qboot使用ymodem上传固件升级失败。

Press [Enter] key into shell in 5 s : 
Qboot>qboot clone download app
Erasing app partition ... 
Cloning firmware from download to app ... 17%[E/FAL] (fal_partition_write:437) Partition write error! Flash device(onchip_flash) write error!
[E/Qboot] Qboot clone firmware fail. write error, part = app, addr = 0000E000, length = 4096

Qboot>qboot verify download
[E/Qboot] Qboot verify fail. firmware infomation check fail.