What issue are you having with it? It might be a setting issue?
It is best to obtain any firmware updates from the vendor you purchased it from so that you do not run into issues. Any firmware you find here or elsewhere is obviously proceed at your own risk. We have many threads here where someone tried an update with a firmware they found on the internet and bricked their unit.
Many units being sold are Chinese hacked units into English that will either brick or go into Chinese upon updating. Some vendors will be upfront and tell consumers that as part of their website, but many do not or the consumer forgets...here is one such example....
Thanks for the info….yes, well aware of the pitfalls….bought from Andy directly
issues: fails to recognize sd card….changed card….still not recognizing….auto tracking no longer working…next step will be factory reset….after that, next option will be firmware