Always scan downloaded files with an antivirus tool. The official utility is a simple standalone executable or installer and should not require a "download manager" or browser extension to run.
If you get “Synchronization failed”: philips lpc2000 flash utility v2.2.3 download
The LPC2000 Flash Utility is a Windows-based PC application designed to program the on-chip Flash memory of ARM7TDMI-S based microcontrollers from NXP (formerly Philips Semiconductors). Always scan downloaded files with an antivirus tool