A new firmware update might shortly be heading to the Sony Xperia M4 Aqua, as the PTCRB has just certified build number 26.1.A.2.99. This compares to the current Xperia M4 Aqua firmware with build number 26.1.A.1.128. The update is certified for the single SIM model only (variants E2303, E2306, E2353).
The Xperia M4 Aqua Dual has seen no new updates certified, but if there are any big changes in the above firmware then we imagine a new update will also be following the dual SIM variant in due course.
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