: Confirm the router has sufficient Flash and RAM (typically 256MB Flash / 512MB RAM for this series).
Version 15.7(3)M9 requires more resources than older 15.1 or 15.2 images. If your hardware lacks the required memory, the download will fail mid-transit or crash during decompression. C1900-universalk9-mz-spa-157-3-m9-bin Fix Download
: If your hardware supports it, many community members suggest moving to the : Confirm the router has sufficient Flash and