烧录手册
每次编译好之后会在/project/sophon/1688_v2.0_source/install/soc_edge_wevb_emmc/package_edge生成sdcard.tgz的SD卡镜像，把这个压缩包的文件解压到SD卡里面（解压出来有75个文件），然后把SD卡放到板子的卡槽（U11），然后接上串口（U6）上电就可以看到烧录日记提示在升级过程，升级完成会提示reboot，直接断电重启就可以。
MMC write: dev # 0, block # 25628032, count 21232 ... 21232 blocks written: OK in 134 ms (77.4 MiB/s)
fs reading: //boot_emmc-misc.scr
790 bytes read in 12 ms (63.5 KiB/s)
## Executing script at 120000000
fs reading: //misc.1-of-1.gz
10220 bytes read in 9 ms (1.1 MiB/s)
Uncompressed size: 10485760 = 0xA00000
MMC write: dev # 0, block # 532480, count 20480 ... 20480 blocks written: OK in 129 ms (77.5 MiB/s)
emmc update done
bm savelog 813 bytes written in 3 ms (264.6 KiB/s)
all done
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot
Please remove the installation medium, then reboot