This firmware is only for E70 and is NOT applicable to E70 Velvet nor any other models. If this firmware is flashed to other models, it will immediately cause the product to be unusable and unable to repair by yourself. If the firmware of your E70 is already V1.03, then your E70 needn't this update.
The firmware version of your E70 could be check at this tool.
What's updated:
Fixed the bug of wrong bit rate.
Firmware and tools for Windows: Download here (Firmware and tools for Windows: Download here (This update requires a Windows 10 or higher OS with driver installed. Drivers could be download here).
Firmware and tools for MAC: Download here
If you have questions about the update of your E70, please contact us before updating this firmware.