Hello,
I'm about to purchase a secondhand XTL for about $27 (Php 1,500) but it has an "Invalid code error 4". I'm having second thoughts if I'm gonna buy it because I'm not sure if it's still fixable or not. It will be a bang-for-the-buck if it is but if not that would be a bummer because $27 is a lot here in the ph. The seller said that he got it from a trade few months ago and he was able to use it until the error occurred so he's selling it as a defective unit. Base on the picture, the Line 6 monkey on his PC can still detect the unit but it seems that he doesn't have an internet connection. The question is, has someone fixed the same issue before? I've read the thread already but it seems that no one has fixed the same issue or there's no answer to it yet. You may see the pictures for your reference.
Best Regards,