I'm the developer for Dropbear SSH, I've had a report that Qt Creator can't connect to 2014.64:

11:37:10: Connecting to device...
11:37:11: Connection error: SSH Protocol error: Maximum packet size too low.
11:37:11: Deploy step failed.

I think the check in Qt Creator is wrong:
https://qt.gitorious.org/qt-creator/qt-creator/source/4c76e40617d22d3578bb95973b54b0e266591e7c:src/libs/utils/ssh/sshchannel.cpp#L138

const quint32 MinMaxPacketSize = 32768;
...
if (remoteMaxPacketSize < MinMaxPacketSize)

{ throw SSH_SERVER_EXCEPTION(SSH_DISCONNECT_PROTOCOL_ERROR, "Maximum packet size too low."); }

The spec https://tools.ietf.org/html/rfc4254#section-5.1 doesn't have a minimum maximum packet size for channels. The number 32768 comes from the protocol layer above in https://tools.ietf.org/html/rfc4253#section-6.1

It will be easy to increase Dropbear's limit slightly (currently 32759, it allows for headers between the channel and transport layers). It's probably worth fixing in Qt Creator too.