Xperia 1/5 and Xperia 10 II receive September 2020 security patches
Sony is rolling out September 2020 Android security patches for a number of devices including the Xperia 1, Xperia 5 and Xperia 10 II (Mark 2). The Xperia 1 and 5 have received an update that moves the build number to version 55.1.A.9.101, and patches from August to September 2020.
The Xperia 10 II moves the build number to 59.0.A.8.21 and the patches from July 2020 to September 2020.
Recent Sony Xperia firmware updates
Xperia 10 II
New update: 59.0.A.8.21 (Security patch: 1 September 2020)
Old update: 59.0.A.6.24 (Security patch: 1 July 2020)Xperia 1 / Xperia 5
New update: 55.1.A.9.101 (Security patch: 1 September 2020)
Old update: 55.1.A.9.75 (Security patch: 1 August 2020)
