The Handy T700X is a compact portable device (audio/recording/player or handheld gadget depending on your model) and "firmware portable" typically refers to a firmware package designed for portable installation—either a standalone update file you can load from a USB/SD card or a lightweight installer that runs without full software suites. This post explains what to expect, how to prepare, and step-by-step instructions for a safe update.
Install the tool on your PC and connect your T700X via a USB cable. handy t700x firmware portable
: Even "portable" software usually requires VCOM or MTK USB drivers installed on your PC to recognize the Backup IMEI Handy T700X Firmware Portable — What It Is