I also can share my experience with RMA
I bought some units SP20 in last days february.
In the second week I was trying to get the bestperformance from my SP20 and I downgraded to 2.5.12, with utility in web manager.
After this, my SP20 is not more SP20. It shows like a SP10 in webmanager and not mining.
Tried recovery sdcard, flashing ok, got chritsmas lights but really dont work.
Tried boot up SDcard and it works ok.
Tried with controlboard from other sp20 and works ok.
support take one hour to test and check, and it conclusion is "unable to boot from internal flash, boots successfully from SD, boot problem not recoverable from remote".
so I asked a warranty replace for controlboard, because it is not the original condition work.
The answer from Barbara is:
"... our policy not to replace machines that work with SD card reboot... "
My reply is that machine must work like original, and with more reason, it is damaged because a fail from upgrade firmware system (i get the upgrade with a nonvalid firmware for SP20).
sp20 can work for some days, but if I reboot the machine I am not sure if this is going to work or the SD will be corrupted ... just a incognite and I have a misvalued and problematic miner.
spondolies support recognise "...work with an SD it's not as reliable as the internal ..."
My goal is get a new controlboard, not the complete sp20, but they refuse to do it.
Imagine you can not boot your computer from harddisk and only with pendrive ... imagine you can only start your car if the door is open ... imagine ... you can imagine lots of situations but when a product is not working as original and it represent a value lose I think it must be fixed.
So I ask people and spondoolies guys in this forum your opinion about this.
Do you think this is the correct policy from spondoolies ?
how often do you reboot? If it runs with a BootSD it should be stable indefinitely (unless a power disruption or reboot mucks the sd card and you have to re-image it again)
most of my hardware runs weeks or months once its plugged in and configured. The control board probably costs SP-T something like $150 so its easy to see why they are hesitant to ship you one when a $5 sd card does the trick
hosted 10 km of my home, if i reboot for any reason it is incognite if the sdcard will be ok or not.
and i normally work remote, so i must go there.
yes they sell for 150$ ... but it really cost that ?
and it is not matter if it cost big or not.
it is matter of warranty product or not.