参照这里:https://blog.csdn.net/caoshunxin01/article/details/79355602 原机是一块mt7620A的通板,之前刷了一个叫WE826型号的固件,发现有点问题,想刷回联想的y1型号固件,通过web刷固件时会报: The uploaded image file does not contain a supported format. Make sure that you choose the generic image format for yo…