Retail demo HELP!! - Huawei P20 Questions & Answers

Hello friends, excuse me, I am using a translator. My problem is that I have the P20 and it has the "Retail Mode". What I want to know is, how to remove the retail mode and leave the normal firmware .... I was told that I must have the bootloader unlocked but now Huawei is not giving me nose how to do it and wanted to know if someone can help me. I will leave a screenshot of my phone to see if someone helps me. I am from Chile thank you very much and apologize for the English. Greetings to all
I can not put image but I leave the following information
Model: EML-L29
Compilation: EML-L29 8.1.0.130D(OTC652)

Same problem here
I have the exact same model with the exact same build version. Huawei told me that I should take the phone to a Service Center so they can change the software. There are two Huawei service centers in my city, I took the phone to one of them and they told me that Huawei doesn't have the software capable of being installed and being accepted by the unit, but I guess that it was just an excuse of the technician, it looks like it won't be cheap and easy to ask Huawei to change the software.
Does anyone know any other options?
---------- Post added at 03:15 PM ---------- Previous post was at 03:11 PM ----------
What I recommend you is that at least you should erase your "retail demo apk" through adb so that the annoying demo video is not shown anymore and you can lock your phone normally. It's not a complete solution as you wouldn't be able to update your software or use fingerprint or face unlock features,but it should help while finding another solution.

Go to settings > System > About Phone > Tap on 'Build Number' several times.
This will enable Developer Settings.
In Developer Settings find 'Demo Mode' and disable it.
If this doesn't work I recommend going back to the store and demand a different unit because the one they sold you is unusable.
Sent from my EML-L29 using XDA Labs

Related

1 week old Mate 9 bricked?

So after performing a factory reset on the device it booted normally the 1st time and asked me for my PIN (??). It accepted my usual PIN (!) and took me to a clean slate (all Play Store apps gone) BUT the wallpaper was still the same, my username was still there and the other user profile was also still there. What was missing was a keyboard so there was nothing I could do with the device.
OK no problem, lets perform another factory reset. So once again I hold volume up & the power button, select reset to factory settings, reboot... and this time it boots to a black screen with only the android navigation bar at the bottom and the words emergency mode on the bottom left.
Any ideas on what to do now, short of sending it back to the store?
This is a brand new unit, running EMUI 5 from the box, bought from an authorised dealer. It was not rooted or tampered with in any way or form.
I've seen those symptoms and I had to perform an erecovery. If you have the Chinese version you can do that if you have the international version I think erecovery isn't working just yet.
Sent from my MHA-L29 using XDA-Developers mobile app
I have a MHA-L29 bought in Europe. I assume erecovery is the mode enabled by pushing volume up, volume down & power button at the same time? At that point I would need the full OS in a microSD inside the device, correct? Apologies, I'm not well versed in Android...
Huawei's website offers very little help . All one can find is a link to the 'quick start manual', a link to EMUI's source code (Mate 9 is absent), a mobile wifi inspection tool, and HiSuite. I'm assuming HiSuite is of no help in this case?
Have I run out of options here? Is my next step returning the device to the shop?
Governa said:
I have a MHA-L29 bought in Europe. I assume erecovery is the mode enabled by pushing volume up, volume down & power button at the same time? At that point I would need the full OS in a microSD inside the device, correct? Apologies, I'm not well versed in Android...
Huawei's website offers very little help . All one can find is a link to the 'quick start manual', a link to EMUI's source code (Mate 9 is absent), a mobile wifi inspection tool, and HiSuite. I'm assuming HiSuite is of no help in this case?
Have I run out of options here? Is my next step returning the device to the shop?
Click to expand...
Click to collapse
The easiest choice for you is returning the device to the shop, but it can definitely be fixed.
Huawei made some very stupid decisions with the Mate 9. You cannot flash firmware from SD card anymore. You have to use eRecovery (boot the phone plugged into a computer holding the volume up key) to recover. However, this eRecovery has not launched for the european model, so you can't restore.
I might be able to help you using my DNS server because I have reverse-engineered a lot of how the Mate 9 works, but I don't have a European model to test with. If it's easy for you to return it to the store, that's probably the best option.
I've contact Huawei support and they'll be picking up the device by courier. They expect to have it returned in 5 days max. I did test the eRecovery mode that you've described and indeed it fails to gather the needed files ("Getting package info failed").
I appreciate you input, what would your method involve? I've seen firmware (B122) floating around the web, how are people flashing it if the SD card method isn't working for this unit? Having said that I wouldn't personally attempt anything that could possibly void the warranty.
Governa said:
So after performing a factory reset on the device it booted normally the 1st time and asked me for my PIN (??). It accepted my usual PIN (!) and took me to a clean slate (all Play Store apps gone) BUT the wallpaper was still the same, my username was still there and the other user profile was also still there. What was missing was a keyboard so there was nothing I could do with the device.
OK no problem, lets perform another factory reset. So once again I hold volume up & the power button, select reset to factory settings, reboot... and this time it boots to a black screen with only the android navigation bar at the bottom and the words emergency mode on the bottom left.
Any ideas on what to do now, short of sending it back to the store?
This is a brand new unit, running EMUI 5 from the box, bought from an authorised dealer. It was not rooted or tampered with in any way or form.
Click to expand...
Click to collapse
when you make a factory reset in recovery on first boot you see lost the google service and also the keyboard (i know well i have done it two time in 4 days cause bootloop) how got the google service back? simply download from apkmirror a google keyboard (you need it for next step) and install it then go to settings/advanced settings and make a factory reset(need a pin in my case that why have installed a keyboard) when the device boot again you have the google service again
I see, thank you. I'll keep that in mind next time I reset the device. :good:
I then ask, if I do reset the device to factory settings and it craps out again, how would one know if eRecovery is able to recover European models? As of 3 days ago this option would throw a 'Getting package info failed' error. Short of trying it myself when I get my device back, has anything changed in the meanwhile? Is eRecovery working now?
hi mate, I only know what I've tried: eRecovery delete google service, eRecovery not erase password.factory reset from settings does reappear google services .... likely these problems are software bugs or are linked to nougat that has different partitions than to the past....sorry for now thats it
Inviato dal mio MHA-L29 utilizzando Tapatalk
So I just got my phone back from the service center and the first impressions were not good. Before returning the phone they called me to ask for my Google username and password (!!) to make sure the device was successfully recovered. I obviously refused and just told them to kindly return the device and I would test it myself.
Well the package arrived today and is missing the SIM ejector and the IMEI back sticker. Not only that but it now refuses to install the Amazon Shopping app and Google PhotoScan app because "this app is incompatible with your device". How can this be if I had these two apps installed before??
I also noticed that the device claims to be an "Orange MHA-L29"... have these guys just flashed it with a firmware meant for Mate 9s sold through Orange?
Governa said:
So I just got my phone back from the service center and the first impressions were not good. Before returning the phone they called me to ask for my Google username and password (!!) to make sure the device was successfully recovered. I obviously refused and just told them to kindly return the device and I would test it myself.
Well the package arrived today and is missing the SIM ejector and the IMEI back sticker. Not only that but it now refuses to install the Amazon Shopping app and Google PhotoScan app because "this app is incompatible with your device". How can this be if I had these two apps installed before??
I also noticed that the device claims to be an "Orange MHA-L29"... have these guys just flashed it with a firmware meant for Mate 9s sold through Orange?
Click to expand...
Click to collapse
mmmm too bad mate,your M9 is no brand? Orange is a carrier ....my opinion is ask why this change and ask for phone replacement
Yep, unbranded bought from an authorised dealer.
I am now going to escalate it and try to have this unit rejected and exchanged for a brand new one. I sure hope they don't propose replacing it with a refurbished unit, after all we're talking about a €700 device here and it has spent more time in the service center than in my hands. Very frustrating.
And this whole "no way to use eRecovery yet" and "no way to flash it from MicroSD" is just the last nail in the coffin... I mean what were they thinking? Even Apple devices allow me pick up the corresponding firmware and flash it at home from day 0. I hear the P9 Plus is less restrictive, maybe I should have gone for one of those instead?
I've got a real lemon here... let's see how they handle my case, I'll keep you all updated.

Huawei Mate 9 locked - need help

Hello to everyone!
I got my Huawei Mate 9 from Europe 2016-11-27, and set my fingerprint and the password, but when I rebooted the phone, it kept saying that the password is incorrect and fingerprint is unrecognized.
I tried to enter the password and possible combinations (in order I made some horrible typo in the beginning), but it all was useless.
I tried to wipe my data and start over again (hard reset), but wipe didn't work, the password is still there.
Moreover, I tried to use my gmail account that was linked to the Mate 9 and the android device manager (by google) to reset the password on the screen, but it didn't work either.
I also asked for help from the official service center of my country, but they refused to help me (even for money), because the device was made in Europe.
Considering the inability to perform an erecovery (because of the european version), there is no way but to send the device back in europe and wait another 1-1,5 months until it returns..
:crying:
Could anyone, please, give me any tips on how to reset the password and unlock the phone?
I would greatly appreciate your help
Same problem, did you solve it? Did you try to update firmware via three buttons?
Even if erecovery worked it would not erase the password unfortunately. I could get erecovery working for you but I don't think it will provide any solutions.
domestik said:
Same problem, did you solve it? Did you try to update firmware via three buttons?
Click to expand...
Click to collapse
Unfortunately, no.
I gave my mate back to the store where i bought it (in my country), and they asked their technical specialist to help me, so I'm just waiting and making a list of possible passwords that include 1 typo in any number.
What is important, that this specialist told me that it is not the first time when the device is permanently locked, he's already seen the chinese mate 9 with the same bug.
I tried to report this bug to the support center and wrote them 2 letters over these days, but they just do not respond..
duraaraa said:
Even if erecovery worked it would not erase the password unfortunately. I could get erecovery working for you but I don't think it will provide any solutions.
Click to expand...
Click to collapse
Thank you for your reply!
Could you, please, explain why mate 9 acts like some kind of terminator and does not allow me to reset the password in any way?
So there's basically no other solution but to completely format the internal memory at the factory?
103 views and still no solution...
Any ideas, please?
DemonRen said:
103 views and still no solution...
Any ideas, please?
Click to expand...
Click to collapse
Try search solution in Mate8's topics. May be it is same.
5[Strogino] said:
Try search solution in Mate8's topics. May be it is same.
Click to expand...
Click to collapse
Unfortunately, none of the methods that used to work with Mate 8 help with my Mate 9
The bootloader is locked and I wasn't able to enable the developer's mode or root the device before I rebooted it and it locked permanently.
And I don't have any Huawei id..
What is more, the store where I bought the device doesn't even know from which country it came, so they can not send it back for a factory formatting.
Soul crushing despair :crying:
Why haven't you contacted Huawei customer support (international) directly? They have more than one place to call. Did you try calling Europe's division? I know long distance can be annoying, but when you're out of options, it's best to deal with the manufacturer directly. Refusing you seems a bit odd.
Either way, all the best.
Even DC-unlocker (3-rd party tool special for Huawei) still not support out phone. Only way to wait when they will complete researching.
I'm glad it's not so easy to bypass Huawei's security. I'm about to receive my phone, and I would be unnerved if it was stolen and that easy for anyone to access my security login. I'm sure Huawei would help you provided you can show proof of purchase, it doesn't make sense?
Sent from my SM-N910F using XDA-Developers mobile app
opasha said:
Why haven't you contacted Huawei customer support (international) directly? They have more than one place to call. Did you try calling Europe's division? I know long distance can be annoying, but when you're out of options, it's best to deal with the manufacturer directly. Refusing you seems a bit odd.
Either way, all the best.
Click to expand...
Click to collapse
Thank you for your advice!
Yes, of course I tried to ask for help from the support senters of other countries.
United Kingdom Hotline: 08000 886 700, I had to find the international code to dial that number: +44 8000 886 700
A nice woman told me that if the device does not reset the password after the hard reset it means that there is something wrong with it and I need to get it checked. She also said that it was ment to be sold in the western Europe, so I should try and call to any countries from that region. She named Italy, Netherland,
France and Germany.
The only foreign language that I know is English, so I had to find a country where I could freel explain the problem to the support team..
Netherland Hotline: 0800 9188. The international code number didn't help: +31 0800 9188, the number is too short dial (mechanical voice tells me that the number is not in use).
Italy Hotline: 800 191 435 With code number: +39 800 191 435. I've also found this number on some forum where people said that they understand english, but I also wasn't able to dial it (the number is not in use).
France and Germany is out of my range because I don't know the language...
Still, I haven't got any solution
domestik said:
Even DC-unlocker (3-rd party tool special for Huawei) still not support out phone. Only way to wait when they will complete researching.
Click to expand...
Click to collapse
Thank you for your response!
I wrote to the DC-unlocker support team and they couldn't give me any information on how long it would take to complete their research and testing, which is sad..
Today I tried to initiate the system update by pressing volume up+down+power buttons while my phone was connected to the PC, aaaand now it's stuck on "Installing update 5%" for more than 1,5-2 hours. If I try to press the power button to switch it off it writes on the screen something like "Please release the power key to prevent the system from crash". Am I doomed? Is it realy stuck on the update and the phone will be bricked is I swith it off?
I suppose that my firmware is MHA-L29C432B109SP02
Tuffcheez said:
I'm glad it's not so easy to bypass Huawei's security. I'm about to receive my phone, and I would be unnerved if it was stolen and that easy for anyone to access my security login. I'm sure Huawei would help you provided you can show proof of purchase, it doesn't make sense?
Sent from my SM-N910F using XDA-Developers mobile app
Click to expand...
Click to collapse
Of course, I have a full package and a receipt of the store in my country, where I purchased my mate, but that does not help.
Officials in my country refuse to help me, because the device is Euro tested..
I contacted a legal expert and he explained to me that Huawei has no worldwide guarantee and support, that is why in my case I'm left out without help.
If you would really prefer your device to act like an alive brick in any situation just do not unlock your bootloader, do not enable developer's mode and never turn on usb debugging.
Hi DemonRen,
After rebooting fingertip recognition is not accepted, you have to fill up the required Password, but if you have Sim with Pin code before asking for Password it asks for this Pin code.
lionpeloche said:
Hi DemonRen,
After rebooting fingertip recognition is not accepted, you have to fill up the required Password, but if you have Sim with Pin code before asking for Password it asks for this Pin code.
Click to expand...
Click to collapse
Thank you for the advice!
I've read on the official site after the device locked itself that the fingerprint recognition is not allowed after the reboot, which seems extremely strange to me..
You see, the phone has no Sim card inside (I took it off when I was trying to do the factory reset) and my sim has no activated PIN anyway, so I don't think that's the problem..
It keeps asking for a password
DemonRen said:
Thank you for the advice!
I've read on the official site after the device locked itself that the fingerprint recognition is not allowed after the reboot, which seems extremely strange to me..
You see, the phone has no Sim card inside (I took it off when I was trying to do the factory reset) and my sim has no activated PIN anyway, so I don't think that's the problem..
It keeps asking for a password
Click to expand...
Click to collapse
You're welcome, did you try 1234 or 123456 ?
lionpeloche said:
You're welcome, did you try 1234 or 123456 ?
Click to expand...
Click to collapse
Not a bad idea. He should also try 0000.
lionpeloche said:
You're welcome, did you try 1234 or 123456 ?
Click to expand...
Click to collapse
opasha said:
Not a bad idea. He should also try 0000.
Click to expand...
Click to collapse
Thank you for the ideas
Actually, I tried around 70 variations of my password, including possible typos (the pass is long).
And of course 0000, 000000, 1234 and 123456, even though I was pretty sure that it wouldn't help..
I just wish that Huawei had some service where I could provide all the codes (imed,meid,s/n), pictures of the phone, package and receipt (cheque) and that it would be good enough for them to restore my password instead of refusing to help me
I could even send them my fingerprint, if they need to
Why don't you try to call France or Germany ? Most of the guys now are speaking English at least they can connect you to the one who does.

Where to find the S/N?

Hello,
I just received a Note 5 and was setting it up (rooted) when I accidently bumped and turned off the dev options. I turned it back on but forgot to turn on the selection in there for OEM Unlock. Rebooted and got that stupid customer binary blocked message. So I'm using Kies to go back and start all over again but it's asking for a S/N and I can't find it on the box or on the unit. Can anyone help me with this?
Thank you
You can flash stock rom instead of using Kies if you can't find the code
Usually a little sticker on the back of the phone with that number
Mine does not have a sticker, only the IMEI on the bottom line on the back, printed in black ink on the dark blue surface under the glass.
I'm not sure where to get the serial number.
Google an for note 5
You can Google Image for a note 5 t mobile and just use any time mobile sn I've done it plenty of times
---------- Post added at 12:22 AM ---------- Previous post was at 12:13 AM ----------
RF8GA26EGPA. It is for a t mobile note 5
I did grab someone's S/N on the net and then wrote it down and when I loaded my Note5 I wrote down my S/N as well.
Thanks everyone!

Found Mate 9 can I unlock it?

Hello guys, I'll begin by saying that I'm not english so if i make mistakes u have to forgive me. Yesterday, a friend of mine came to me by saying that he "found" a phone, which actually is a Huawei Mate 9 MHA-L29.
Now, he told me that he tried to return the phone to the police but it didn't have any SIM card in it and they just told him to keep it because they couldn't do anything. I was actually searching a good and cheap phone to buy and he told me that he can sell it to me at a nice price if i manage to unlock it, now the problems start. So when i turn it on, it hasn't any wallpaper and it wants the unlock Pin, which obviously is unknown.
Something like this happened to me a month ago with a P8 Lite which i factory resetted even if it had a pin and everything went fine.
With this phone tho, if i go to eRecovery (both buttons and start button) and press "Download lastest version and recovery" it makes me choose a wifi and then gives me "getting package info failed".
If i try Vol Down and start button, it takes me to the EMUI update i guess (I'm kinda new to these things so please understand my ignorance.) and tells me "System install failed".
Also tried to link it via USB to my PC and tried Recovery from HiSuite but i guess since the device is in "only charge" and i don't have the pin to change that, it doesn't work either.
Do you guys think is it possible to unlock it someway? I would really appreciate your help.
It could be the original owner who had lost the phone had contacted Huawei and had them disable phone, (making it useless).
debugging seems to be not enabled
password isn’t known
pin isn’t known
factory reset without removing pin/password before will not be successful!!!
as i know, this phone is fully useless for you.
BTW: bad for you, but good for all the people which have lost her phone.
If you would have the original box and bill, the HUAWEI service center can help.
Without this, you will get no help!
and at last...
How often do you think, people have "lost" her phone without sim card installed into it? Not often i think!!!
If it has the original software and recovery on it, chances are that FRP lock is still enabled so unfortunately, it's worth nothing. Maybe you guys can post it on some public ad sites and the owner will be found and give a reward.

P20 Pro - demo variant - how to make it usable

Hello,
After being the "proud" owner of a P20 Pro which is a demo unit, I have looked for ways to make it usable and as close as the retail variant.
Things to do:
On Phone:
- go to Settings -> Device administrators and disable the administrator for the Demo apps
On Computer:
- install ADB and connect your phone to computer
Run the following commands:
- pm uninstall -k --user 0 com.huawei.retaildemo
- pm uninstall -k --user 0 com.huawei.retail.assistant
This will stop the annoying video that is playing everytime you lock your device.
The Explore P20 PRO app can be disabled from the settings.
However, there are some other issues with the phone:
1. it charges till 75% then stops
The key to charge it to 100% is to let it charge to 75%, then, without unplugging the cable, restart the phone.
2. there is no lock screen and no posibility to add a fingerprint or a passcode
I installed a lockscreen from the PlayStore that got this issue fixed; still no fingerprint though ...
3. You will have a demo notification in the status bar
To remove this, install Quick Shortcut Maker from Playstore
Search for DEMO -> You will find SystemUI - Demo mode
Click on AppInfo then Notifications
Disable all of them
Go back and click on Force Stop ( you have to do this last part everytime you restart the phone if you want it to be hidden )
4. You get tons of appointments in the Calendar and numbers in the Contacts.
The solution is to delete all of them.
5. Apps do not have permision to access the mobile data, you receive a confirmation everytime and you have to click accept
The solution is to go to Settings -> Wireless and networks -> Mobile data -> Networked apps, and select all the checkboxes for Installed apps and System apps tabs. ( this has to be done each time after you restart your phone )
This is everything I could think of now.
If some of you have other suggestions I can try, please feel free to let me know.
Right now, the phone is usable and works pretty well.
P.s: After restoring it to factory defaults, everything will be lost
How do you end up with a demo device?
Bought it very cheap, of course ... It was not a scam or anything, just a P20 PRO at a very good price.
Phone was brand new, never powered on.
Thanks a lot. It solved my issue.
Al3xxxinho said:
Bought it very cheap, of course ... It was not a scam or anything, just a P20 PRO at a very good price.
Phone was brand new, never powered on.
Click to expand...
Click to collapse
Be robbed from a shop mate. If it's got demo content rolling.
https://forum.xda-developers.com/huawei-p20-pro/development/bootloader-unlock-service-t3852447
Unlock bootloader, root, remove demo or flash with huru
Already did that before it was released to the public.
Cost: 50 usd.
Al3xxxinho said:
Already did that before it was released to the public.
Cost: 50 usd.
Click to expand...
Click to collapse
Then you need for flash a normal OS.
No need to retain the demo software, if it is OS based.
Or you could maybe delete the demo content using root explorer.
I already flashed the regular OS.
How you did that?
Al3xxxinho said:
I already flashed the regular OS.
Click to expand...
Click to collapse
How did you do that? Can you please write the steps.
Here you go: https://forum.xda-developers.com/hu...de-how-to-root-debrand-remove-retail-t3788326
Al3xxxinho said:
Here you go: https://forum.xda-developers.com/hu...de-how-to-root-debrand-remove-retail-t3788326
Click to expand...
Click to collapse
Thank you very much dear Just want to know, my phone is UK based, so which firmware should I use to install on my Demo P20 Pro? Any link?
Hi, how i can buy a demo model? It is new for me
Hey, did you find any more tweaks or issues with the Demo version?
I followed all your steps and other than not being able to use Fingerprint it runs okay.
Still hoping that Bootloader unlock codes will make a return
I have p30 pro with similar problems
As for the lockscreen, if u install google's Find my phone it will enable your lockscreen code. Then u can enable the fingerpring access.
Only problem i have now is i cant enable mobile data and thats a big problem
Anyone know that issue and how to fix it?: (
Maybe a silly one - but in 'Developer Options' there is a section 'Demo Mode' - did you try turning that off?
Kosomoars said:
I have p30 pro with similar problems
As for the lockscreen, if u install google's Find my phone it will enable your lockscreen code. Then u can enable the fingerpring access.
Only problem i have now is i cant enable mobile data and thats a big problem
Anyone know that issue and how to fix it?: (
Click to expand...
Click to collapse
Could be the radio is not complete in which case it'll never work.
You could try flashing a firmware via fastboot, I did this a while back, I had a guide I wrote in my sig, not sure if it's still there?
Check a few guides.
My guess is the physical components are intact it's just the firmware you're on
Hello, I once found a way to block and fingerprint
1.Apk Find my device
2.protect the device
Active lock option
Just buy a new phone instead of a robbed one..
Surprised you're allowed to bake a thread on XDA for this

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