I have ctek skyrouter z4400 and I'm wondering if it may be possible to attempt to install openwrt on it?
the wiki does not specifically mention the 9625.
It has a at91 sam 9625 processor 128MB DDR2 RAM 256MB SLC NAND Flash.
It has a microsd slot that auto boots firmware updates so it should be easy to recover.
currently it runs a custom linux 3.16 running ctekOS (that is available to developers)
It has an onboard uart so it should be easy enough to pull the partition layouts etc from Uboot.