Misc fixes

I just pulled out the RAMBo-Uploader repository and gave it a try. Found a couple of issues with the code that I fixed. However, I don't know yet if it's actually fully working or I only eliminated the obvious errors.
Is it possible to have instructions on the README on how you use this for testing the boards and if it's possible to also upload the JIG board files? This is kind of useless without the controller hardware.
Thanks.