[OPPO A72 Guides, News, & Discussion] MuntedJester:
Hi,

I managed to get the Android 11 update with a bit of stuffing around and thought I would share for everyone else, I did this on a unlocked Australian variant bought from Optus, you're mileage may vary.

This will activate dual sim mode on the phone with a single IMEI, I left my location set to Europe so it is upto you if you follow the last step to remove Dual Sim Mode.

You will need to backup anything you don't wish to lose as a full factory reset is required.

Requirements:

OPPO A72 - My bootloader is locked, My simlock is off

CPH2067_11_A.54 Latest European ROM for the device - Download Here: https://support.oppo.com/nl/software-update/software-download/?m=A72

Oppo Free Unlock Tool - https://xdaforums.com/t/guide-switc...de-to-coloros-11-and-enable-dual-sim.4191787/

A Google account to download ExpressVPN (This is the second last step so leave for now)

A Windows PC with a internet connection

WIFI or Mobile data on phone.

Latest ADB Drivers - https://adb.clockworkmod.com/

Instructions:

1) Backup all settings and user data.

2) Remove all accounts and screen lock security settings on phone.

3) Format all data, factory reset phone.

4) Download Oppo Free Unlock Tool from the link provided to PC.

5) Follow these instructions to install Microsoft Loopback Adaptor -

6) Open Device Manager and expand the Network Adapters category.

7) Find your Loopback Adaptor and double click it to open its properties.

8) Go to the Advanced tab and find the Network Address option in the Property pane.

9) Under the Value pane, select the radio button next to the text box and paste in the following: 704D7B61ABCD.

10) Install ADB Drivers.

11) Extract OPPO Free Unlock Tool, You're antivirus may give a false positive so you will have to manually add an exception for the tool.

12) Go to where you extracted the unlock tools. Open Sec5.exe.

13) Plug in phone via USB and select "Transfer Files".

14) Enable developer options on phone and activate USB Debugging.

15) Press Allow when prompted to give PC ADB access.

16) Open Sec5 window.

17) After about a second, a string of numbers and letters should show up in the left pane, Press Start Unlocking and few seconds later, "OK" should start flashing in the right pane.

18) Press stop unlocking and disconnect phone.

19) Open the phone app on your device and dial *#3954391#. Then dial *#391#. A screen should come up with a whole bunch of regions listed. (Take note of the one highlighted in green as you will need this in the final step).

20) Choose this one: "Europe EUEX" and click Ok you're phone will restart.

21) Download the rom from provided link to the phone and install through recovery mode.

22) Add your google account and download ExpressVPN from Play Store.

23) Open ExpressVPN and start 7 day trial then set to Netherlands server.

24) Goto Settings then Software Update and you will see Android 11 available to download.

25) Click Download then when complete Click Install

26) Remove Google Account from phone and factory data reset again.

27) Use instructions 12-20 to set your phones location back to your original setting.

That's All Folks :)