If your T1-701u is completely dead (no vibration, no screen light), do not throw it away. The is still your best bet.
Copy the UPDATE.APP file from your downloaded firmware into this dload folder. Important: Do not rename UPDATE.APP. Do not put the dload folder inside another folder. It must sit at the top level, like X:\dload\UPDATE.APP (where X is your SD card drive) .
However, for the purpose of device longevity and repair, this lack of a "secure boot" chain is beneficial. It allows technicians to revive devices that would otherwise be electronic waste.