Need to upgrade from Android ver. 4.4.4 to Android ver. 5.0 with unlocked bootloader

[gemarkop]

I have an Xperia Z and recently I unlocked the bootloader.
However now I cannot install (upgrade) to the Lollipop Android 5.0 (10.6.A.0.454) from Android 4 (10.5.1.A.0.292).
Please advise on a step by step process since I am not experienced.

 

[Pyramid Head]

I have an Xperia Z and recently I unlocked the bootloader.
However now I cannot install (upgrade) to the Lollipop Android 5.0 (10.6.A.0.454) from Android 4 (10.5.1.A.0.292).
Please advise on a step by step process since I am not experienced.

try pc companion

or

flashtool BE ADVISED: you will lose you data, do a backup
https://www.google.gr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCsQFjABahUKEwjTu_Dy07jHAhWJOBoKHTRvAwg&url=http%3A%2F%2Fxperiafirmware.com%2F8-firmware%2F33-sony-xperia-z-c6603&ei=Y03WVZP-IInxaLTejUA&usg=AFQjCNGu3M3D_ZIEbPGarPHRIxsV5vqnYA&sig2=uLl0b3KBvfdAPOd4YkX_NA