启动后直接进FEL了，按理来说能直接烧录，也识别到设备了，但是一烧录等待2秒直接报错，进度条都没，通过sunxifel的uboot命令启动uboot2026或2024后能正常识别DRAM和eMMC，所以硬件因该没问题，不方便卡刷，我是之前ums挂载后乱dd，好像给搞没了，通过sudo dd if=u-boot-sunxi-with-spl.bin of=/dev/sdb bs=1024 seek=8刷入uboot时速度来到了2Gbs，明显不正常啊，sync后重启也无法启动，目前启动log如下，求助大佬！：
BOOT0 is starting!
boot0 version : 3.1.0
reg_addr 0x01f00100 =0x00000000
reg_addr 0x01f00104 =0x00000000
reg_addr 0x01f00108 =0x00000000
reg_addr 0x01f0010c =0x00000000
reg_addr 0x01f00110 =0x00000000
reg_addr 0x01f00114 =0x00000000
DRAM DRIVE INFO: V1.5
DRAM CLK =552 MHZ
DRAM simple test OK.
dram size =512
card boot number = 2
card no is 2
sdcard 2 line count 0
[mmc]: mmc driver ver 2014-07-07 16:54
[mmc]: Try SD card 2
[mmc]: mmc 2 cmd 8 timeout, err 0x00000100
[mmc]: mmc 2 cmd 8 err 0x00000100
[mmc]: mmc 2 send if cond failed
[mmc]: mmc 2 cmd 55 timeout, err 0x00000100
[mmc]: mmc 2 cmd 55 err 0x00000100
[mmc]: mmc 2 send app cmd failed
[mmc]: Try MMC card 2
[mmc]: MMC ver 5.0
[mmc]: SD/MMC Card: 4bit, capacity: 3776MB
[mmc]: vendor: Man 0x00110100 Snr 0x025929aa
[mmc]: product: 004G6
[mmc]: revision: 3.0
[mmc]: SD/MMC 2 init OK!!!
sdcard 2 init ok
ERROR! NOT find the head of uboot.
Ready to disable icache.
Jump to Fel.
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