Think of it as more of a 1.5/2.71 Hybred. Has all the features of 2.71 and all the features of 1.5. Capable of playing 1.0 and 1.5 eboots. Has a more advance recovery mode menu with more options settings. Compatability on everything is like 99%(Meaning some homebrews might not work Example-Latest build of Monkey 64). But there are very few problems and those will improve in time. So some things may not work right now but if you really want them there are ways to get them to work as a temporary solution until a new update. And if your intrested in setting up this new firmware. I can help you and I will help anyone else who needs/wants help. Because if you don't know what you are doing it can be riskey setting up custom firmware and have a good chance of bricking your psp. Hope i answered your question.
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