E143-3 Error after 6 months of joy

After 2 weeks of nonstop calling, removing, swapping and replacing there is still no resolution to my E143-4 error on my secondary decoder (XV).

I even went to a DSTV walk in center, where the very same problem also persisted, not like the dozen of DSTV Call center assistants tried to blame it on a faulty installation.

After 2 hours at the walk in center and awesome service from the agent we discovered that (XV) doesn't work on either of my explora 1 or hdpvr P2. We replaced the 2 decoders with a new explora 3a. Eventually it worked.

At this stage i wonder why my setup worked for the last 6+ months with the explora 3a and the explora 1 as the (XV) decoder?

To conclude, DSTV didn't just insisted that i use a installer that cost me money but also have no solution to fix my problem but to purchase a new explora 3a to resolve my current predicament.