So I thought... that maybe you used the wrong firmware... and changed the names of the folders to your liking... and then overwrote the firmware in your device with a bad version, intended for a different type of Vu+.
I bought a receiver zgemma7 and Vu solo SE v2 went into the load with zgemma both in non-working condition - I repaired zgemma7, here I am trying to restore this one, and I do not know the reason why Vu solo SE v2 stopped working.The last owner couldn't explain anything to me clearly.