Judging by the lack of AES, it's probably an i3-3120M, in which case it's just a typo. ¯\_(ツ)_/¯ I'd say that no BIOS update is necessary since the 3612QM was a launch processor for the E530, but here's the link just in case: https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/h0uj16ww.exe