下面是烧录过程，你对比看看是否有差异的地方
khadas@mind:~/xiong/pyamlboot$ python3 boot-g12.py 20241220-vim3-tablet-aosp-main/u-boot_kvim3_ab.bin
Firmware Version :
ROM: 3.2 Stage: 0.0
Need Password: 0 Password OK: 1
Writing 20241220-vim3-tablet-aosp-main/u-boot_kvim3_ab.bin at 0xfffa0000...
[DONE]
Running at 0xfffa0000...
[DONE]
AMLC dataSize=16384, offset=65536, seq=0...
[DONE]
AMLC dataSize=49152, offset=393216, seq=1...
[DONE]
AMLC dataSize=16384, offset=229376, seq=2...
[DONE]
AMLC dataSize=49152, offset=245760, seq=3...
[DONE]
AMLC dataSize=49152, offset=294912, seq=4...
[DONE]
AMLC dataSize=16384, offset=65536, seq=5...
[DONE]
AMLC dataSize=1198960, offset=81920, seq=6...
[DONE]
[BL2 END]
khadas@mind:~/xiong/pyamlboot$ sudo -sH
[sudo] password for khadas:
root@mind:/home/khadas/xiong/pyamlboot# fastboot oem format
...
OKAY [ 0.164s]
finished. total time: 0.164s
root@mind:/home/khadas/xiong/pyamlboot# fastboot flash bootloader 20241220-vim3-tablet-aosp-main/u-boot_kvim3_ab.bin
target reported max download size of 788529152 bytes
sending 'bootloader' (1250 KB)...
OKAY [ 0.062s]
writing 'bootloader'...
OKAY [ 0.076s]
finished. total time: 0.139s
root@mind:/home/khadas/xiong/pyamlboot# fastboot erase bootenv
erasing 'bootenv'...
OKAY [ 0.017s]
finished. total time: 0.017s
root@mind:/home/khadas/xiong/pyamlboot# fastboot reboot bootloader
rebooting into bootloader...
OKAY [ 0.004s]
finished. total time: 0.054s
root@mind:/home/khadas/xiong/pyamlboot# cd 20241220-vim3-tablet-aosp-main/
root@mind:/home/khadas/xiong/pyamlboot/20241220-vim3-tablet-aosp-main# fastboot devices
C86314713F04 fastboot
root@mind:/home/khadas/xiong/pyamlboot/20241220-vim3-tablet-aosp-main# fastboot flash boot_a boot.img && fastboot flash boot_b boot.img && fastboot flash super super.img && fastboot flash userdata userdata.img && fastboot flash dtbo_a dtbo-unsigned.img && fastboot flash dtbo_b dtbo-unsigned.img && fastboot erase misc && fastboot erase frp && fastboot format metadata
target reported max download size of 788529152 bytes
sending 'boot_a' (34618 KB)...
OKAY [ 1.663s]
writing 'boot_a'...
OKAY [ 1.091s]
finished. total time: 2.754s
target reported max download size of 788529152 bytes
sending 'boot_b' (34618 KB)...
OKAY [ 1.668s]
writing 'boot_b'...
OKAY [ 1.071s]
finished. total time: 2.739s
target reported max download size of 788529152 bytes
sending sparse 'super' 1/3 (756116 KB)...
OKAY [ 36.785s]
writing 'super' 1/3...
OKAY [ 25.211s]
sending sparse 'super' 2/3 (726211 KB)...
OKAY [ 35.547s]
writing 'super' 2/3...
OKAY [ 25.876s]
sending sparse 'super' 3/3 (77308 KB)...
OKAY [ 3.779s]
writing 'super' 3/3...
OKAY [ 2.717s]
finished. total time: 129.915s
target reported max download size of 788529152 bytes
sending 'userdata' (2284 KB)...
OKAY [ 0.117s]
writing 'userdata'...
OKAY [ 0.666s]
finished. total time: 0.783s
target reported max download size of 788529152 bytes
sending 'dtbo_a' (4 KB)...
OKAY [ 0.006s]
writing 'dtbo_a'...
OKAY [ 0.007s]
finished. total time: 0.012s
target reported max download size of 788529152 bytes
sending 'dtbo_b' (4 KB)...
OKAY [ 0.006s]
writing 'dtbo_b'...
OKAY [ 0.007s]
finished. total time: 0.013s
erasing 'misc'...
OKAY [ 0.011s]
finished. total time: 0.011s
erasing 'frp'...
OKAY [ 0.007s]
finished. total time: 0.007s
mke2fs 1.46.6 (1-Feb-2023)
Creating filesystem with 4096 4k blocks and 4096 inodes
Allocating group tables: done
Writing inode tables: done
Creating journal (1024 blocks): done
Writing superblocks and filesystem accounting information: done
target reported max download size of 788529152 bytes
erasing 'metadata'...
OKAY [ 0.052s]
sending 'metadata' (52 KB)...
OKAY [ 0.009s]
writing 'metadata'...
OKAY [ 0.035s]
finished. total time: 0.096s
root@mind:/home/khadas/xiong/pyamlboot/20241220-vim3-tablet-aosp-main# fastboot reboot
rebooting...
finished. total time: 0.050s
root@mind:/home/khadas/xiong/pyamlboot/20241220-vim3-tablet-aosp-main#
文档中也更新的Main分支的镜像下载链接