> This can lead to multiple firmware variants for a specific device. It's not uncommon to see over 20 variants of a firmware for a specific Samsung device for e

> This can lead to multiple firmware variants for a specific device. It's not uncommon to see over 20 variants of a firmware for a specific Samsung device for example. This can be broken down by carrier, by region, by OS, etc.. for a number of different reasons. You forgot to mention this was fixed about 2 years ago when Google pushed mandatory changes in the way customisation are added to the firmware image.