yashsingh1/xdaforums huggingface dataset:
[Huawei P20 Guides, News, & Discussion] nomone:
Yes but mate I cannot guarantee you that this is not risky. Try it at your own risk or wait for someone else :o

[MENTION=8477970]IProfessor[/MENTION] [MENTION=2642882]Pretoriano80[/MENTION]

[youtube]AXTQeSGJjGM[/youtube] :laugh: :laugh:
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
Can anyone with firmware EML-L29 C636 who is on emui 9.1 make screenshot from vendors info like this above, so i can see cust, preload and main to try again to downgrade
[Huawei P20 Guides, News, & Discussion] IProfessor:
official rollback of hisuite rollback feature:

URL:

https://query.hicloud.com:443/sp_ard_common/v2/onestopCheck.action?latest=true

Request:

{
"commonRules" : {
"C_Version" : "C636",
"DeviceName" : "EML-L29",
"PackageType" : "full_back",
"VendorCountry" : "hw-spcseas",
"productbaseversion" : "EML-LGRP2-OVS 10.0.0.160"
},
"versionPackageRules" : [
{
"rules" : {
"FirmWare" : "EML-LGRP2-OVS 10.0.0.160"
},
"versionPackageType" : 2
},
{
"rules" : {
"FirmWare" : "EML-L29-CUST 10.0.0.3(C636)"
},
"versionPackageType" : 3
},
{
"rules" : {
"FirmWare" : "EML-L29-PRELOAD 10.0.0.3(C636R1)"
},
"versionPackageType" : 4
}
]
}

Response:

{
"status": "0",
"versionPackageCheckResults": [{
"status": "0",
"autoPollingCycle": "1",
"components": [{
"componentID": 1,
"createTime": "2020-05-04T07:46:05+0000",
"description": "",
"name": "EML-LGRP2-OVS 9.1.0.388",
"pointVersion": "1",
"reserveUrl": "updatessl.dbankcdn.com",
"ruleAttr": "",
"url": "http://update.dbankcdn.com/TDS/data/files/p3/s15/G4398/g1755/v391708/f1/",
"version": "EML-LGRP2-OVS 9.1.0.388",
"versionID": "391708"
}],
"versionPackageType": 2,
"checkEnd": "1"
}, {
"status": "0",
"autoPollingCycle": "1",
"components": [{
"componentID": 1,
"createTime": "2020-04-22T07:39:05+0000",
"description": "",
"name": "EML-L29-CUST 9.1.0.9(C636)",
"pointVersion": "1",
"reserveUrl": "updatessl.dbankcdn.com",
"ruleAttr": "",
"url": "http://update.dbankcdn.com/TDS/data/files/p3/s15/G4398/g1755/v333680/f1/",
"version": "EML-L29-CUST 9.1.0.9(C636)",
"versionID": "333680"
}],
"versionPackageType": 3,
"checkEnd": "1"
}, {
"status": "0",
"autoPollingCycle": "1",
"components": [{
"componentID": 1,
"createTime": "2020-04-22T07:39:05+0000",
"description": "",
"name": "EML-L29-PRELOAD 9.1.0.14(C636R1)",
"pointVersion": "1",
"reserveUrl": "updatessl.dbankcdn.com",
"ruleAttr": "",
"url": "http://update.dbankcdn.com/TDS/data/files/p3/s15/G4398/g1755/v333681/f1/",
"version": "EML-L29-PRELOAD 9.1.0.14(C636R1)",
"versionID": "333681"
}],
"versionPackageType": 4,
"checkEnd": "1"
}]
}

Base: http://update.dbankcdn.com/TDS/data/files/p3/s15/G4398/g1755/v391708/f1/ - EML-LGRP2-OVS 9.1.0.388

Cust: http://update.dbankcdn.com/TDS/data/files/p3/s15/G4398/g1755/v333680/f1/ - EML-L29-CUST 9.1.0.9(C636)

Preload: http://update.dbankcdn.com/TDS/data/files/p3/s15/G4398/g1755/v333681/f1/ - EML-L29-PRELOAD 9.1.0.14(C636R1)
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
so i will have to put those packages in hisuite proxy and check rollback,and try i don't have to modify anything wright?
[Huawei P20 Guides, News, & Discussion] IProfessor:
Yup, but your phone will stay on region C636 ( Unless you try another CUST and preload )
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
i am trying now,have just started,can i after this use dload of C432 9.1 firmware and flash with otg?

will it revert back to original EML-L29C432

Or i can try again with C432 files,as it can change from C432 to C636 it can be reverse

---------- Post added at 06:21 PM ---------- Previous post was at 05:27 PM ----------

Many thanks for you,my phone has rolled back to emui 9.1 YEAH

Proffesor you are the best
[Huawei P20 Guides, News, & Discussion] IProfessor:
Glad to hear that! ?

Now when emui 10 arrives for your region it should be fixed by updating or maybe as you said a dload update will fix too, I don't know honestly
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
i am now flashing c432 with hisuite proxy

i have choosed base,preload and cust non rollback firmwares,and checked normal os,is that ok professor?
[Huawei P20 Guides, News, & Discussion] IProfessor:
I honestly have no idea, it might work and it might not lol.

my suggestion is trying to rollback to EMUI 9 then updating again to 9.1 using CUST and Preload of Europe ( or maybe official update just gonna detect Europe one by default, try rolling back to 9 then officially updating, see which C region it will give you in hisuite )
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
wow it is working,imagine it is installing the update,so now just to be sure i will use forced dload method with emui 9.1.0.380 EML-L29C432E10R1P12 just to be sure

I am so happy professor

God bless you and all the best wishes
[Huawei P20 Guides, News, & Discussion] nomone:
I don't understand why with a P20 you can do all this stuff and if you use a wrong region firmware on Mate 10 Pro you will brick it :eek:
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
i have done too much flashes and i didn't get bricked,now my p20 is again L29C432E7R1P11 now and everything is working,i use e recovery to recover to latest update(the safer way)

:good: :D
[Huawei P20 Guides, News, & Discussion] IProfessor:
You used Chinese preload as base firm! and I used Chinese base for global variant!

He though, he been using proper global firm and just missing around with the preload and cust....
[Huawei P20 Guides, News, & Discussion] rael75:
is there a reason people need to do all this fannying about and not just wait for the proper update,surley cant be much longer?
[Huawei P20 Guides, News, & Discussion] stexi95:
Can be :) and it is.. Middle of the june..
[Huawei P20 Guides, News, & Discussion] rael75:
cheers dont mid the wait
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
And Emui 10 is much smoother and faster overall my opinion with one week of use, it is amazing how Huawei optimized Emui 10 for P20, but i managed to restore to C432 with hisuite proxy without any brick and of course emui 9.1
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
can anyone with EML-L29 C432 E10R1P12 send me screenshot of vendor settings?

I just want to be sure if i am all ok
[Huawei P20 Guides, News, & Discussion] nomone:
Yes now seems to be everything ok :o
[Huawei P20 Guides, News, & Discussion] IProfessor:
You're one of the few who could safely enter Bermuda Triangle, survive and go back home alive and healthy! Sir, you're a legend and we're all jealous from you!

Tell us more about that adventure which you had!

I'm dying here from the anxiety to that update ?
[Huawei P20 Guides, News, & Discussion] nomone:
I share, today I tried maybe about 10 times but without success :crying:
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
I have my P20 since he was out maybe 2 years, never root, never tried to unlock bootloader or else, but i was always curious when emui 10 came out,first time i saw hisuite proxy app and the ability to try that risky update, imagine it was successful at the very first time, i really don't know how, but without you guys here i couldn't do all of that and my little knowledge to android since begging, when i tried prpxy with C636 emui 10,when it booted successfully i was scared and happy in the same time, when phone started i had to accept some terms of the update, it is much different from emui 9.1 and much faster overall, i like dark theme, not perfect because is IPS LCD screen, if it was super amoled it would be better, i immediately tried if my device is certified and it was, i was offered Assistant Today from Huawei, but is not still ready for my taste,font and sound, colors are also improved, battery too,i was enjoying to have emui 10 before too many P20 users, i am adventurous boy in soul,so it was risky but it worth it, then i was thinking about changing my phone to other region, cust and preload and wanted to go back,then i tried many cust, base and preload firmwares, but it didn't go till yesterday, professor helped me finding the right roll back firmwarr, even j was desperate trying, i said to myself let's try one more flash, hahahaha and then it roll back me in 9.1.0.388 successfully, i was smiled and happy, and then i was searching C432 preload, cust and base firmware was 9.1.0.370, i flashed and it was successfully, i didn't have brick or dead screen in any moment, now i am happy and sad, sad for emui 10 and happy for back to stock, it was an awesome journey with a lot of flashes and tries
[Huawei P20 Guides, News, & Discussion] DukeReyzio:
I followed all the steps but Hisuite always tells me that no update is available
[Huawei P20 Guides, News, & Discussion] IProfessor:
Please mention the exact steps you went through
[Huawei P20 Guides, News, & Discussion] DukeReyzio:
I installed Proxy Hisuite and I chose the firmwares, followed the tutorial, change the Hisuite proxy but looking for update there is nothing...
[Huawei P20 Guides, News, & Discussion] IProfessor:
Did you patch httpcomponent.dll by clicking on HTTP Component button? click on Show Low Debug, if there's no links being printed something is going wrong, be sure you don't have any manipulating content in your C:\Windows\System32\drivers\etc\hosts ( don't touch it in case you didn't modify it before ), if you patch and set proxy properly ( BE SURE YOU ARE SETTING THE PORT TOO, SCROLL DOWN THE SETTINGS TO SEE PROXY PORT AND SET IT TO 7777 ) it is supposed to work, if not then imma just go sleep and squeal :crying:
[Huawei P20 Guides, News, & Discussion] DukeReyzio:
Yes there are many links that I click on show low debug, it shows that everything works... I will see later thank you!
[Huawei P20 Guides, News, & Discussion] DMS:
Hi Vlatkonexus4,

Here's a screenshot of my P20 (EML-L29 C432). Bought it via Ama.. in Germany.

Best regards,

Simon
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
Flashing only for EML-L29 version emui 10 fromC636

Guys first you need to download hi suite proxy app from professor jtj from this link https://github.com/ProfessorJTJ/HISuite-Proxy/wiki/Application-Setup

Then install hi suite official version

First you need to open hi suite proxy app and start fill in:

Package Url http://update.dbankcdn.com/TDS/data/files/p3/s15/G5422/g1755/v391699/f1/full/update_full_base.zip EML-LGRP2-OVS 10.0.0.160

Cust pkg http://update.dbankcdn.com/TDS/data.../full/update_full_cust_EML-L29_hw_spcseas.zip EML-L29-CUST 10.0.0.3(C636)

Preload pkg http://update.dbankcdn.com/TDS/data...update_full_preload_EML-L29_hw_spcseas_R1.zip EML-L29-PRELOAD 10.0.0.3(C636R1)

Fill in like this,now in the app go to http component,it will open the directory of installed hi suite program automatically and click on httpcomponent.dll to patch hi suite program,don't turn off the hi suite proxy app.now open hi suite pc program and navigate to settings and click proxy settings,proxy address should be:127.0.0.1 and port :7777

Now that you set up everything connect your P20 and in hi suite pc program go to update,you will be prompted that emui 10 is ready to update

That is all,but i have done this and then reverted from C636 to C432 with the help of professor JtJ

Do it at your own risk,i was happy to do this without brick

Good luck who wants to try,this method worked for me !00% but changed my phone region and model,and e recovery doesn't work.

Special thanks to nomone and IProfessor

---------- Post added at 11:05 PM ---------- Previous post was at 11:03 PM ----------

Thanks and yeah it is ok,because i was reverted back from emui 10 c636 to emui 9.1 c432 and wanted to know if everything is ok again

:)
[Huawei P20 Guides, News, & Discussion] drmxmyt:
guys, with emui 10, my bootloader locked again. and my bootloader unlock code doesnt work anymore. says command invalid. oem unlock is checked at developer settings. cant flash custom recovery_ramdisk, so no root support as of yet.

dont want to go back 9.1, so have to live without root. :(
[Huawei P20 Guides, News, & Discussion] b2104:
new

Hi! I tried your links on my phone p20 eml-29c432 and after reboot, my phone can't verifiy the software.. any ideas?
[Huawei P20 Guides, News, & Discussion] IProfessor:
The links shared in this topic or come with the app?

What you exactly mean by not verify the software? Soft bricked or says installation failed after verifying package?
[Huawei P20 Guides, News, & Discussion] b2104:
vlatkonexus4 links for 10.0.160.. and failed after verifying package...
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
That is weird, just try to copy them from Firmware Finder again
[Huawei P20 Guides, News, & Discussion] b2104:
But where I can find the links for cust and preload in FF?
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
Open firmware finder and search for EML-L29, when searching finishes latest firmware is 10.0.160 for C636 base, scroll down you will find preload and cust for emui 10 for C636
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
Here
[Huawei P20 Guides, News, & Discussion] b2104:
Look what I have in FF

https://imgur.com/a/k9CaYvc
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
Just write EML-L29, i gave you screenshot
[Huawei P20 Guides, News, & Discussion] b2104:
Done.

https://imgur.com/a/Kl1sWYO

Just need to wait to download..
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
Ok i wish you luck,if you done it right then it should be upgraded, don't have to be rooted or bootloader unlocked, for me it work, but device changed to C636
[Huawei P20 Guides, News, & Discussion] b2104:
And if is changed to C636 is something bad ? Or what? I don't understand..
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
I am not sure what it will be with future ota, e recovery is not working, i have been with emui 10 from C636 om my C432 for one week, dark theme is awesome, smooth and much faster, only e recovery wasn't working at all, otherwise everything is working fine and awesome ??
[Huawei P20 Guides, News, & Discussion] b2104:
Yep.. it's working.. 10.0.0.160.. but with C636...
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
So how do you like Emui 10on P20
[Huawei P20 Guides, News, & Discussion] Necrodaemon:
https://xdaforums.com/showpost.php?p=78850439&postcount=1334

The method used is the same one that appears in the link or some other change must be made, since I have tried to install version 10.0.0.160 in my EML-L09C432 (which is approved according to FF), but the update does not appear to me In Hisuite, I have also modified the Windows host file

Someone who can post the exact procedure to update my L09C432 (HW, EU)
[Huawei P20 Guides, News, & Discussion] nomone:
Try HiSuite-Proxy method, there's a thread about it. Some people succesfully updated
[Huawei P20 Guides, News, & Discussion] IProfessor:
Updating to EMUI 10 requires preload and Cust packages which are location based and not supported by firmfinder however hisuite proxy does support that.

https://github.com/ProfessorJTJ/HISuite-Proxy/wiki/Application-Setup

https://github.com/ProfessorJTJ/HISuite-Proxy/wiki/FullOTA
[Huawei P20 Guides, News, & Discussion] gatonico:
Thank You, work like a charm, i update my p20 from Mexico Telcel Region C69 with your instructions.

Very Happy with EMUI 10
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
Always glad to help you guys
[Huawei P20 Guides, News, & Discussion] aour3k:
hey so i really want emui 10 because im tired of waiting on old firmware, i wanted to install it by Vlatkonexus4 method but i get this error and hisuite says that my firmware is up to date. please help

heres hisuite screenshot https://imgur.com/a/SFOvFFv
[Huawei P20 Guides, News, & Discussion] nomone:
Check cust pkg and preloaded pkg on proxy tool. It will work ;)
[Huawei P20 Guides, News, & Discussion] aour3k:
thanks, it works now :)
[Huawei P20 Guides, News, & Discussion] mkoutroulis:
i have issue as well after i setup the proxy address and port when i hit update on hisuite i receive no internet connection.Any solution?
[Huawei P20 Guides, News, & Discussion] IProfessor:
Perhaps you didn't patch httpcomponent.dll properly.

Run the app as admin,

Click on Httpcomponent button

Choose httpcomponent.dll

Save the patch in the same directory ( C:/Program files/Hisuite ) [ gotta close hisuite from task manager ]

Try again
[Huawei P20 Guides, News, & Discussion] mkoutroulis:
At the moment the patch was ok if fill in the right packages it shows to me that it excist available update,download was done. When its about to run the update i receive at once the message failed to update. Any help?
[Huawei P20 Guides, News, & Discussion] IProfessor:
Are you using approved firms? Share the links of the firms you're using.

Be sure you're on hisuite proxy version 1.7 rather than 1.8

https://github.com/ProfessorJTJ/HISuite-Proxy/releases/download/1.7.1/HiSutie.Proxy.rar
[Huawei P20 Guides, News, & Discussion] dizhell666:
Hello,

What are the risks of directly passing this update?

I looked at the whole post and from what I understood there will be a risk of no longer having an OTA update even for patches?

I'm French user
[Huawei P20 Guides, News, & Discussion] Thermaltake868:
Croatia EML-L29 still nothing.
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
Hey guys i have received emui 10 update, still dowoading
[Huawei P20 Guides, News, & Discussion] Allek84:
Great. Which is your location?
[Huawei P20 Guides, News, & Discussion] vlatkonexus4:
?? Macedonia, balkan
[Huawei P20 Guides, News, & Discussion] Allek84:
Thanks. Serbia still nothing.
[Huawei P20 Guides, News, & Discussion] brunoramones:
Can install c636 pn my c33?
[Huawei P20 Guides, News, & Discussion] Necrodaemon:
Whats version you have and region? i have EML-L09C432 with EMUI 9.1.0

EDIT: I change region to Argelia and i have update to Android 10
[Huawei P20 Guides, News, & Discussion] Matt8504:
Use support app to start updating. For now everything looks good, but nothing special. I don't know why we had to wait 6 months for this update. It doesn't bring anything major. I found Samsung one ui 2 much better and greater upgrade. Emui 10 looks just better than emui 9, but not much new on it.
[Huawei P20 Guides, News, & Discussion] Toivemursu:
Update

Got update in Finland
[Huawei P20 Guides, News, & Discussion] Thermaltake868:
Still nothing here in Croatia C432. Not via support app not and software update.
[Huawei P20 Guides, News, & Discussion] aour3k:
can somebody tell how to reverse from emui 10 c636e3 to emui 9.1.0 c432?

model eml-l29
[Huawei P20 Guides, News, & Discussion] Allek84:
C432 Serbia still nothing.

Poslato sa EML-L29 pomoću Tapatoka
[Huawei P20 Guides, News, & Discussion] Noel.89:
quick question for someone who may know i updated my mobile EML-L09 to emui 10 via the hisuite proxy method but then i tried to downgrade the same way but now it says "your device has failed verification any may not work" anddoesnt load up ..tried erecovery even dload. can anyone help before i send if off to get fixed ..please??
[Huawei P20 Guides, News, & Discussion] nomone:
We have to know your phone region...

Also, which files have you used to downgrade?
[Huawei P20 Guides, News, & Discussion] Noel.89:
my region was EML-L09-c706 in ireland when i updated to emui 10 it worked and changed region but it was downgraded that messed up i used the c432 rollback os that vlatkonexus4 to rollback

https://xdaforums.com/showpost.php?p=82485721&postcount=66
[Huawei P20 Guides, News, & Discussion] nomone:
Try to use your C706 files and Rollback OS feature in HiSuite Proxy

PRELOAD 9.1.0.12(C706)

http://update.dbankcdn.com/TDS/data...4/f1/full/changelog_preload_2dspvdf_nz_R1.xml

CUST 9.1.0.5(C706)

http://update.dbankcdn.com/TDS/data...v356853/f1/full/changelog_cust_2dspvdf_nz.xml

BASE EML-LGRP2-OVS 9.1.0.386

http://update.dbankcdn.com/TDS/data/files/p3/s15/G4398/g1755/v411684/f1/full/changelog_base.xml

They are rollback files.

Check if cust is approved because now I can't :o

Pay attention because maybe all your data will be wiped.

If you don't succeed in this way I'll provide you normal 9.1 update files to repeat the procedure with Normal OS feature
[Huawei P20 Guides, News, & Discussion] Thermaltake868:
Morning, I checked again today still nothing...
[Huawei P20 Guides, News, & Discussion] add.danut:
I've been looking for But we haven't found any

From what I saw appeared on firmwarefinder 10.0.0.161

Do you have any idea how I can update it but keep The C432?

Or how can I force the update faster?
[Huawei P20 Guides, News, & Discussion] Allek84:
Strange thing, on FF shows build. 160 but we all know that should be. 161

Poslato sa ELE-L29 pomoću Tapatoka
[Huawei P20 Guides, News, & Discussion] add.danut:
Someone who has emui 10.0.0.161 c432 with a print screen with the versions from * # * # 2846579 # * # * helps me
[Huawei P20 Guides, News, & Discussion] Noel.89:
but how can i use these when my phone does'nt start. when i press the power button it goes straight to the erecovery menu :( cant use hisuite :(
[Huawei P20 Guides, News, & Discussion] nomone:
Ohhhh so maybe you'll need other files because you have to restore your phone with Recovery OS method...

Just search for a 9.1 base, cust and preload (not rollback) that fit for your phone (you have to use your phone's own files).

Go to C:\Windows\Users\yourusername\AppData\Local\HiSuite\userdata\UpdateDogDev

Open HiSuiteConfig.xml and add an entry of your phone following the others. It's really simple, you have to add it under china region and also under global region (in Global there should be at least 4/5 entries). No matter of the chinese chars, the thing that HiSuite looks is the model, for example CLT-L09. SORRY but I'm from phone and can't make the string for you, but trust me it's simple.

Then put the phone in fastboot mode, open HiSuite-Proxy and provide it the links, check Recovery OS, open HiSuite and click on Recovery. Go forward until the update starts.

I really don't know if you can use the files I provided you (rollback) to do the trick, but first I advise you to try normal update files.

:o

Edit: I give you normal update files. Not sure if you have to use these or the rollbacks.

PRELOAD

http://update.dbankcdn.com/TDS/data...0/f1/full/changelog_preload_2dspvdf_nz_R1.xml

CUST

http://update.dbankcdn.com/TDS/data...v321755/f1/full/changelog_cust_2dspvdf_nz.xml

BASE

http://update.dbankcdn.com/TDS/data/files/p3/s15/G4398/g1755/v377079/f1/full/changelog_base.xml
[Huawei P20 Guides, News, & Discussion] stef654:
Is there curently any way of updating to 10.0.0.161 without PC (which should be available for all P20 variants ,10.0.0.160 is officially only for c6** models,if I got it right? ), some of variants already recieved update, but mine c33 is stuck at 9.1.0.372 from december. I have tried downloading from Firmware finder and flashing both .160 and 161, both failed, even both of them are available for my variant. I don't want to mess with flashing other firmware variants, because I'm afraid that recovery or OTA updates won't work normally.
[Huawei P20 Guides, News, & Discussion] brunoramones:
Portugal?
[Huawei P20 Guides, News, & Discussion] nomone:
If you're on EMUI 9.1 I think there are no ways without PC.

If you're already on EMUI 10 you can try to send an approved firmware (B160, B161) to eRecovery via FirmwareFinder because you don't need to update cust and preload, that are the same.

Sending an EMUI 10 to eRecovery via Firmware Finder (phone app) will not work or probably will brick your device
[Huawei P20 Guides, News, & Discussion] stef654:
I have read somewhere that C33 is Portugal version, but I'm far from Portugal, i'm just pissed off why some regions have to wait much longer for updates (every android literally)

What will happen if I install EMUI 10 with HiSuite and proxy method, with links for firmware,cust and preload provided in this topic on my c33, will I have any problems, [MENTION=5402386]vlatkonexus4[/MENTION] rolled back software to original variant for his phone,because he thought he won't recieve OTA updates. I would like to recieve other updates with just a click on my phone :)
[Huawei P20 Guides, News, & Discussion] nomone:
The first time he updated he used another region cust and preload, that's why he rolled back :o andOTA in that case would be a problem