How to mod your halo 3 service tag 1. Open your profile folder 2. Look in the first folder in the profile folder and your profile should be there 3. Extract it 4. Open it up in a hex editor 5. Search your service tag (have unicode checked) 6. Once you found it Change to whatever you like (it has to be a letter and 2 numbers) 7. There are 2 occurrences of your service tag, change both 8. Rehash and Resign, if you have supermodders profile tool just save package. If not you have to have a profile thats under 1mb to hash and sign with a regular resigner. MAKE SURE TO SAVE A BACKUP IF IT DOES NOT WORK List of un-allowed service tags: A23,L17,I17,E43,A00,B00,C00,D00,E00,F00,G00,H00,I00,J00,K00,L00,M00,N00,O00,P00,
Q00,R00,S00,T00,U00,V00,W00,X00,Y00,Z00.A01,A20,A55,C17,E51,E74,F43,F46,F48,F49,
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00,L00,N19,N34,N64,N84,P00,P52,T17,U50,V50,Z17