Some smartphone vendors can get you confused with the sheer number of variants they give to a single phone and a good example is Asus. Besides the many variants of the ZenFone 3, some of these variants like the ZenFone 3 Max also get even more variants.
At the end of July 2018, the Taiwanese company updated one of the ZenFone 3 Max variants codenamed ZC553KL to Android 8.1 Oreo, leaving other variants in the cold for months. If you own any of the ZenFone 3 Max handsets with model number ZC520TL, an update to Oreo 8.1 is now available for download.
Related: ZenFone 3 Pie update news
A changelog has already been published, which also mentions an update to Asus System and a new security patch, although it doesn’t specify the month.