We did some testing last night and FYI the 44 and 70 speed xex's are broken. Both set to values that are not in the manual speed range. Manual speed range is 80 80 through E4 E4 (Percent desired + 128 then convert to HEX)
44.xex sets the fans to 2C 2C, Using the proper calculation this should be AC AC
70.xex sets the fans to 46 46, Using the proper calculation this should be C6 C6
also seems there is some kind of signature or hash in the config block for the fanspeed as manually changing the values results in an E72
There is a patch posted on xboxhacker that converts Autospeed.xex to 100% speed and it actually sets the fanspeed to E4 E4 and works.
This post has been edited by SniperKilla: Jan 21 2010, 04:14 PM