此固件仅适用于fir302B无线路由器，其他型号路由器请勿更新。注意固件升级后会清除路由器中的数据，升级前请先备份相关数据。(This firmware applies only to fir302B wireless routers, and other models are not updated. Note that the firmware upgrade will clear the data in the router. Please backup the data before u