Huawei P20 Lite demo unit - how to make normal phone? - Huawei P20 Lite Questions & Answers

Hello,
My old Huawei P20 Lite were brick...Then I bought from second hand same Huawei P20 Lite, but it is demo unit. Is it possible reset phone, or flash this phone, uninstall demo app?
Thank you for helping me.
c:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase data
erasing 'data'...
FAILED (remote: Command not allowed)
finished. total time: 0.012s
c:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase cache
erasing 'cache'...
FAILED (remote: Command not allowed)
finished. total time: 0.013s

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erik.aragorn said:
Hello,
My old Huawei P20 Lite were brick...Then I bought from second hand same Huawei P20 Lite, but it is demo unit. Is it possible reset phone, or flash this phone, uninstall demo app?
Thank you for helping me.
c:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase data
erasing 'data'...
FAILED (remote: Command not allowed)
finished. total time: 0.012s
c:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase cache
erasing 'cache'...
FAILED (remote: Command not allowed)
finished. total time: 0.013s
Click to expand...
Click to collapse
https://forum.xda-developers.com/t/huawei-p20-lite-exhibition-mode-flash-to-normal-android.4376807/
https://forum.xda-developers.com/t/p20-lite-uninstall-demo-mode.4461987/
No comment...

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-Alf- said:
https://forum.xda-developers.com/t/huawei-p20-lite-exhibition-mode-flash-to-normal-android.4376807/
https://forum.xda-developers.com/t/p20-lite-uninstall-demo-mode.4461987/
No comment...
Click to expand...
Click to collapse
Sorry, my fault, pls delete

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erik.aragorn said:
bootloader) :ANE-LX1 9.1.0.397(C432E7R1P7)
OKAY [ 0.015s]
finished. total time: 0.016s
c:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem get-product-model
...
(bootloader) ANE-LX1
OKAY [ 0.014s]
finished. total time: 0.015s
c:\Program Files (x86)\Minimal ADB and Fastboot>fastboot getvar vendorcountry
vendorcountry: hw/eu
finished. total time: 0.013s
c:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem oeminforead-CUSTOM_VERSION
...
(bootloader) :ANE-LX1-CUST 9.1.0.7(C432)
OKAY [ 0.015s]
finished. total time: 0.016s
c:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem oeminforead-SYSTEM_VERSION
...
(bootloader) :ANE-LX1 9.1.0.132(C432E5R1P7)
Click to expand...
Click to collapse
Single SIM/dual SIM?

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-Alf- said:
Single SIM/dual SIM?
Click to expand...
Click to collapse
dual sim

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Strange, according to the data from fastboot you have the normal global version, not the Demo. Are you sure?

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Yes I´m sure. Phone have installed app Retail Demo.

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erik.aragorn said:
Yes I´m sure. Phone have installed app Retail Demo.
Click to expand...
Click to collapse
A) If your phone is fully functional, it should be enough to disable the Demo application:
Go to Settings -> Device administrators and disable administrator for demo apps (Retail mode and HwRetailAssistant).
- dial *#*#2846579#*#*, then "Background Setting", "USB Port Setting" and select "Manufacture Mode".
On the computer:
- Install ADB and connect your phone to your computer.
- Run the following commands:
adb devices
adb shell
pm uninstall -k --user 0 com.huawei.retaildemo
pm uninstall -k --user 0 com.huawei.retail.assistant
pm clear com.android.providers.contacts
Reboot.
Note: The package names of the demo apps may vary (for example, com.huawei.experience.mar.can). You can check the exact name using the "Package Inspector" application.
B) If the phone is not fully functional, try installing a service ROM
Downlad
Unpack downloaded package, find dload folder in "Software" , copy it to the SD card ( copy the folder as is, without unpacking it ! ). Turn off the phone and use 3-buttons to flas FW.
Warning: this process will erase all your personal data, so make a backup.

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-Alf- said:
A) If your phone is fully functional, it should be enough to disable the Demo application:
Go to Settings -> Device administrators and disable administrator for demo apps (Retail mode and HwRetailAssistant).
- dial *#*#2846579#*#*, then "Background Setting", "USB Port Setting" and select "Manufacture Mode".
On the computer:
- Install ADB and connect your phone to your computer.
- Run the following commands:
adb devices
adb shell
pm uninstall -k --user 0 com.huawei.retaildemo
pm uninstall -k --user 0 com.huawei.retail.assistant
pm clear com.android.providers.contacts
Reboot.
Note: The package names of the demo apps may vary (for example, com.huawei.experience.mar.can). You can check the exact name using the "Package Inspector" application.
B) If the phone is not fully functional, try installing a service ROM
Downlad
Unpack downloaded package, find dload folder in "Software" , copy it to the SD card ( copy the folder as is, without unpacking it ! ). Turn off the phone and use 3-buttons to flas FW.
Warning: this process will erase all your personal data, so make a backup.
Click to expand...
Click to collapse
Device administrators and disable administrator for demo apps (Retail mode and HwRetailAssistant) it is not possible deactivate in this setting
c:\Program Files (x86)\Minimal ADB and Fastboot>adb devices
List of devices attached
9WV7N18A26005126 device
c:\Program Files (x86)\Minimal ADB and Fastboot>adb shell
HWANE:/ $ pm uninstall -k --user 0 com.huawei.retaildemo
Failure [DELETE_FAILED_DEVICE_POLICY_MANAGER]
1|HWANE:/ $ pm uninstall -k --user 0 com.huawei.retail.assistant
Failure [not installed for 0]
1|HWANE:/ $ pm clear com.android.providers.contacts
Success
HWANE:/ $