Version transition: 1.01 -> 1.04 Is update: False Update model: 0 Original url: https://jc-print.oss-cn-hangzhou.aliyuncs.com/print/cloudprint/merchandise/sku/20201203/a712a15e0abf0f80c7c9a620845d9099-B21-C2B_V1.04.bin Description: 解决 B21 使用过程中电机无故发热的问题