[Android General] Lord Steva:
In this thread I'll discuss how to unbrick hard bricked LGX150. After accidentally deleting key system app on my phone, I was left with dead device. Let this thread be a guide how to hopefully revive it; from installing fresh firmware to writing its IMEI to be able to connect to your mobile provider.
​

***Note that I'm am not responsible for any possible further damage you do to your phone! This method has worked on my phone. That's the only device I'm certain it works on. Furthermore, this firmware is only for LG Bello 2 (LGX150), so in no way try to use it on any device other than one mentioned!***​

Tools you are going to need are linked at the bottom.

Before we even start, you'll need to disable driver signature enforcement. Note that I'm using Windows 10. To do that, follow this simple guide. I'll be waiting...

Disabled? Great. Now, we are going to install MediaTek drivers. Open Device Manager and select to add legacy hardware in the action drop menu. We want to install it manually, so choose that option.

After clicking on next and "have disc", find the extracted driver folder location you've previously downloaded and choose:

MTK_Driver_ext>SP_Drivers_v1.6>cdc-acm.inf.

Select MediaTek DA USB VCOM. The prompt box will open where you'll click on "install anyway". Now, plug your phone in and right click on it in Device Manager. Choose "Update driver" and in the following list install driver MediaTek DA USB VCOM under MediaTek. That's it. You we have successfully installed the driver. Your phone should be listed in ports as "MediaTek DA USB VCOM (Port X)".

Awesome. Now for the more interesting part.

Download "SP tool.7z" and "LGX150-00-PIN-EUR-XXX-JUL-15-2015+0.user_3.zip", and extract them.

Run SP tool as an administrator, and in the download tab choose "MT6582_Android_scatter.txt" as an Scatter-loading file. If everything is okay, loaded files should now fill previously empty box. Okay, great! The moment of truth has come.

Press download button and reinsert your phone. Don't touch any button, either on the phone or computer. The bar at bottom should now change in color and flashing procedure should take place. Leave the room and return momentarily. Pray if religious.

Everything went smooth? The big green "okay" window has shown? If no, try different version of SP tools. If yes, remove the cable from phone, and battery as well. Wait for 15 seconds and reinsert it. Try to power the phone on.

Congratulations. For the next part, we'll rewrite its IMEI since it has been deleted, but more on that in a few days. You may want to check the post on how to root it here.

Credits go to the member on panduoduo.net named Ari*****e123, but I'm not sure whether the stars are because it's hidden or it is for real. Anyways, this is the link of the member. I can't thank her/him enough because this is the only firmware that actually worked, and we know how scarce options are for LGX150. If someone could show me how to donate to her/him, if possible, I'll gladly do so. Thank you, Ari*****e123.

Also, MediaTek developers for developing many, many great tools absolutely free of charge.

downloads:

MediaTek drivers

SP Tool

Firmware