Version 0.9.185.0 represents the last major stable release before significant architectural changes were attempted in later versions (which often introduced bugs).
To help you get started with your specific device, could you tell me: Which are you trying to flash? flashtool 09185 best
As with any flashing tool, there is a risk of a "hard brick" if the connection is interrupted or if the wrong firmware is used. Final Verdict Version 0