Fix Realme Bootloader Unlock Failed to Submit Application

In this guide, we will show you the steps to fix the Realme Bootloader Unlock Failed to Submit Application error. Every OEM ships their devices with a locked bootloader so that the user only sticks with the ecosystem that they provide. But at the same time, they leave a small opening for the tech enthusiasts to bypass this limitation. In doing so, you stand at the epitome of a plethora of customizations.

Right from flashing a custom ROM to installing a custom recovery like TWRP, there’s a lot to try out. Likewise, you could also gain access to the system partition by rooting the device via Magisk. Once you do so, you could then welcome a plentitude of mods such as Xposed Framework, Substratum Themes, Magisk Modules. But how could this unlocking process be carried out?

While other OEMs usually require just a single line of Fastboot Command, with Reame things are a little bit different. They require you to download and install the device-specific In-Depth Test APK onto your device. Then launch the tool, accept the Terms and Conditions and submit your application. Your application will then be verified within 15-20 minutes and you shall be notified of the same.

However, some users have complained that they aren’t able to do proceed with the verification. Rather, they are being greeted with the Failed to Submit Application error which results in the inability to unlock their Realme device’s bootloader. If you are also getting bugged with this issue, then this guide is here to help you out. Follow along.

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Fix Realme Bootloader Unlock Failed to Submit Application Error

We have shared two different methods. You should start off with the first method and if it doesn’t work out, then only proceed with the second method. Do keep in mind that unlocking the bootloader will wipe off all the data and might make the device’s warranty null and void. So take a backup beforehand and proceed with caution. Droidwin and its members wouldn’t be held responsible in case of a thermonuclear war, your alarm doesn’t wake you up, or if anything happens to your device and data by performing the below steps.

Method 1: Fix Failed to Submit Application Error Via Network Tweak

In this method, we will be changing the location of your PC’s network Adapter via Device Manager to which your device is connected. But how will this tweak fix the issue? Well, the Realme Bootloader Unlock Failed to Submit Application error happens due to a carrier customized phone.

So we will trick the device into believing no such change has taken place by spoofing the location to Multilingual Version. Any downsides of this process? I could only document the issue saved WiFi password is deleted. Apart from that, “I” haven’t faced any issues, but you should still exercise caution and proceed at your own risk.

STEP 1: Enable Developer Options and OEM Unlocking

To begin with, you will have to enable USB Debugging and OEM Unlocking on your device. The former will make your device recognizable by the PC in ADB mode. This will then allow you to boot your device to Fastboot Mode. On the other hand, OEM Unlocking is required to carry out the bootloader unlocking process.

So head over to Settings >  About Phone > Baseband & Kernel > Tap the Build Number 7 times > Then go back to Settings > Additional Settings > Developer Options > Enable OEM Unlocking.

STEP 2: Download Oppo/Realme Unlock Bypass Tool

Next up, download the Unlock Bypass Tool from here: Oppo_Realme_Unlock_Tool.rar. [Credits: XDA Recognized Developer Zacharee1]. Once downloaded, extract to any convenient location on your PC. This tool will come in handy later on to fix the Realme Bootloader Unlock Failed to Submit Application error.

STEP 3: Tweak the Network Address

1. Use the Windows+X shortcut keys and select Device Manager from the menu that appears.
   
2. Scroll to the Network Adapter section and click on it to further expand it.
3. Now double click on your internet driver family to launch its Properties. In my case, this was Realtek PCle GbE Family Controller.
4. Now go to its Advanced section and select Network Address from the Property dialog box.
   
5. Right next to it will be the Value box, select it. Type in 704D7B61ABCD in the Value box and click OK to save the changes.
6. Now head over to the folder where you have extracted the Oppo_Realme_Unlock_Tool folder and double click on the Sec5.exe file.
7. Connect your device to the PC via USB cable. Make sure that it is in MTP Connection mode, if that is not the case, then do so right away.
8. Now click on the Unlock button and you shall see a string of alphanumeric characters. After that, the OK message shall be displayed on the screen as well.
9. Once you see this OK, click on Stop Unlocking to close this command window.
10. Now pick up your device, open the dialer, and type in the below code:

    *#3954391#

11. After this, type in the following code:

    *#391#

12. You shall now see a list of regions, select Multilingual Version Ex (it would be on the top of the list itself).
13. As soon as you do so, your device will automatically reboot once.

STEP 4: Unlock Bootloader via In-Depth Test APK

Once that is done, you may now download the In-Depth Test APK for your device and proceed with the on-screen instructions to carry out the unlocking process. All the instructions, as well as the APK file, are given in this guide, please refer to it: A Universal Guide to Unlock Bootloader on any Realme Device. You will no longer get any Failed to Submit Application error message and the bootloader on your Realme device will be successfully unlocked.

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METHOD 2: Fix Failed to Submit Application Error Via Microsoft Loopback Adapter

Oppo might have got hold of our first workaround and seems to have patched it (though not yet confirmed). As a result, some Realme and many Oppo device owners aren’t able to make use of the first tweak. Fret not, there is another pretty impressive tweak that is known to bypass this. Here’s what needs to be done [Credits: XDA Member Sonic Steven].

First and foremost, make sure that you aren’t using any custom MAC Address, if that is the case then revert to the default one. Moreover, if you have already tried the first method and launched the Sec5.exe file, then close it. Make sure that it isn’t running in the background either (via the Task Manager). With that in mind, let’s start off with the second method to fix the Realme Bootloader Unlock Failed to Submit Application error

STEP 1: Enable OEM Unlock

Start off by enabling USB Debugging and OEM Unlocking on your device. Go to Settings >  About Phone > Baseband & Kernel > Tap the Build Number 7 times > Then go back to Settings > Additional Settings > Developer Options > Enable OEM Unlocking.

STEP 2: Download Oppo Unlock Tool

Next up, download the Oppo_Realme_Unlock_Tool.rar and extract it to any convenient location on your PC.

STEP 3: Add Microsoft KM-TEST Loopback Adapter

1. Launch Device Manager from the Start menu. Go to the Action tab situated at the top and select Add Legacy Hardware.
   
2. After this, click on Next in the Welcome Screen.
3. Select “Install the hardware that I manually select from a list (Advanced)” and click Next.
   
4. Select Network Adapter from the list and click Next.
   
5. Now select Microsoft under the Manufacturer section.
   
6. Then Microsoft KM-TEST Loopback Adapter under the Model section (the name might vary slightly, just make sure that it has the Loopback Adapter keyword).
7. Finally, click Next > Next to start the installation process.
   

STEP 4: Change Region to Multilingual Version Ex

1. Go to the folder where you have extracted the Oppo_Realme_Unlock_Tool folder and double click on the Sec5.exe file. This file will help to fix the Realme Bootloader Unlock Failed to Submit Application error.
   
   
2. Then connect your device to the PC via USB cable. Make sure that it is in MTP Connection mode.
3. Now click on the Unlock button. You shall see a string of alphanumeric characters and the OK message will also start blinking on your screen.
4. Once you see the OK message, click on Stop Unlocking and close this command window.
5. Now pick up your device, go to the dialer, and type in the below code:

   *#3954391#

6. Next up, type in the following code:

   *#391#

7. You shall now see a list of regions, select Multilingual Version Ex (it would be on the top of the list itself).
8. As soon as you do so, your device will automatically reboot once.

STEP 5: Unlock Realme Bootloader via In-Depth APK

Finally, you may now download the In-Depth Test APK file corresponding to your device and carry out the unlocking process. All the related instructions, as well as the APK file, are given in the linked guide, please refer to it: A Universal Guide to Unlock Bootloader on any Realme Device.

That’s it. These were the steps to fix the Realme Bootloader Unlock Failed to Submit Application error. If you have any queries concerning the aforementioned steps, do let us know in the comments. We will get back to you with a solution at the earliest.

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