Hi folks,
Been trying to install biab 2022 ultra pack to a 2tb external usb drive. Don't want to use up all my space on my internal drive which is 560gb. Downloaded files ok all be it very slowly apart from RT 329-400 which all failed. My machine is an imac24" M1 chip 8gb ram. Last years model bought direct from Apple uk 3 weeks ago. Been using biab for windows for about 12 years, but I've given up on windows in favour of mac.

MY bb SPEED is around 1gbps download so that's pretty fast.
I HAVE given full disk access to the install manager.
This is the error I get

Install error (code 10). Installer could not access the installer package. Either the file does not exist, is corrupt or the wrong file type, or access was denied by macOS. If the correct file does exist, try going to Security & Privacy --> Full Disk Access, and remove then re-add the Install Manager app. Or, download files to a location other than Downloads, Documents, or Removable Volumes; these locations require specific TCC privileges.