He downloaded the file: Tenda_D301_V2_update.bin . Small. 3.2 MB. It felt too light, like a promise whispered through a screen door.
If Tenda’s official link is dead, use the Wayback Machine to fetch old download pages. Navigate to web.archive.org and enter Tenda’s old support URL. tenda d301 v2 firmware update
Do not download firmware from random forums or file-hosting sites. Only use official sources. He downloaded the file: Tenda_D301_V2_update