New Laptop (Upgrade on Fujitsu Lifebook)

[Jellybeanbon]

Hi,

I'm looking for advice on an upgrade on the following laptop:

Fujitsu Lifebook U Series
Model: UH552

The laptop is used for travelling and thus it is important that the upgrade must still be light and small like the Fujitsu.

I do not know much of laptops but I assume the Fujitsu is an i3 and the upgrade should preferably be an i5 or i7.

Budget: under 10k

Any ideas?