Controllable firmware upgrading device and method

The invention discloses a controllable firmware upgrading device and method, and the method comprises the steps of carrying out the encryption and decryption of firmware, upgrading times and authority level through an encryption and decryption algorithm based on a firmware secret key, an upgrading times secret key and an authority level secret key among a computer, an upgrading device and an elevator part; integrating a firmware upgrading function and a debugging function in the upgrading device; and dividing the two function operation authorities by using authority levels. Firmware upgrading equipment and debugging equipment are unified, the cost is reduced, and the convenience is improved; and on the premise that the tool is lost, manufacturers still have the function of controlling the use range and the use frequency of the device, so that own benefits are prevented from being damaged. 本发明公开了一种可控的固件升级装置及其方法，在电脑、升级装置、电梯部件之间，基于固件秘钥、升级次数秘钥、权限等级秘钥，用加解密算法对固件、升级次数、权限等级进行加解密；在升级装置中集成固件升级功能以及调试功能，利用权限等级划分这两种功能操作权限