Stefano, it's the site that I use. It is in croatian language. Very good reviews, very realistic,very professional team. If Google translate is any good... Big hello from Slovenia.
http://www.racunalo.com/
I have the same problem with 64GB no name card from Ali. Now I bought one Samsung and one Toshiba 64GB and both works perfectly. But you said, that you have no problems with older versions of Rom, so I don't know...
I also use tempered glass from Ali. Tried chipper one, and the other. There is no difference by my opinion. But I bought one for my wife's RN2, and it have no hole for selfie camera, ha, ha... RN2 original.... I also bought silicon case on Ali. It's really chip, and is ok(good grip). Big hello...
I'm sorry, i don't have a solution for zot71, but i can confirm what Stefano said. I also have no problem with 6.1.29. My router is Cisco EPC3925, if that is any help. RN2 Prime.
It's Chinese spring festival, so I think, there will be no update till 15. February. It is also Friday evening and it is party time. That is good enough for me, boys..... Have a great weekend everyone.