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MW3 Downgrade and Update Prevention Guide

Scheduled Pinned Locked Moved MW3 Client Support
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  • Delta_1453 Offline
    Delta_1453 Offline
    Delta_1453
    wrote last edited by
    #4
    This post is deleted!
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    • espresso8031 Offline
      espresso8031 Offline
      espresso8031
      wrote last edited by
      #5

      If anybody runs into some script errors in private mp matches like I did, using different manifests solved it for me

      download_depot 42680 42682 2661317971072643596 
      download_depot 42680 42683 1595601894688570808 
      download_depot 42680 42681 5651167211650965131 
      download_depot 42690 42691 4104640605720756125 
      

      please remember to clear your plutonium iw5 cache.

      All credit goes to discord users Fry and Raine! Hope this helps someone.

      SkUlLcRaCkErgd 5persondude 2 Replies Last reply
      3
      • blitzou Offline
        blitzou Offline
        blitzou
        wrote last edited by blitzou
        #6

        Life saver as well! Thanks for the detailed tutorial. Now facing the same problem like this ticket to launch on a private game : https://forum.plutonium.pw/topic/46474/anyone-able-to-assist-please

        Vipadus 1 Reply Last reply
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        • candy2 Offline
          candy2 Offline
          candy2
          wrote last edited by
          #7
          This post is deleted!
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          • blitzou blitzou referenced this topic
          • blitzou blitzou

            Life saver as well! Thanks for the detailed tutorial. Now facing the same problem like this ticket to launch on a private game : https://forum.plutonium.pw/topic/46474/anyone-able-to-assist-please

            Vipadus Offline
            Vipadus Offline
            Vipadus
            wrote last edited by
            #8

            blitzou Check the post by espresso8031 right above yours. I had the exact same error and all I did was uninstall MW3 and Plutonium, then redid the downgrade process except with those depot files.

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            • Grubs.gg Grubs.gg referenced this topic
            • Benson774 Offline
              Benson774 Offline
              Benson774
              wrote last edited by
              #9

              was able to download the first two but not the third (42751)
              Screenshot 2026-09-10 160637.png

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              • Benson774 Offline
                Benson774 Offline
                Benson774
                wrote last edited by
                #10

                update: Grok made me swap 42751 with 42750 and apparently it worked. then i followed the rest of the procedure and now i can play MW3 (it wouldn't run before the downgrade)
                Screenshot 2026-09-10 162223.png

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                • espresso8031 espresso8031

                  If anybody runs into some script errors in private mp matches like I did, using different manifests solved it for me

                  download_depot 42680 42682 2661317971072643596 
                  download_depot 42680 42683 1595601894688570808 
                  download_depot 42680 42681 5651167211650965131 
                  download_depot 42690 42691 4104640605720756125 
                  

                  please remember to clear your plutonium iw5 cache.

                  All credit goes to discord users Fry and Raine! Hope this helps someone.

                  SkUlLcRaCkErgd Offline
                  SkUlLcRaCkErgd Offline
                  SkUlLcRaCkErgd
                  wrote last edited by
                  #11

                  espresso8031 do I install these with the ones above or just the four in your comment?

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                  • 5persondude Offline
                    5persondude Offline
                    5persondude
                    wrote last edited by
                    #12
                    This post is deleted!
                    1 Reply Last reply
                    0
                    • espresso8031 espresso8031

                      If anybody runs into some script errors in private mp matches like I did, using different manifests solved it for me

                      download_depot 42680 42682 2661317971072643596 
                      download_depot 42680 42683 1595601894688570808 
                      download_depot 42680 42681 5651167211650965131 
                      download_depot 42690 42691 4104640605720756125 
                      

                      please remember to clear your plutonium iw5 cache.

                      All credit goes to discord users Fry and Raine! Hope this helps someone.

                      5persondude Offline
                      5persondude Offline
                      5persondude
                      wrote last edited by
                      #13

                      espresso8031 Here are the DLCs for people that own them:

                      DLC1: download_depot 42690 42695 9005316271397236436
                      DLC2: download_depot 42690 42696 2478272765185873756
                      DLC3: download_depot 42690 42697 5810618727794750362
                      DLC4: download_depot 42690 42698 5997898371746217629
                      
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                      • DirkRockface DirkRockface referenced this topic

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