The Sony Xperia E3 (D220X) is currently seeing new firmware builds roll out. The HSPA+ Xperia E3 (D2202) has seen an update moving the build number from 18.4.A.1.25 to 18.4.A.2.13. Changes include improved power management and bug fixes – the Android build remains on version 4.4.2.
The LTE variants of the Xperia E3 (D2203 and D2206) are updated from build number 18.4.C.1.29 to 18.4.C.1.36. A new firmware build (18.4.C.2.12) for these models have also been certified by the PTCRB. The Xperia E3 Dual (D2212) has also seen a new build number certified in the form of version 18.4.B.2.14.