The implementation of Anti-roll Back Protection mechanism is rather spooky. It prevents users to downgrade the MIUI version. Once users did, their phone will be bricked forever! Unless they bring it to to nearest Mi Service point. One of ARB-protected devices is Redmi Note 5 Pro/Ai/China/Global (codename Whyred).
Some users have pointed out a workaround to fix the hard-bricked Redmi Note 5 by flashing the MIUI ROM through EDL mode which can be achieved through Test-point method.
However, this workaround has been analyzed by Xiaomi. As a result, Xiaomi prevents EDL-flashing unless the user has proper permission which in this case is an authorized Mi Account. Hence, this workaround works no longer for most of the time.
The serious level of protection shown by Xiaomi is, for me, a little bit odd. The ARB Protection takes place in the system to prevent from a downgrade process. This, however, is not a prevention. It is rather be a trap. A prevention mechanism should forbid users or prohibit users so that the downgrading process would never happen. Instead, they allow it happening and then banning users from using their own devices.
Well, that’s rather my own opinion which do not reflect opinions of other Authors of MIUI blog.
Now, what if you have fallen to this trap? Finding your Redmi Note 5 broken with no way to revive it. Hmm, I think you still have two options.
First, to give up and to bring the device to the official Mi Service Center.
Second, to try flashing through the EDL mode.
Third, or you can try this workaround below.
Disclaimer: We hold no responsibility of any further damage that might arise. Please proceed carefully and responsibly.
How to Unbrick Redmi Note 5 Caused by ARB Protection
Step 1. Download and install ADB-Fastboot Drivers on your computer.
Step 2. Download Mi Flash tool and install it on your computer as well.
Step 3. Download modded MIUI ROM with unbrick tweak for Redmi Note 5 on your computer. The modified ROM is available in two files. Download both of them (anti_test_note5.zip and anti_test_note5.z01). Make sure you put both files in the same folder/location.
Step 4. Double click the anti_test_note5.zip to extract it. You will get a folder called “anti_test_note5“.
p.s: Make sure you have WinRAR, WinZip, or 7Zip installed already.
Step 5. On your computer, open Device Manager.
Step 6. Now connect your bricked Redmi Note 5 phone to the computer using its USB cable. Windows Device Manager should detect the phone as Qualcomm HS-USB QDLoader 9008 (COM4).
Computer cannot detect the phone? Troubleshoot by trying one of these:
- Try using other USB cable. Make sure it is a USB Data cable and not a Charging-only cable.
- Try using other USB ports in your computer.
- Install the Qualcomm QDLoader USB Driver.
Step 7. Now open up the Mi Flash tool by clicking its icon on Desktop.
You might find some Widows alert. Click Yes then Allow.
Step 8. Next, in Windows Explorer, open the folder of where you have extracted the Anti_test_note5. Copy its location path. Right click then Copy.
Step 9. Now paste that location path to the Mi Flash tool address bar. Right-click then Paste.
Yours may be different.
Step 10. Click the Refresh button, then choose the “Clean all” option. Finally, hit that Flash button to start flashing.
Step 11. The tool will start doing its job. Sit tight and wait for it. It may take times but just hold on.
Do not leave the computer. Pay attention to how the project is going.
Step 12. Once done, you will see the Success message being displayed in the Result column.
Step 13. The Redmi Note 5 phone will automatically reboot after flashing. You have to wait since it also takes time compared to a normal phone.
Step 14. Once it boots into system, simply setup your Google Account as usual.
Please note that the tweaked MIUI ROM to fix Anti-roll Back bricked device is built upon MIUI 9. The main purpose of using this ROM is to bring back the device to life. Once revived, you can then upgrade/update the phone to the latest available MIUI 10 ROM for Redmi Note 5.
Voila! Congratulation, you bring back the broken Redmi Note 5 to life. You have fixed a dead Redmi Note 5 from ARB hard-bricked state to a normal state without EDL mode, Test-point method, nor Mi Authorization.
This method bypasses Mi Authorization needed to fix bricked Redmi Note 5.
This article is based on Rashidmalyk’s work and it has been proven to work by our team. You can watch his video below:
Should you have any questions, please do not hesitate to leave comments below.