| Firmware | Language package | |
|---|---|---|
| Primary role | Core device software, features and hardware support | Interface language resources |
| Typical source | Manufacturer release or maintained archive | Separate compatible installation workflow |
| Expected result | Version and feature changes | Additional or restored interface language |
| Main risk | Wrong model, interrupted power, unsupported downgrade | Version or hardware incompatibility |
Why the distinction matters
Installing current firmware may be correct for stability but irrelevant to adding Russian. Reinstalling a language package may restore the interface but will not update sonar features or module compatibility.
What to ask before installing
Identify the desired outcome first: update core software, restore a missing language, add a new language, or diagnose a regional limitation.