The Galaxy A51 is now in the process of picking up the July 2021 security update. The new release, identified by PDA version A515FXXU5EUG2, has just been spotted in Russia several hours back. Based on Samsung's version naming practices, it would appear this particular download might carry some additional features or user-facing improvements on top of the actual security patch level upgrade. What those are, exactly, we still cannot say.
Looking at the wider picture, this firmware upgrade has landed weeks after Samsung first started deploying the July 1st, 2021 security patch level. So far, the company's rollout encompassed 41 devices, or nearly a hundred of them if you count every minor hardware variant in between.
Any chance the update is already live on your end?
Either way, the doors are open for the July 2021 security update to land on your Galaxy A51 in the very near future. The device was still in the process of receiving last month's update as late as last week, which is when the June patch started reaching compatible units in Canada.
As these things usually go, you can attempt speeding things up a bit by going to Settings > Software update > Download and install. Doing so might trigger the download manually, assuming the rollout already started in your area. That is to say, this technique most likely won't work outside of Russia until later this month. Alternatively, our firmware archives stand ready at your disposal. So long as you're willing and able to quite literally take the matters into your own hands and flash the full system images containing the new security update to your device.
