"Dump Editor Ninebot v2.0.0.0 " has all the firmware embedded in it. You just select the version you want (I suggest to try 1.1.9) and MRN76's program did the rest. As I reported in the "only for the brave" thread the precise instructions I followed were those at MRN76.ru, specifically: http://mrn76.ru/index.php/programming which links in turn to: https://yadi.sk/d/HDT0E2UX3G8XYc https://yadi.sk/d/C38vGNAI3LMqKq