INFINIX X6815B-H772AB-R-OP-220111V224 Firmware Factory Signed Exclusive 

Factory Signed INFINIX X6815B-H772AB-R-OP-220111V224 Firmware

Factory Signed Firmware
This is an MTK chipset device so act according.

How to Flash Device Guide 
1.Download and Extract
2. SWD after sale tool is recommended [SP FLASH TOOL is not recommended]
3. Locate Scatter File
4. Select A brief image file verification will proceed to authenticate [SWD after sale tool]
5. After Verification Successfully completed
6. Power off Device and Connect to PC [ensure MTK drivers are already installed]
7. Flashing will begin momentarily.
FLASH DONE
ENJOY.

Please Note:
New Edition of MTK chipset using Manufacturers [itel Tecno infinix] No longer Support Downgrade; But the Good New is this
If you downgrade your device it would not lead to dead boot or brick Just A blank Screen Display and No
boot up so to prevent this Always use the latest Available Firmware.

Finally:
This post will be updated Regularly with the latest firmware baseband version
IAASTEAM Infinix Factory Sgned Firmware