Th solutor did you solve your 128k sim problem? (I was reading on the ETO talk page says sim 1 only accepts 64k?)
There isn't a problem with 128K sim, there is a problem with the 128K SIMs from Vodafone Italy, anything else I tried works perfectly, no matter if 128k or not.
BTW I haven't solved the problem yet, I tried everything obvious and less obvious.
I tried the B10, B12 and B13 based ROMs,I tried even a turbosim clone, and I tried replacing the android radio and SIM related libs with the ones taken from the Gsmart from gigabyte, and other single SIM phones.
Using the libs from a single SIM phone, the second SIM became (unsurprisingly) inactive, but the first one wasn't fixed (worked with 64k only).
So I'm reasonably sure that the problem is not in the android part of the phone.
The problem must be in the baseband section, so pretty hard to discover w/o the help of ZTE technicians or from a very skilled developer with a very good knowledge of that section.
I don't know why etotalk mention the 64k SIMs in general, likely is because is pretty hard to explain what SIM work and what doesn't, but is possible they had other feedback from users from other countries.
I asked about that notice on their website, but I got no reply so far.
P.S. I still haven't tried an updated baseband, it's available on some Chinese forums as (hidden) attachment, the problem is that, usually, being registered there is not enough to see the hidden sections