Xperia Arc build number 3.0.1.A.0.145 vs build number 3.0.1.A.2.181

[#1]

Does anyone know what the differences are between the 3.0.1.A.0.145 build vs the 3.0.1.A.2.181 build for the v2.3.3 software release?

Thank you

[#2]

Markus-SEAnswers,

Thanks for such a precise and informative answer.

panyah

[#3]

Thank you Markus for the information.