Sony PRS-T1 Lockscreen problem

Sorry to all Czech readers, but this article should be primary in English. A few days ago I bought Sony PRS-T1 e-ink reader. I root it and unlock Android on it (http://wiki.mobileread.com/wiki/PRST1_Rooting_and_Tweaks). Everythink works fine, but one day I set up PIN lock using standart Android settings. There is allowed use 16 digits PIN. OK […]