请教下，在FEL模式下，通过如下命令加载了u-boot到mangopi-r3板子后，串口有输出，但是通过如下命令
> mtd erase spi-nand0 擦除nand提示如下错误
=> mtd erase spi-nand0
unknown raw ID 82e678b8
MTD device spi-nand0 not found, ret -19
这个是不是nand有问题呢？谢谢
=====================
U-Boot SPL 2020.07 (Nov 18 2020 - 19:31:42 +0800)
DRAM: 64 MiB
Trying to boot from FEL
U-Boot 2020.07 (Nov 18 2020 - 19:31:42 +0800) Allwinner Technology
CPU: Allwinner F Series (SUNIV)
Model: Allwinner F1C100s Generic Device
DRAM: 64 MiB
MMC: mmc@1c0f000: 0, mmc@1c10000: 1
Setting up a 800x480 lcd console (overscan 0x0)
In: serial
Out: vga
Err: vga
Allwinner mUSB OTG (Peripheral)
Hit any key to stop autoboot: 0
Card did not respond to voltage select!
Card did not respond to voltage select!
unrecognized JEDEC id bytes: ff, c8, 51
Failed to initialize SPI flash at 0:0 (error -2)
unknown raw ID 82e68588
List of MTD devices:
No MTD device found
=========================
Boot Device: fel
Boot Slot 0: empty
Boot Slot 1: empty
=========================
Booting from FEL...
=> mtd erase spi-nand0
unknown raw ID 82e678b8
MTD device spi-nand0 not found, ret -19离线
固件直接下载的 http://download.dfrobot.top/f1c/Camera_firmwareV0.1.zip 这个
用了链接 https://mangopi.org.cn/f1c_nand 的 from-fel-to-dfu.bat脚本可以烧写，但是到43%时又提示错误
==============================
Invalid DFU suffix signature
A valid DFU suffix will be required in a future dfu-util release!!!
Cannot open DFU device 1f3a:1010
Opening DFU capable USB device...
ID 1f3a:1010
Run-time device DFU version 0110
Claiming USB DFU Interface...
Setting Alternate Setting #3 ...
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 0110
Device returned transfer size 4096
Copying data from PC to DFU device
Download [========== ] 43% 33423360 bytes failed!
state(10) = dfuERROR, status(14) = Something went wrong, but the device does not know what it was
can't detach
Resetting USB to switch back to runtime mode
离线