If you want the to be portable across devices – that’s impossible due to different chipsets (usually ZTE or Qualcomm inside). What you can do instead:
: Firmware is often tied to specific hardware revisions and region-specific carrier configurations. Next Steps for Troubleshooting fiberhome sr120a firmware portable
A: No. Every router needs firmware to function. “Portable” refers to the update method, not the router’s operation. If you want the to be portable across