> > > How big are these firmware blobs? > > > > > The largest file I came across is 400K. https://hack-gpon.org/ont-fs-com-gpon-onu-stick-with-mac/ Suggests that some GPON devices have 16MB of flash. Ideally we don't want to map a 16MB firmware image into the kernel address space. A high end switch could do it, but a typical OpenWRT 'cable modem' is likely to have trouble. Andrew