[U-Boot] jboot to uboot

[chronek]

Hello,

I have old Airlive Air3gii router, what comes with JBoot bootloader. I 
want change to U-Boot bootloader. If anyone know this Jboot bootloader 
and could help me, please share some knowledge. I am connected to router 
via serial and ethernet, JRecovery have small options:

|# help command list... reboot info load <adr> go <adr> dm <adr> wm <adr> 
<val> rm <adr> copy <src> <dst> <size> ip [ip] mac [mac] ping <ip> areacode|

It react to erase too, tftp working but router not accept any 3rd party 
image files.

cheers
chronek