Hi NiLuJe, just finished to install the Jailbreak + Fonts Hack on my K3 3G. All worked perfectly, thank you so much, now my wife can read her chinese books
But...on this wiki page
Kindle Font Hack for all 2.x and 3.x Kindles somebody says that the UK + Europe version has a serial number with B00A.
I bought mine by an authorized reseller in Switzerland and the serial number is B006*.
So, probably not all the resellers sells the "european" version, always take care and double check the serial number.
Using the files built for the US version (B006) worked perfectly.
I write this post, just to warn future users to follow the serial number and not the country where they bought the kindle...
Again, many many thanks!