If I remember correctly, all that is required is a pin mod. You could also go with the Speed Strip if you are really nervous about it. Do a google and look it up. I found numerous articles on unlocking chips. None of them helped me since I had a super locked chip, but I didn't know that at the time.
what motherboard do you have that chip running at?
That CPU was made before AMD started locking their chips, so its completely unlocked.
If you mean "How do I get to the low multiplier range" then that's something totally different. and you will need to do a simple wire trick. But depending on your mobo, that might not be necessary
Answered this is your other thread. CPU is unlocked.
You didn't say exactly what the problems were(e.g no boot, lock-up, etc.); but if you were running stable at 165...165x13~2145, that's pretty good if you got there on stock volts. That board should have 6x-14x for multipliers. 165x14~2310. At that point Vcore would need a voltage jump.
If it doesn't unlock anything below 13 and you're trying to up CPU speed, no problem. Try 165 x 13.5 and bump your Vcore up a bit. Don't really think the lower multis would do you much good with a 1/4 divider.
2310 isn't even close to the highest I've seen the 2100Bs go, but it's pretty respectable if you can get there. After that, you could try bumping up the FSB 1-2 mhz at a time. 180s is easily attainable with the 1/5 divider, but with 1/4...