My methods using NSIS from running any Custom FreeArc SFX files... (file extension its custom. Likely *.sfxdat or any names. No EXE extensions.)
Code:
nsExec::ExecToLog '"$EXEDIR\SetupFiles\bigdata.sfxdat" -y -s2 -d"$INSTDIR"'
Use external compressors?
Variant 1: Put more external decompressors/cls-dll's put to located in any SFX exe file dirs. (ex: "SetupFiles\cls-msc.dll" ...)
Variant 2: Make ONE biggest SFX file, injecting with more external decompressors/dll's using Enigma Virtual Box tools.
Questions: How to increasing using bigger internal BMP files?? (LOGO.bmp on has 388*228px size. Likely bigger size. 104.bmp on has 93*301px size.) And modifyng Progress Bar in Win7 stye? Color changes? No skippeable with ESC buttons and more.. Fully recompiling the making custom SFX stub from source codes?
UPDATE: Checked the Sulfurum1989 posted sfx file, use different sized images, checking and comparing now then original "Freearc.sfx" file. In last Resource Hacker 5.1.7 x86, don't work from compiling, translating the SFX file. In older ~10-12 years ago times use any older version Reshacker its solvely working editing issues. Created many (and translated) variants these SFX modules, sourced from original "Freearc.sfx" and "Freearc-installer-nodelete.sfx" files, with or without visible in last extracted files and progressbar.
Questions part2: More FreeArc SFX modules, not supporting running any file, after extraction process?? (ex: WinRAR SFX, 7zSFX packages and more...)