(adsbygoogle = window.adsbygoogle || []).push({}); So I'm getting a new PS3 Slim on Black Friday. From what I've read, the new ones come with 3.41, so I'm planning on jailbreaking it. But my question was, if I were to install the FTP manager, and then update my PS3's firmware, would I lose the FTP manager?

I'm pretty sure you will but what you can do is once you jailbreak it put on the modded patch you want then make sure it stuck by trying it out in split screed then once you update to 3.5 you should still have the modded mw2 patch on 3.5. That's what I'm planning on doing, its a bit costly but if you buy the original psjailbreak for 100 (the price was just dropped) it will come with an unlimited use of the ps downgrader so you can always just downgrade jailbreak upload the patch you want then update and use the patch and once you want another patch just downgrade then jailbreak and upload a new patch again.