Before installing, you need to make sure that the “unknown sources” option is checked in Settings> Security> Unknown Sources in order to install outside the PlayStore.
if somebody wants to know, he just copied over the MSNP11 protocol to the MSNP15 switch, because i can’t even offline message because it says i use MSNP11 and offline messaging isn’t supported in that version.
MSNP15 is way more complex. It implies SOAP servers and not just the MSNP server anymore. It transfers way more data so if you have a slow internet access it may be slower to connect, for example.
Unfortunately Mercury has had some bugs since its launch in 2011. Without the official developer and without the source code, we can do nothing to fix problems. Also we are not specialized in coding applications for android and neither program them, just change their servers.
Do not.
I have some knowledge about android system, kernel, modded roms that I acquired a few years ago while attending a developer forum. Then some things I can do. Port roms from one device to another different for example. Putting together some of what we know (@tristanleboss and me), we can better understand how everything works. Mercury is an application with encryption.
Also now I work with physical repairs on motherboard of android devices.