Registered on this forum just to respond to this thread.
Got a fancy new EVO 4G from the office a few weeks ago. I was moved to the EVO from a Blackberry 9000 running on AT&T's network. I felt ever since I got it that attachments were coming down slow in my email, my web surfing was slower than it should be, and in general the network performance was junk. My Blackberry was snappy in all network performance regards as compared to my new EVO. At the suggestion of a good friend of mine I started doing some research, at the suggestion of my boss I took the phone into the local Sprint store......
The Sprint store was useless. 100% useless. They took an hour and a half to check the hardware. I was the 4th person in the store I think. They have done TWO hard resets on the phone causing me to lose all data, apps, contacts, etc. Luckily my contacts, mail, and calender resides on an exchange server, so it comes back pretty quickly. They finally told me that the phone seemed fine, and that the speedtest.net app was falsely reporting the speed (despite the results from my home wifi connection showing a consistent 10mb down). I politely asked for my MSL so that I could fix the problem myself, and was denied. The manager was called over, I explained my problems, and was denied my MSL number again. I said fine, it is what it is, then politely expressed my displeasure with the network performance, and went on my way. Just as a refernce, the speed INSIDE the Sprint store across what they said was a "fine" 3G connection was fairly consistent in the 60 to 100kbps down. Yea, less than .1mb down on the fastest connection they offer here in town.
So off to this thread I headed, downloaded the CDMA workshop, found my MSL number, did the changes to the network settings as directed, and DID NOT update the PRL.
Network speeds on my couch through the 3G connection before were between 120 and 140kbps down, and in the low 60's up. After the setting changes, the speeds are up to between 750 and 800kbps down, and in the high 900's up. Amazing change! Everything feels more "normal" to what I am used to experiencing on my AT&T Blackberry. My Facebook news feed no longer takes over a minute to load, it loads new in 15-30 seconds. Forums are loading in equally faster times. The network feels "snappy" like I would expect from it.
I'm going to test my hotspot performance next. I had problems with it connecting yesterday at all. Might have been on a bad tower, might have been the rainy weather, I don't know. But timing out while trying to load a remote desktop session just wasn't acceptable, and what ultimately prompted me to do the fix.
All in all, I'm very happy with the results, and would like to thank the original poster for putting this together. Great step-by-step write up! 5 Stars!