Blu Life One XL X020Q Android 4.4.2 Firmware Flash File

Prerequisites for Installing Rom on Blu Life One XL X020Q

Download and install QPST 2.7.422 with QFIL and Qualcomm USB Drivers. Turn off the phone Run QFIL.
In any other case u have to install drivers manually.
Qualcomm HS-USB QDLoader 9008 (COMXX)
There should be device called in device management:
Turn off the phone. Hold Vol+ button and plug-in USB Cable. Phone will vibrate one time, screen wil be black. This is DownloadMode.
Download and install QPST 2.7.422 with QFIL and Qualcomm USB Drivers.
Click Browse… in Programmer Path and choose prog_emmc_firehose_8916.mbn
Load XML in Download Section:
First select RawProgram File: rawprogram0.xml
then Select Patch File: patch0.xml
Check all inputs is correct and click Download under Load XML button and wait about 5 to 10 minutes:
After flashing process starts, it might take up to 5-10 minutes. So, keep patience and wait
See detailed Instruction Qualcomm flashing QPST tool with images