You guys really need to read the article over better... It specifically says it's a fix for PS3's which have Nand and were bricked with OtherOS++. My PS3 would be a prime example of this, as that is exactly what happened to me when I accidentally skipped a step. Except with me it might not even work, due not having any power to the USB slots, the only hope may be if it works with the memory card reader slots.
This is not a "fix-all solution", only pertains to PS3's with the above conditions.