Man, Thank you soo much for this amazing guide! I was able to downgrade my PS3 Slim CECH-2001A 120Gb from 3.73 Official firmware to 3.55 then upgrade to Kmeaw 3.55 and I am soo thankful for your amazing guide!
I did bump into maybe 1 or 2 small mistakes in your guide like the "Check Your PS3's Minimum Firmware". In the second sentence it says
Just rename to PSUPDAT.PUP and place in a folder named UPDATE,
However, it should actually say Just rename to PS3UPDAT.PUP and place in a folder named UPDATE,
This has caught me slightly off guard but I noticed the mistake instantly and fixed the problem.
Other then this, I thank you once more Playerkp420 for your contributions Little by little, I finished downgrading my PS3 Baby!
At first, the E3 flasher installation gave me a Bios reading error "10001100" and I got soo annoyed by it, but then I took apart the PS3 a 2nd time and pushed the NOR clip as hard as a could until I heard a click and I even Taped two U.S Nickels on top of each other on the clip to provide pressure support. Wola! All works after!
Now, I will dissemble my PS3 and remove the flasher and I ask, besides all this, installing Multiman directly and 4.20 Spoof should work fine on Kneaw correct? Do you recommend anything? Thanks and God Bless ^.^