Here you can download Spreadtrum SC9832 based PAC Stock Firmware for the Micromax Q402 Ultra Android device. The downloadable file High Compressed in an archive, You will get the Flash File after extraction. Included contains Flash Tool, USB Driver, and how-to Flash manual instructions.
[*] Chipset: Spreadtrum SC9832.
[*] Driver: SPD (SCI / NPI) Driver.
[*] Flash Tool: SPD Upgrade Tool.
Firmware for Micromax Q402 Ultra
Build Number: MMX_Q402_Ultra_SW_V03_HW_V2.1_20171113
Android Version: v6.0 (Marshmallow)
Download Size: 931 MB
Micromax Q402 Ultra Flash Tool & USB Driver
Flash Tool for Micromax Q402 Ultra
Micromax Q402 Ultra USB Driver
[*] Backup: During the flashing process SPD Flash Tool will erase user data from the phone. So you need to backup for restoring those files on your device.
[*] Device Information: The Micromax Q402 Ultra phone powered by Spreadtrum SC9832 CPU. So you need to use SPD Flash Tools to and SPD USB Driver flash Firmware on this device.
[*] Flashing Information: You can try different types of SPD Flash Tools to flash this Pac file if you see any of them show interrupted in flashing. The following Tools are Upgrade Download, Research Download, and Factory Download.