goolpone You are making some assumptions about "codebase" that are just wrong. First of all, the fork is not "official" but rather a personal work from knaerzche , who may have thousands of reasons not to keep the master branch up with releases. I don't see a "freezed" status anywhere on this github fork, so your expectations have no basis.
The serial output unfortunately is a very fundamental debugging tool with this kind of boards, without the UART dump it is close to impossible to say what is wrong with your image. There may be possible configuration faults, but we will never know. The boot process is quite complex and there any dozens of variables involved in.