I don't really have any thoughts as to whether Worboys and/or the Quaker idea are good or not.
I took it upon myself to research some websites and forums related to PSP modding. Here's a BBC
Article from February 2007 describing the first 'unlocking' of the PSPs firmware to allow the use of pirated games.
I found a blogpost also from February 2007 that details how to
mod the PSP to use batteries instead of a charger, so maybe Andrew wasn't using his PSP charger.
A blog post on Andrew's dad's blog recently detailed how Andrew
helped him make some shelves as a child, and was "He was around 10 I think and not at all bad with a chisel to cut slots for the small glass shelves and dovetail joints on the corners.". This boy was not a clumsy kid, with minimal research he could likely complete a PSP mod like the one detailed above, since it suggests using a household iron to solder if you don't own a soldering iron (although he could access a soldering iron in school in a Design & Technology or Physics class).
Also, to clarify, they only painted his bedroom to blue last year when they were doing renovations, not just after his disappearance like some have claimed recently. It's all in that blog post.
Here's an interview with a man who cracked and shared pirated PC games. They are overlooked, average individuals:
Here are some archived links to interviews with PSP crackers/hackers. They mention being normal people with day jobs, partners, babies on the way, etc.
These are intelligent and skilled individuals in coding/programming. Andrew was very gifted in maths and science particularly, programming or coding is essentially more complicated algebra. I could definitely see a boy like that being interested in such things, and very good at it. A lot of programming can be done on a computer terminal, computer notepad or even pen and paper.
If Andrew did want to go off grid for whatever reason, and theoretically got very interested or good at programming and modding, it would be fairly straightforward to use connections via game pirating forums to access stolen credit card details to use for online purchases. For example the 18 year old arrested in
this case from September 2007, many people involved in this ring were never located or identified. Much like the hackers these days, these are teenagers up to (destructive) computer mischief, which they cannot quite comprehend the real-world implications of.
The question is: would a normal boy like Andrew become involved in this? Or did he meet up with someone from a forum or online gaming, like poor
Breck Bednar, who was killed by an older boy who he met on a gaming forum? Did he go to London because he thought he was buying a
mod chip and harm befell him?
Edited to remove link to hacking forum because that's probably not allowed. And also formatting.
Edit 2: I'll keep looking at old forum posts to see if I can spot any threads or messages that seem relevent. Likely I won't, but I've personally become interested in OSINT recently so I'm happy to put my time to good use.