About LinkIt ONE & Assist 2502 Development environment

Previously i wanted to test Assist 2502, installed its SDK, and with LinkIt Firmware Updater (2502 incidental) update - use eclipse made a few exercises on LinkIt ONE board.
Now want back to use the original arduino development environment, use LinkIt Firmware Updater Update (arduino incidental), has been Timeout, no longer use arduino development
How to handle it?


please try the attached flash tool, thanks.
FlashTool_v5.1428.00.zip (8.18 MB)
flash_tool.pdf (622 KB)