TWRP Recovery For LYF Flame 6 (LS-4005)
TWRP is an open source, community project. TWRP development is done by roughly 4 people at this point. We also have a large support community with many people who are willing to answer questions and help people with their devices either through our IRC channel or on forums like xda-developers. A custom recovery is used for installing custom software on your device. This custom software can include smaller modifications like rooting your device or even replacing the firmware of the device with a completely custom "ROM".
How To Install TWRP
install twrp in lyf flame 6 using this video guide
how to install without PC (root need)
Install Flashify (you can install from Play Store)
extract recovery zip
Open Flashify and give it root permission and then click recovery and choose 'TWRP_Recovery.img and flash
Now you can reboot into recovery mode