Post: [Vid-TuT]How to change the checksum on a Modified MW2 pkg
07-08-2010, 09:36 PM #1
shane1230
Are you high?
(adsbygoogle = window.adsbygoogle || []).push({}); Ok so my inbox is being filled with "how to you get past the checksum"

Written Tut


1. Calculate the original PKG's checksum in HxD


Analysis>checksums...>checksum-8

you should get F9


2. Go to your modified pkg


Calculate you checksum the same way(if your lucky you will get F9)



3. now what do you have, is it higher or lower than F9

Lower- would be a number like 0A or 09(any number)

Higher- F8-A1


4. Now u need to add FF in the place of any 00 you can find(to find some search for 00 with hex selected, not text string)


if its Lower u need to add a little until it goes over into letters again which the first one would be F9


if it is Higher than you need to keep adding FF's until you get to numbers, then follow the steps for a lower Checksum


Video on this


[ame="https://www.youtube.com/watch?v=kjh78viPB48"]https://www.youtube.com/watch?v=kjh78viPB48[/ame]






+rep if you were on this step and i helped
(adsbygoogle = window.adsbygoogle || []).push({});

The following 12 users say thank you to shane1230 for this useful post:

daley174, Dunkus, gtav, IDontbreak, IIichigoII, iThenrik, LOL CAT, macattack1459, Mezzid, OllieIcon, TheMagicN, Vampytwistッ
07-08-2010, 09:39 PM #2
TheMagicN
Vault dweller
and then upload the patch trough proxy and we have modded lobbies?
07-08-2010, 09:42 PM #3
shane1230
Are you high?
Originally posted by TheMagicN View Post
and then upload the patch trough proxy and we have modded lobbies?


yes but also there is the header, so i am working on that now
07-08-2010, 09:44 PM #4
IDontbreak
Cake is a lie
Originally posted by shane1230 View Post
yes but also there is the header, so i am working on that now


Could you just explain what a header is?
07-08-2010, 09:48 PM #5
ITALIANmobsta
Bounty hunter
too bad that this file doesnt use checksu 8 and its way easier than u did it bro ill teach in private if u want [email][email protected][/email]
07-08-2010, 09:49 PM #6
Originally posted by shane1230 View Post
Ok so my inbox is being filled with "how to you get past the checksum"

Written Tut


1. Calculate the original PKG's checksum in HxD


Analysis>checksums...>checksum-8

you should get F9


2. Go to your modified pkg


Calculate you checksum the same way(if your lucky you will get F9)



3. now what do you have, is it higher or lower than F9

Lower- would be a number like 0A or 09(any number)

Higher- F8-A1


4. Now u need to add FF in the place of any 00 you can find(to find some search for 00 with hex selected, not text string)


if its Lower u need to add a little until it goes over into letters again which the first one would be F9


if it is Higher than you need to keep adding FF's until you get to numbers, then follow the steps for a lower Checksum


Video on this


You must login or register to view this content.






+rep if you were on this step and i helped




how did you manage to unpack and repack pkg file? i dont get michaels way, i installed yum on linux but dont know what to do after that, help please Smile
07-08-2010, 09:49 PM #7
shane1230
Are you high?
Originally posted by ITALIANmobsta View Post
too bad that this file doesnt use checksu 8 and its way easier than u did it bro ill teach in private if u want [email][email protected][/email]


lol r u sure, when yellowjagwa had his tut up, it said it had a checksum 8 so thats just what i was going by and i dont have msn, add me on ps3
07-08-2010, 09:52 PM #8
ITALIANmobsta
Bounty hunter
whats ur ps3
07-08-2010, 09:53 PM #9
shane1230
Are you high?
Originally posted by ITALIANmobsta View Post
whats ur ps3


x_ReCkILeSS_x
07-08-2010, 09:54 PM #10
GetDeleted -_-
- Former TACOTIME77 -
This won't work.

Copyright © 2026, NextGenUpdate.
All Rights Reserved.

Gray NextGenUpdate Logo