[U-Boot-Users] how to update jffs2 files under uboot

hi,all

I know uboot support jffs2 read now i pack uImage and rootfs(uImage under /boot/uImage) to a jffs2 package and burn to flash,and it can display the files via "ls" command

Q:how to update a file(eg.uImage) under uboot does uboot support jffs2 write, if not , how to make uboot support jffs2 write

thanks!

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