Hello, I uploaded the recommended OS at the hp switch s5500ei-cmw520-r2208-s168.bin and configured the booting from this OS in the next time: The current boot app is: flash:/s4800g-cmw520-r2102p02.bin The main boot app is: flash:/s5500ei-cmw520-r2208-s168.bin The backup boot app is: flash:/s4800g-cmw520-r2102p02.bin When I connected to hp via console I didn't see errors, hp switch just was restarting all time.