把SD卡固件手动烧写到flash时 fatload 错误提示：Invalid FAT entry

# fatls mmc 0   可以

# fatload  mmc 0  0x80600000   xxx.bin

reading  xxx.bin
Invalid FAT entry
8192 bytes read in 8 ms (1000 KiB/s)

class 4的SD卡有问题 更换一个class 10 的SD OK！

不注意上面的提示，接着执行下面命令：尴尬，烧死了！就用烧录器flyRPO烧了。

# sf  probe ; sf  erase  0x0  0x1000000 ; sf  write  0x80600000  0x0  0x1000000 ;save; reset
the manufacturer ef
SF: Detected W25Q128

--->probe spend 4 ms
SF: 16777216 bytes @ 0x0 Erased: OK
--->erase spend 29382 ms
SF: 16777216 bytes @ 0x0 Written: OK
--->write spend 5601 ms
the manufacturer ef
SF: Detected W25Q128

Erasing SPI flash...Writing to SPI flash...done
reset in 4ms
 

正常：

# fatload  mmc 0  0x80600000  xxx.bin 
reading  xxx.bin
15679488 bytes read in 923 ms (16.2 MiB/s)