No. Unisoc has removed all legacy RDA tools. The only working links are community-mirrored on archive.org.
Because these chipsets are often found in older feature phones or budget smartwatches, official manufacturer websites are often unavailable. Most active links are hosted on community repositories and Google Drive: coolsand rda flash tool link
To get started, you'll need the tool itself and the correct drivers to ensure your PC recognizes the phone. coolsand rda flash tool link
The CoolSand RDA Flash Tool comes with several features that make it a popular choice among users: coolsand rda flash tool link
: For many keypad phones, you must long-press the 0 (zero) key while connecting the USB cable to enter boot mode.