(adsbygoogle = window.adsbygoogle || []).push({}); i have a old ps3 in demonstration mode to bypass game updates and i want it to be on the official fw (its on 4.7 but when i go into recovery mode and try to go to 4.78 ofw or go up to 4.80 ofw it says the data is corrupted and I've tried both fw's on 2 flashdrives and same error. Any way of fixing this and getting back to ofw?

Yes you need a reverter, you can't just use ofw. Here's 4.78 reverter:

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Thanks <3