You can now download ZTE Optus Blade D (T610) official firmware from the link here, and follow the provided flashing instructions to learn how to flash the stock rom.
Two (2) ROMs are available for download here. Both ROMs are the same, but have different flashing procedure. The first Rom requires stock recovery to flash, while the second is for TWRP.
So, if you don’t have stock recovery installed on your T610 smartphone you can still restore your device to its official state via TWRP.
If you notice that any of the links provided below is broken or doesn’t work, please post in comments section so we fix and update it ASAP.
Download Options
File Name: DIS_RU_BEELINE_T610V1.0.0 (Stock R).zip
Size: 875 MB
Flashing requirement: Stock Recovery
Firmware – Download
File Name: DIS_RU_BEELINE_T610V1.0.0 (TWRP) .zip
Size: 888 MB
Flashing Requirement: TWRP
Firmware – Download
How to flash
Click here to view complete flashing instructions for any of the above firmware packages. If you have any issue with flashing, post in comments section below for assistance.