Knowledgebase
Avoid random file-hosting sites. Downloading from untrusted sources can lead to malware or a bricked device.
Use T310.TWRP.3.1.1-0.flashable.zip if you already have an older custom recovery installed and want to update directly from the device.
: Before proceeding, it's always recommended to backup your data. Use TWRP to create a full backup if you have access to it, or use other backup methods if you don't.