But hardware is only half the story. The soul of this router lies in its .
If it ends in something like SP01 or SP02 (carrier specific), you are on a locked path. Updating (or downgrading) firmware on the B818-263 is not a "click to update" iPhone process. It is a manual flashing procedure using Balong Flash or the hidden upgrade page. Huawei B818-263 Firmware
If that page works, you can manually flash any official Huawei update file ( .bin ) without using the app. This is the safest way to revert to a generic Huawei firmware if your ISP messed things up. But hardware is only half the story