keros.ipk) is incompatible with firmware older than v5.x
KerOS : Update the Firmware
To update the firmware from v5.x, the regular update procedure can be used.
See system upgrade page.
Liveburner : Reset the Firmware of the product
2262b765404a40ddd5424ccb3dd0a0c557718de9246e3ffb10d0dfe2f4880dfb12CFEFB8D4630A34AA90C77E6C73A193292a214e7cdac5bea7284ac81e1aa13cb34113c633b829de2422e297ccdb1f53d62f2552771d7b3964629480aa885fdf