I tried to install curl, using opkg update followed by opkg install curl, and got
Installing curl (8.10.1-r1) to root...
Downloading https://downloads.openwrt.org/releases/24.10.0/packages/mips_24kc/packages/curl_8.10.1-r1_mips_24kc.ipk
Collected errors:
* opkg_install_pkg: Checksum or size mismatch for package curl. Either the opkg or the package index are corrupt. Try 'opkg update'.
* opkg_install_cmd: Cannot install package curl.
What can I do?