Using the wrong firmware version or interrupting the flashing process can permanently "brick" (disable) your ONT. Always ensure the version matches your hardware sticker.
Searching for an .exe link for firmware is common, but users should be cautious. Official firmware is usually provided as a .bin or .zip file for web-interface uploads, while .exe files are typically "one-click" flashing tools for PC connection. rewritev300r13c10spc800exe link