Hi,

Finally i've successfully integrate "August 11, 2020—KB4571729 (Monthly Rollup)" for Windows 7 (x64).

here's my phase (steps) :

 ...
 --- Build Information [BuildLabEx]. ---
 * Windows 7 Ultimate Build 7601.24559.amd64fre.win7sp1_ldr_escrow.200803-1924 [2020-08]
 ...
 --- Hotfix(s): 21 Hotfix(s) Installed. ---
 * [01]: KB2849697, [02]: KB2849696, [03]: KB2841134, [04]: KB2670838, [05]: KB2533623, [06]: KB2639308, [07]: KB2729094, [08]: KB2731771, [09]: KB2786081, [10]: KB2834140, [11]: KB2882822, [12]: KB2888049, [13]: KB3020369, [14]: KB3125574, [15]: KB3138612, [16]: KB4474419, [17]: KB4490628, [18]: KB4555449, [19]: KB4570673, [20]: KB4571687, [21]: KB4575903
 ...
 * Integrating ESU with BypassESU-v7-AiO Bug :
    *** an error occurred while attempting to start the servicing process for the image located at "Mounted directory" or [Error: 183].
 * Fix: used the same "DiSM Version" that used for "Mount-Wim" with "BypassESU-v7-AiO script".
   *** Example : i'd change "DiSM Version" in "BypassESU-v7-AiO script" with "DiSM v10.0.17763.1 (from Windows 10 v1809 RS5 build)" and it WORK !
   *** Adding command line below to "Wim-Integration.cmd" file...
   *** CODE :
       @setlocal DisableDelayedExpansion
       @echo off
       set dism10=D:\Programs\EX100\x64\HOME\SOFTWARE\x64\DiSM\dism.exe
   *** then replace command "dism.exe" with "%dism10%".
 ...
 Size After:
 #4: 4,53 GB (4.869.705.813 bytes) [#_WimLib_1.13.3-BETA1_x64_install.wim] [Elapsed Time : ± 61 MiNs - SingleTasking]
 #4: 2,47 GB (2.654.055.896 bytes) [#_WimLib_1.13.3-BETA1_x64_install.esd] [Elapsed Time : ± 85 MiNs - SingleTasking]
 Size Before:
 #0: 2,51 GB (2.700.177.790 bytes) [#_WimLib_1.13.3-BETA1_x64_install.wim]
 #0: 1,88 GB (2.024.610.976 bytes) [#_7600.16385.090713-1255_x64fre_client-Ultimate_en-us_DVD.esd]
 
Screenshot :

 ...
 
 ...
 --- SiMPLE CMD CODE : (you may change this any way you like...) ---
 ...
 CMD-CODE_PHASE-#1_Slipstreaming Service Pack 1 Update for Windows 7 (KB976932) : http://controlc.com/f3aa0a98
 
Screenshot :

 ...
 CMD-CODE_PHASE-#2_Integrating Convenience Rollup Update for Windows 7 (KB3125574) : http://controlc.com/3b96f5af
 
Screenshot :

 ...
 CMD-CODE_PHASE-#3_Integrating Prerequisite for Extended Security Updates (ESU) : http://controlc.com/eced9313
 
Screenshot :

 ...
 CMD-CODE_PHASE-#4_Integrating 2020-08 Security Monthly Quality Rollup Updates (KB4571729) : http://controlc.com/8a9533ea
 
Screenshot :

 ...
 
 ...
 --- PHASE #5 ---
 --- Slimmingdown with EX-70 - v1.6.1.0 (x86) final size ---
 #5: 915 MB (960.341.144 bytes) [#_EX-70.v1.6.1.0.x86_install.wim] [Elapsed Time : ± 316 MiNs - SingleTasking]
 #5: 551 MB (578.285.758 bytes) [#_EX-70.v1.6.1.0.x86_install.esd] [Elapsed Time : ±  19 MiNs - SingleTasking]
 
Screenshot :

 ...
 NOTE:
 ...
 * "Slimmingdown with EX-70 - v1.6.1.0 seem take very long time to completed (more than 5 hour)", it more faster with v1.7.5.0 or v1.8.8.0 but get Missing "Accessories - Sticky Notes" Shortcut and Windows Search Broken or "Presets - Protect Windows Search" Not Work ?.
 * Keep "Accessories - Windows Recovery Environment" (incase Windows Crashed beed to be repaired), but DELETE "winRE.wim" file MANUALLY ("path:\EX70\WORK\MOUNT\TEMP_Windows\Windows\System32\Recovery\winRE.wim").
 ...
 --- Hotfix(s): 22 Hotfix(s) Installed. ---
 * [01]: KB2849697, [02]: KB2849696, [03]: KB2841134, [04]: KB2670838, [05]: KB2533623, [06]: KB2639308, [07]: KB2729094, [08]: KB2731771, [09]: KB2786081, [10]: KB2834140, [11]: KB2882822, [12]: KB2888049, [13]: KB3020369, [14]: KB3125574, [15]: KB3138612, [16]: KB4474419, [17]: KB4490628, [18]: KB4528069, [19]: KB4555449, [20]: KB4570673, [21]: KB4571687, [22]: KB4575903
 * [+] KB4528069 - DiFF Hotfix(s) Installed.
 ...
 [Useful Link]:
 » WinReducerEX70_2020.8.26-2.45.27_v1.8.8.0.x86.wccf.7z : https://mega.nz/file/GpUwRSSS#-8LypEzQVSKitrRFbS7Q5N1TmSE7-cYRRAzWO__OVno
 » WinReducerEX70_2020.8.27-2.29.48_v1.7.5.0.x86.wccf.7z : https://mega.nz/file/ntUkVCwQ#VSqfxVc6jisDyJDPXWLsjdqiASiH0Fflfz6zXGBPyvw
 » WinReducerEX70_2020.8.27-15.52.45_v1.6.1.0.x86.wccf.7z : https://mega.nz/file/akdGjKBT#a3qOuTGDyPLkNNoe_bpHodRKn4g9-_BKwvgsebRlLM8
 » Bypass Windows 7 Extended Security Updates Eligibility : https://forums.mydigitallife.net/threads/bypass-windows-7-extended-security-updates-eligibility.80606/
 ...

hope this helps,

cheers Smile

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 pS : Creative Learning by Doing, Slowly but Do iT Cool's