I've been trying for a while now to install e(fx)clipse 3.8.0 in Eclipse, but whenever it gets to the half of installation 53% it shows me this error:
An error occurred during the org.eclipse.equinox.internal.p2.engine.phases.CheckTrust phase.
session context was:(profile=C__Users_xx_eclipse_java-2022-06_eclipse, phase=org.eclipse.equinox.internal.p2.engine.phases.CheckTrust, operand=, action=).
Error reading signed content.
invalid entry CRC (expected 0x29926101 but got 0x837847bf)
Is there any way to fix it? I tried different solutions, even uninstalled and downloaded again Eclipse but it's not working.

This looks like a bug of Eclipse Equinox p2 in the new feature of signing with PGP. If you can reproduce it with a fresh installation of the Eclipse IDE for Java Developers download from here (it might also be caused by using an outdated version of the Eclipse Installer), please report it here with the error log (in Window > Show Views > Error Log, select the related item, hit Ctrl+C and paste it into the issue description).
As a workaround, in the preferences Install/Update > Trust enable Trust all content.