The Installer information on the recovery server is damaged.

I had this issue just yesterday. What you need to do is shut down you mac and press the power button to and hold down Option + Cmd + r together until you get the network screen, enter your network details. When you've got to macOS utilities select install macOS and that will now let you install macOS Catalina rather than anything older. I hope that helps.

After reboot with shift I have a flashing sign of the the folder and nothing happens

yes, but I can't restore to High Sierra. It is written that The Installer information on the recovery server is damaged.

I'm having the same issue - I earsed the drive and formated it to Extended (Journled).

I still encounter the same error.

Any idea what can be the solution?

This did the trick for me. Many thanks!

1. Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following combinations on your keyboard. Command-R is generally recommended, especially if you never installed macOS Sierra 10.12.4 or later.

Command (⌘)-R

Install the latest macOS that was installed on your Mac.

Option-⌘-R

Upgrade to the latest macOS compatible with your Mac.

Shift-Option-⌘-R

Install the macOS that came with your Mac, or the closest version still available.

2. Decide whether to erase (format) your disk

If you need to erase your disk before installing macOS, select Disk Utility from the Utilities window, then click Continue. You probably don't need to erase, unless you're selling or giving away your Mac or have an issue that requires you to erase. Learn more about when and how to erase.

3. Install macOS

After starting up from macOS Recovery, follow these steps to install macOS:

1 Choose Reinstall macOS (or Reinstall OS X) from the Utilities window.

2 Click Continue, then follow the onscreen instructions to choose your disk and begin installation.

3 If the installer asks to unlock your disk, enter the password you use to log in to your Mac. If it doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk. 

1 Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

If your Mac restarts to a setup assistant, but you're selling or giving it away, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.



If you never installed macOS Sierra 10.12.4

If macOS Sierra 10.12.4 or later was never installed on your Mac, macOS Recovery works differently:

• Command-R is still the recommended way to start up from macOS Recovery. This combination makes sure that the installation isn't associated with your Apple ID, which is important if you're selling or giving away your Mac.

• Option-Command-R installs the macOS that came with your Mac, or the closest version still available.

• Shift-Option-Command-R isn't available.

https://support.apple.com/en-us/HT204904

the installer information on the recovery server is damaged ..?

how i can reinstal..?

i has all the same issues. I did the option command R restart and simply changed the network to thunderbolt 1 and it finally prompted me to install! I did it by luck. Complete accident but Catalina I stalled. Previously when I just held command R it tried to install Sierra and I kept getting error messages.

I am having this same issue. How do I reformat the disc if it won’t even let me run first aid?

I am facing the same issue. First, I had formatted the disk and then tried to install the macOS.

Have anyone fixed this issue?

are you psbaik? if yes:

You cannot go back to Sierra: HighSierra and Mojave have a different format of he disk compared to Sierra: APFS instead of HFS+ in macos older than Mojave.

The only way would be to reformat your disk first.

You have to download Sierra here:

https://themacgo.com/macdownload/

this downloads a Sierra dmg file. after installing you have to update Sierra, to the latest Sierra-

Avoid all other downloads on that website, because they serve at nothing and you are easily making a mistake there.

Lots of people seeing that, try it in Safe Mode...

Safe Boot from the HD, (holding Shift key down at startup), does the problem occur in Safe Mode?

Are you booting from the Restore Partition? CMD+r keys on startup?

I had the idea that the question was to reinstall Sierra, not Catalina.

Avoid Catalina!