Debian12: Can not Update
Posted: Wed Apr 01, 2026 7:22 pm
I have a new NanoPi Zero2, and need to install Debian 12 (Not Debian 13 as currently available from https://drive.google.com/drive/folders/ ... nZPx6PbMEL)
How can I proceed?
- Install 64GB eMMC
- Insert SD card with Multiple OS (I download this from FriendlyElec site about 6 months ago when Debian 12 was latest supported)
- VNC to Zero2
- Click Debian12 install
- Select DISABLE OVERLAY FILE SYSTEM
- Success
- Reboot with no SD card
- SSH to nanopi-zero2.lan
- Login as root
- Issue apt update
- Errors. See below
How can I proceed?
Code: Select all
root@NanoPi-Zero2:~# apt update
Get:1 https://mirrors.aliyun.com/debian bookworm InRelease [151 kB]
Get:2 https://mirrors.aliyun.com/debian bookworm-backports InRelease [59.4 kB]
Err:1 https://mirrors.aliyun.com/debian bookworm InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6ED0E7B82643E131 NO_PUBKEY 78DBA3BC47EF2265 NO_PUBKEY F8D2585B8783D481
Err:2 https://mirrors.aliyun.com/debian bookworm-backports InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6ED0E7B82643E131 NO_PUBKEY 78DBA3BC47EF2265
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://mirrors.aliyun.com/debian bookworm InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6ED0E7B82643E131 NO_PUBKEY 78DBA3BC47EF2265 NO_PUBKEY F8D2585B8783D481
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://mirrors.aliyun.com/debian bookworm-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6ED0E7B82643E131 NO_PUBKEY 78DBA3BC47EF2265
W: Failed to fetch https://mirrors.aliyun.com/debian/dists/bookworm/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6ED0E7B82643E131 NO_PUBKEY 78DBA3BC47EF2265 NO_PUBKEY F8D2585B8783D481
W: Failed to fetch https://mirrors.aliyun.com/debian/dists/bookworm-backports/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6ED0E7B82643E131 NO_PUBKEY 78DBA3BC47EF2265
W: Some index files failed to download. They have been ignored, or old ones used instead.
N: Repository 'Debian bookworm' changed its 'non-free component' value from 'non-free' to 'non-free non-free-firmware'
N: More information about this can be found online in the Release notes at: https://www.debian.org/releases/bookworm/arm64/release-notes/ch-information.html#non-free-split