Unzip windows update and flash it with:

root@dev:/home/dpavlin/DELL_PERC-6-I-INTEGRATED_A11_R216024# megacli -AdpFwFlash -f FW612II.rom -a0
                                     
Adapter 0: PERC 6/i Integrated
Vendor ID: 0x1000, Device ID: 0x0060

Package version on the controller: 6.0.3-0002 
Package version of the image file: 6.2.0-0013 
Download Completed.     
Flashing image to adapter...
Adapter 0: Flash Completed.
Please reboot the system for the changes to take effect

Exit Code: 0x00