I have made this modded this TWRP to make it usuable on Micromax Q450 (and Wiko Highway Pure 4g … and Qmobile Noir Z9 .,, and Blu Vivo Air … and in a Hyundai Mobile smartphone)
the Install zip works
the BACKUP works
the wike Dalvik cache Works
the sideload works
the RESTORE works (used to restore system partition)
the reboot to Bootloader (fastboot) works
I HOPE that NOW these smartphones (made by Tinno Mobile) can finally have some custom ROM 
to install TWRP:
Method 1 (professional mode without Rooting)
download QFIL… (qualcomm tools) and Download Q450 Stock ROM (Android 5.1.1 dump)
create an XML upgrade file (for example: rawprogram_unsparse_recovery_by_davy.xml )
<?xml version="1.0" ?>
<data>
<!–NOTE: This XML flash ONLY the recovery on Micromax Q450 Android 5.1.1 (by Davy)–>
<!–NOTE: This is an ** Autogenerated file **–>
<!–NOTE: Sector size is 512bytes–>
<program SECTOR_SIZE_IN_BYTES="512" file_sector_offset="0" filename="Q450_TWRP_beta4_Davy.img" label="recovery" num_partition_sectors="65536" physical_partition_number="0" size_in_KB="32768.0" sparse="false" start_byte_hex="0xac000000" start_sector="5636096" />
</data>
and use it in QFIL.
Method 2 (easy with Playstore utility and a PC software)
Step 1: download Kingoroot (for PC) and ROOT the smartphone
Step 2: copy recovery on the smartphone
Step 3: download Flashify from GooglePlay and flash the recovery.
if i was usefull. please donate something.