Embeded programming

For this week assignment we had to make our chips do something.
Took my chip and tried programming it with Graham, who was really helpfull, we followed a guide from the CBA site and used his computer to program it as mine has to be rebooted as I could not do it with Terminal. we followed the instructions and we thought it had worked, but looking closely at it it showed an error 1. I couldn't figure out what was wrong with my board so I tried soldering another one.


I tried milling ang soldering a new chip so that I could do it from scratch this time, It was fairly easy this time as I have done it now for at least 7,8 times.

Soldering part was relaxing as always and this time I was faster than ever! everything ok so far.

Tried again in another computer with the same guide and the same message appeared.
I have several hypotheses abot this:
- My chip was not soldered correctly.
- I used the wrong attiny to program.
- I mistyped something during the process.
- Something desoldered while moving the chip from one place to another.
- I didn't put the correct pieces in the correct order or orientation.

Either way I will try to fix this as fast as possible with a TA, I'm not liking this mystery and I really want to make it work this time.
Hard week...