This can "brick" the motherboard, requiring a replacement chip or board.
Updated firmware often allows higher maximum temperatures (e.g., raising the cap from 260°C to 300°C for the hotend, if hardware permits), enabling you to print nylon or polycarbonate. Sunlu T3 Firmware Update
There are two main hardware versions of the Sunlu T3. This can "brick" the motherboard, requiring a replacement
Updating to the latest version (such as or newer) can help resolve bugs in related features like jam detection and power loss recovery. Custom Firmware for SUNLU T3 by Kaot93 - Printables.com This can "brick" the motherboard