No, it's new, just bought. I did a "reindex" and for 3 days (I think I have 3 more days left to finish) the operation seems a bit "robust" to me. Many crashes, restarts, errors and blocks... so far more doubts than certainties.
[/quote]


Did you ever get yours to work?
[/quote]

Honestly, I've had only the issue I mentioned with using the units on the "new" software version on WIFI. I prefer hardwired anyway but had one unit in my "back hall" with no ethernet cable access (I set up an older WIFI router as an "extender" on my network, hardwired the Apollo 1 Node unit to it, zero issues since). I also had to re-install the software once (Apollo 1 unit, early on) so replaced the original sim card with a newer one I had on hand with no issues since. I have one original Apollo Node Unit with two Apollo Miners running on it as well as 2 Apollo 2 Node units each with one Apollo Miner connected. I heat my small home with them and again, have had no issues other than what I've mentioned already. I did follow all of the set-up instructions to the letter, have very good internet service with my own high quality modem and router, and all my electronics plugged into APC Line-R Voltage Regulator units. Wish I could provide more help but would suggest:

*Replace the original sim card with a same size higher quality one (cheap) and re-install official software
*Consider buying a cheapish voltage regulator and use that to protect/ensure the Node Miner is getting clean voltage (and the one's I use act as a surge protectors too; we suffer spikes/minor outages here in the East Tennessee Valley due to storms at times)
*Review and be sure to follow directions for set-up to the letter
*Don't run the miner while downloading the chain

I realize this is all pretty basic but I honestly have had a great experience with these miners and can only suggest what has worked for me. I hope this helps even if just a little. Good luck!