Cannot Downgrade EFT - Failed to decode file delta with the Patcher

When I try to install SPT-AKI, I get to the part where the patcher is running, then mid downgrade the patcher closes automatically and the installer reads, "A patch failed to apply." I have tried reinstalling the live build of EFT twice, changing the app I use for zip folders (WinRAR to 7zip), and manually installing AKI. None of the options I have tried worked. I have installed AKI hundreds of times by now, even on the same PC, and this is the first time I have ever had this problem.

Quote from chomp

Try uninstalling your live EFT files, make sure the folder has been deleted and no live files remain. Download the game again.

Start the game up till you see the main menu. exit.

Use the SPT installer again in an empty folder.

Sorry it took so long to reply, it took me about 20 or so hours to even get back into my EFT account to reinstall live, but it did not work. I uninstalled the game, the launcher itself and the appdata folder, it gave me the same error when I ran the installer.

Quote from Hacker228

Hi Delete everything from the game directory, close BSG Launcher and download the required version from link from the official EFT developers discord server http://cdn-11.eft-store.com/cl…Client.0.13.1.3.25206.zip (BSG Discord link). Unzip the archive into the game folder and install SPT 3.6.1 from here https://dev.sp-tarkov.com/SPT-…leases/releases/tag/3.6.1.

As far as this workaround goes, the link for the client download leads me to a 404. It also does that when I go through the link provided through discord as well.

Quote from Hacker228

Oh, I'm sorry. A few days ago this version was available. You can try installing SPT 3.7.0. It is stable and most popular mods work, but I advise you to make a backup of your profile in eft folder/user/profiles

No worries at all! Thank you for the help! I was able to get SPT 3.7.0 working but mods were not available at that time. I'll definitely just stick to that for now though. Thank you again!