RB450G upgrade 3.21 to 3.28 Kernel panic - not syncing...

Has decided to update from version 3.21, on a site version 3.28 is accessible, has downloaded routeros-mipsbe-3.28.npk has filled in through Winbox. The router has rebooted also was gone…Решил обновить с версии 3.21 , на сайте доступна версия 3.28, скачал routeros-mipsbe-3.28.npk залил через Winbox. Перезагрузился и роутер пропал…
It will be connected probably only through r232 where подключится возможно только через r232 где
I see kernel panic, the router is not loaded further…, prompt as me it to reanimate?вижу kernel panic, роутер дальше не грузится…, подскажите как мне его реанимировать?
(Addition)
RouterBOOT booter 2.20RouterBOOT booter 2.20

RouterBoard 450GRouterBoard 450G

CPU frequency: 680 MHzCPU frequency: 680 MHz
Memory size: 256 MBMemory size: 256 MB

Press any key within 2 seconds to enter setup.Press any key within 2 seconds to enter setup..
loading kernel from nand… OKloading kernel from nand… OK
setting up elf image… OKsetting up elf image… OK
jumping to kernel codejumping to kernel code
Kernel panic - not syncing: No init found. Try passing init = option to kernel.

Through Winbox, NetInstall it is not connected… :frowning:
Please help)

Friends, what who did not meet a similar problem?

Use netinstall to reinstall software.

Thanks before to create this post I have familiarised with restoration methods…, but at me does not find netinstall RB,
How to me to come in RouterBIOS that Set the RouterBoard to boot from Ethernet interface? thanks)