YModem协议有问题，使用Ymodem进行传输时开始帧使错误的

02 00 ff 53 41 2d 41 30 31 2d 4d 43 2e 62 69 6e 00 38 39 32 31 36 20 31 35 31 33 30 32 32 36 32 35 37 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

这个是开始帧的数据，应该是SOH不是STX，且CRC是有问题的

Use the reported start-frame bytes as the reproduction case. Locate the YModem transfer implementation and inspect how it selects SOH or STX and computes the CRC. Done means the start frame uses the expected SOH marker and produces a valid CRC for the reported data.

Written by the indexing model from the issue text.