the update_full_base.zip should work.
[Huawei Mate 10  Guides, News, & Discussion] MicrosoftBug:
G5029? Sorry, not sure I follow. I've attached a screen shot of my current version.

View attachment 4798110
[Huawei Mate 10  Guides, News, & Discussion] Pretoriano80:
It's from the link address , like this example :

http://update.hicloud.com:8180/TDS/...full/update_full_preload_BLA-L09_hw_eu_R1.zip

Note the G5029 and the g0!
[Huawei Mate 10  Guides, News, & Discussion] sdspieg:
Thanks for that!

Is there a URL for those? I'd be happy to try them. And report back

Can these also be found there?
[Huawei Mate 10  Guides, News, & Discussion] k4fari:
Hi, i have updated my Mate 10 ALP-L29c185 from 9.0.0232 to 9.1.0.300 few moments ago with TWRP_EMUI_9.1_Flasher. A big thanks for this great tool and method.

Now when i restart the phone i still get a screen of bootloader unlocked press this and that etc, it irritates me, i need my phone to be the one as it was before (default start screen) with bootloader locked and original recovery. Is it possible ? How? Plz guide.

Regards
[Huawei Mate 10  Guides, News, & Discussion] Todesdoktor:
Hi, I used the EMUI9.0_to_9.1_update_tool_root.zip and my phone is bricked. Im trying to fix it and the zip here doesnt work for me (EMUI_9_0_TWRP_Flash_Unbrick_Tool.zip)

The script says this:

******* Flashing TWRP recovery *******

target reported max download size of 471859200 bytes

sending 'recovery_ramdisk' (23542 KB)...

OKAY [ 0.766s]

writing 'recovery_ramdisk'...

OKAY [ 0.139s]

finished. total time: 0.981s

- Rebooting..

- AFTER PRESSING A KEY, PLEASE UNPLUG YOUR PHONE AND HOLD PRESS THE VOLUME UP BUTTON UNTIL PHONE BOOTS IN TWRP.

- OTHERWISE THE SYSTEM WILL BOOT AND YOU WILL NEED TO START THE SCRIPT AGAIN.

- IF YOU MISSED THIS STEP, JUST CLOSE THIS SCRIPT USING THE RED CROSS AND OPEN IT AGAIN.

BUT my phone isnt rebooting, never. I tried to do it manually but it never enter on TWRP only on eRecovery.

What should I do?

EDIT:

I press enter and the process is OK

rebooting...

finished. total time: 0.011s

******* PLEASE PLUG YOUR PHONE BACK BEFORE CONTINUING. *******

******* Confirm with enter when your phone will reach at least TWRP loading screen *******

But it never enter to TWRP, only eRecovery.
[Huawei Mate 10  Guides, News, & Discussion] Pretoriano80:
Are you sure that you removed the USB cable before rebooting to TWRP?
[Huawei Mate 10  Guides, News, & Discussion] Todesdoktor:
Yeah it worked now. I changed the usb cable and worked fine. Now I want to install the 9.1 update with another of your methods, you know where to find the 3 files firmware? I checked on pro-teammt.ru ando all the 9.1 firmware have just 1 file...
[Huawei Mate 10  Guides, News, & Discussion] tbst1337:
Thank you for the tool. I managed to upgrade my p20 pro l29c432 without any error messages to 9.1.0.320(c432e5r1p9)

my sms are gone, but that doesnt matter to me. it does however ask me to update to the same firmware again and i got the red dot marking an update in the menu.

is there any way to get rid of it? i used the firmware that fits to my exact model and country.

thanks

Screenshot on imgur com/a/AmnufzY
[Huawei Mate 10  Guides, News, & Discussion] Majeh7:
Unlock Magazine

Thanks for the tool!

one doubt:

after the update i cannot find unlock magazine, am I the only one with this problem???

BLA-29 9.1.0.300(C432E4R1P11)
[Huawei Mate 10  Guides, News, & Discussion] Todesdoktor:
Has anyone used the update tool using three files? does anyone know where to get all three android 9.1 files?

I tried updating twice and both times it was bricked. So I want to try the three files method. Can anybody help me?

I have a Mate 10 non pro ALP-L29 c636 9.0.0.228
[Huawei Mate 10  Guides, News, & Discussion] oslo83:
Check post #80 for cust and preload.

Use the correct base for C636.
[Huawei Mate 10  Guides, News, & Discussion] Todesdoktor:
Thank you. So I can use the full_base_update with the two files on that post, right?
[Huawei Mate 10  Guides, News, & Discussion] oslo83:
bla-l29 c636 - 9.1.0.3xx
[Huawei Mate 10  Guides, News, & Discussion] Todesdoktor:
Excuse me but when I try to download the files nothing happens, only shows a page with xml code. How can I get the file?

This is what I see:

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<root>

<component>

<name>TCPU</name>

<compress>0</compress>

</component>

<maxStashInfo>52428800</maxStashInfo>

<supportPKI>0</supportPKI>

<vendorInfo logfile="changelog_preload_hw_spcseas_R1.xml" name="preload" package="update_full_preload_ALP-L29_hw_spcseas_R1.zip" precut_size="319270295" subpath=""/>

<GROUP version="G1.0"/>

<GBP version="NA"/>

<files>

<file>

<spath>changelog_preload_hw_spcseas_R1.xml</spath>

<dpath>changelog_preload_hw_spcseas_R1.xml</dpath>

<operation>c</operation>

<md5>926D6CB1A15923E8BFD7CD820C6E233E</md5>

<size>260477</size>

</file>

<file>

<spath>update_full_preload_ALP-L29_hw_spcseas_R1.zip</spath>

<dpath>update_full_preload_ALP-L29_hw_spcseas_R1.zip</dpath>

<operation>c</operation>

<md5>788D7978D95D690F9FE993EFDE4CDCA3</md5>

<size>208073217</size>

</file>

</files>

<packagetype>full</packagetype>

</root>
[Huawei Mate 10  Guides, News, & Discussion] Todesdoktor:
Hi. What files did you use? I could not download the cust or the preload from this post.

I've downloaded only the update_full_base.zip 9.1.0.300 280901 from FirmwareFinder
[Huawei Mate 10  Guides, News, & Discussion] ante0:
Replace filelist.xml with zip name listed in filelist. For example: update_full_preload_ALP-L29_hw_spcseas_R1.zip

It means the base is wrong for the cust/preload
[Huawei Mate 10  Guides, News, & Discussion] tbst1337:
sorry, not sure i completely follow you on this one:

1) i took the update from firmware finder which is CLT-LGRP2-OVS 9.1.0.320 (correct, right? :D)

2) i will now also download those two files:

a) Cust BLA-L29 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v280914/f1/full/filelist.xml

b) Preload BLA-L29 Eu (C432) http://update.hicloud.com:8180/TDS/data/files/p3/s15/G5029/g0/v280923/f1/full/filelist.xml​

3) flash again with 3 zip files and this tool EMUI_9.0_to_9.1_update_tool_root_3_files.zip

is this correct?

alternatively just use the 3 firmware files you provided? although it is v300 vs v320

BLA-L29C432B300

Firmware - http://update.hicloud.com:8180/TDS/d..._full_base.zip

Preload - http://update.hicloud.com:8180/TDS/d...9_hw_eu_R1.zip

Cust - http://update.hicloud.com:8180/TDS/d...-L29_hw_eu.zip
[Huawei Mate 10  Guides, News, & Discussion] ante0:
B320 CLT is not for Mate 10 Pro (BLA)

As stated previously, there are multiple update bases with no indication of what cust they belong to.

The links posted in this thread are for BLA (Mate 10 Pro) and ALP (Mate 10) unless stated otherwise.

I can scan later today for all full/cust/preload on hicloud and post it here.
[Huawei Mate 10  Guides, News, & Discussion] Todesdoktor:
Thanks, I already did it. Is it normal for the weight of the cust to be 20.46 KB and the preload 198 mb?
[Huawei Mate 10  Guides, News, & Discussion] tbst1337:
that would be really helpful if you could find it for p20 pro clt-l29. or if you could point me to how i can do it myself :o

thanks a lot! :)
[Huawei Mate 10  Guides, News, & Discussion] Dialaeialio:
The upgrade tool/script worked beautifully. Thank you so much for creating it, I just don't know about the Huawei file structures and update files to do it myself, and I always end up breaking EMUI by customizing it and by aggressively purging a lot of Huawei and Google stuff beyond the point of hoping to do an official OTA upgrade :o

I did the upgrade on Linux (don't forget to run fastboot as sudo on Linux!) and just ended up lazily copy pasting (and slightly editing) the commands from the batch file :) (Worth it just for the smoother gesture animations).

I have a (European) Mate 10 Pro - BLA-L29 C432 and this upgrade file worked great for me without any hiccups https://xdaforums.com/mate-10/how-to/firmware-version-mate-10-t3722019/post79923909

Just a heads up that if you are running edxposed with Riru on EMUI 9.0 you should de-install and/or disable all the Magisk modules first.

I tried patching my own custom ramdisk file with the EMUI 9 edxposed compatible Magisk, so solohsu's Magisk-v19.3.zip patched on the RECOVERY_RAMDISK_UNPATCHED_BLA_9.1.0.300.img. I renamed the Magisk-v19.3.zip to the default Magisk-v19.3(19300).zip name, put in the downloads folder, and it seems to recognize and pick this file locally, but I can't confirm it is actually doing this instead of picking a hidden downloaded somewhere else.

Regardless, running through this process and flashing the solohsu's Magisk seems to the phone get stuck in bootloop no matter what I do. This is usually the behavior I saw when the Magisk wasn't patched correctly somehow with the solohsu custom one. I was perhaps too optimistic to think I could upgrade with riru/edxposed enabled. But if anyone has some ideas on how to fix it, I'd be glad to hear them. Maybe just something in EMUI 9.1 broke edxposed. From my experience it is really easy to get stuck in a bootloop installing edxposed if you install things in the wrong order, took me like 10 tries and a lot of erecovery clean installs to finally figure out how to do it.

Edit: this is probably because installing Magisk requires an additional step to complete through the Magisk Manager to fully install it, do not upgrade while you have riru/edxposed running.

You can of course still do a regular boot into the system without Magisk to access your files and stuff, and do a potential backup (without root).
[Huawei Mate 10  Guides, News, & Discussion] ante0:
CLT-L29-CUST 9.0.0.5(C432) - http://update.dbankcdn.com/TDS/data...87/f1/full/update_full_cust_CLT-L29_hw_eu.zip

CLT-L29-CUST 9.0.0.5(C432) - http://update.dbankcdn.com/TDS/data...11/f1/full/update_full_cust_CLT-L29_hw_eu.zip

CLT-L29-PRELOAD 9.0.0.9(C432R1) - http://update.dbankcdn.com/TDS/data...full/update_full_preload_CLT-L29_hw_eu_R1.zip

CLT-L29-PRELOAD 9.0.0.9(C432R1) - http://update.dbankcdn.com/TDS/data...full/update_full_preload_CLT-L29_hw_eu_R1.zip

These are the ones I find, don't know what the difference are between them but I would probably try first cust and first preload first.
[Huawei Mate 10  Guides, News, & Discussion] Dialaeialio:
Be careful, if you go from a Magisk patched ramdisk to the unpatched default ramdisk on EMUI 9.1, then your phone can automatically wipe everything in a factory reset when you reboot . It can go straight to factory reset without ever asking for any kind confirmation!

It seems to be because when you choose the factory reset in the erecovery so you can boot with magisk root, then erecovery remembers to boot into the factory reset until it actually is available. So when the unpatched ramdisk is flashed, and is available again, it automatically loads on the next boot by default without a warning. Thus wiping everything on your phone even though you rebooted many times because it is still stuck in the recovery loop. This is new default behavior with EMUI 9.1 as it just keeps booting into the recovery (and the recovery will load the factory reset) by default until you actually select reboot from the erecovery.

So how do you reset to a normal boot? You first need to first manually go to the Huawei erecovery (insert usb and volume up), select reboot, so it goes from there into the a regular non-recovery boot. Double check in the Magisk Manager that Magisk is not loaded, just to be safe I would reboot and go straight to fastboot and flash the unpatched Magisk with without doing anything else first.

Edit: Some more additional info and tips,

Pretoriano80 pointed out that you can delete the /cache/recovery/command file after doing the reset trick to make sure a factory reset isn't triggered by the eRecovery.

I am probably not the only fool who will have learn this the hard way :( Please be careful. I had most of my stuff backed up luckily in a big backup I did a while ago and the rest is mostly in the cloud. But I still lost all more recent things which weren't in the cloud.