How to read firmware build names

Build names are generally structured like this for all Samsung devices:

R175 XX U0 A U B 3
Model     
     Region
        Bootloader
           Reserved
             Year
               Month
                 Revision

Let's take R175XXU0AUB3 as an example:

R175 is the model number and corresponds to the Galaxy Buds+ (see model list below)
XX is unused for the Buds family. It would normally contain a region code.
U0 is unused for the Buds family. It would normally contain the bootloader version.
A is unused for the Buds family. It would normally refer to the current count of major software upgrades.
U is the year. In this case, U refers to 2021.
- U = 2021
- V = 2022
- W = 2023
- ...
B is the month. In this case, B refers to February.
- A = January
- B = February
- C = March
- ...
3 is the revision number. In this case, 3 refers to the third revision.

So, to sum it all up: R175XXU0AUB3 has been released in February 2021 (revision 3) for the Galaxy Buds+.

Model numbers:

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