to Sebastian404!!!!!!! Hello!
I have a zte kis plus (cosmote smart play), I have rooted the device and after that I installed a custom rom "r0_de-branded_roamer2-update-signed.zip". I would like to come back the default rom (the official one from cosmote smart play) and I have failed, please help me!!!!! :). I have tried all the official updates and the ones from zte official site and from other web pages and after that my phone indicates that now the model is zte kis and not zte kis plus. And after all these updates I can't start up the phone in FTM mode.
I want a link with the official rom and a way to install it from zero (a clean install) and a software and a way of doing it (like odin for Samsung phones).