Hi Steve, the install images (i.e. https://cdimage.debian.org/debian-cd/current/arm64/iso-cd/debian-10.10.0-arm64-netinst.iso) are outdated too. I hit the bug after upgrading, and tried to install it fresh - but got the same error :-).
Arne Am Montag, dem 21.06.2021 um 16:10 +0100 schrieb Steve McIntyre: > Hi again, > > On Mon, Jun 21, 2021 at 10:46:53AM +0100, Steve McIntyre wrote: > > > > In testing of the 10.10. point release over the weekend, we found a > > significant problem with shim-signed on arm64. > > ... > > > I'm working on a more user-friendly fix now, and I hope to push it > > out > > via the buster-updates archive shortly. This will still not be > > *working* Secure Boot for arm64, as we're still awaiting better > > toolchain support to make that work. > > We've now released an update for shim-signed which should solve this > problem: > > > https://lists.debian.org/debian-stable-announce/2021/06/msg00001.html > > Apologies for any hassle caused. :-( >