To use firmware from GSMROM with Odin, the general steps are: Preparation: Samsung USB Drivers and the latest version of Download Firmware: Get the correct firmware for your specific model from GSMROM.net or similar sites like Boot to Download Mode:
: Ensure your phone is at least 50% charged to avoid a shutdown during the process. How to Flash Firmware with Odin gsmromnet odin better
Neither is "better" without the other. But if forced to choose which is more valuable, Odin is marginally better because you can source firmware elsewhere (Frija, SamLoader), but you cannot flash with any other tool as reliably as Odin. Odin is the bottleneck; firmware is a commodity. To use firmware from GSMROM with Odin, the
Pro tip: Always uninstall old Samsung USB drivers before installing the ones included in their package. Odin is the bottleneck; firmware is a commodity
There are specific scenarios where the source (GSMROM.NET) is more valuable than the tool (Odin).