What is reflash?

"Reflash" refers to the process of updating or replacing the firmware or software on a device such as a computer, smartphone, or car's engine control unit (ECU). This is typically done to fix bugs, improve performance, add features, or patch security vulnerabilities. Reflashing can be done through various methods, such as through an over-the-air update, a USB flash drive, or through specialized software and hardware tools. It is important to note that improper reflashing or using unauthorized firmware can damage the device or void its warranty.