This is critical. On the product page, you will see tabs or a dropdown for "Hardware Version" (Rev A, Rev B, Rev C). Match this to the sticker on your router. Selecting the wrong version is the #1 cause of bricked routers.
D Link produces dozens of router series (DIR, COVR, DSL). The firmware is model-specific. Look at the sticker on the bottom or back of your router. You are looking for something like:
Before diving into the "how," it is critical to understand the "why." A firmware update is not a cosmetic feature update like a smartphone app. It is a low-level patch to the router’s operating system. Here is what a proper accomplishes:
Even with a correct , issues can arise. Here is how to fix them.