After the command apt-get update I receive the following:
Then, in the etc/hosts registered
but it did not help.
Please help in solving the problem.

How about reading the thread???

There is no solution to the GPG errors because the key of the Nokia has expired as the message states. That is bad and insecure, but there is nothing we could do about it.

There is no need to map repository.maemo.org in /etc/hosts any more.

Please redo the changes and post the output of

BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso31+0cssu0) built-in shell (ash)
Enter 'help' for a list of built-in commands.

~ $ sudo gainroot
Root shell enabled


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso31+0cssu0) built-in shell (ash)
Enter 'help' for a list of built-in commands.

/home/user # apt-get update
Get:1 https://downloads.maemo.nokia.com ./ Release.gpg [198B]
Hit http://repository.maemo.org fremantle Release.gpg
Ign http://repository.maemo.org fremantle/free Translation-ru
Ign https://downloads.maemo.nokia.com ./ Translation-ru
Ign http://repository.maemo.org fremantle/non-free Translation-ru
Hit http://repository.maemo.org fremantle Release.gpg
Ign http://repository.maemo.org fremantle/free Translation-ru
Ign http://repository.maemo.org fremantle/non-free Translation-ru
Get:2 https://downloads.maemo.nokia.com ./ Release.gpg [198B]
Hit http://maemo.merlin1991.at fremantle Release.gpg
Ign https://downloads.maemo.nokia.com ./ Translation-ru
Ign http://maemo.merlin1991.at fremantle/free Translation-ru
Ign http://maemo.merlin1991.at fremantle/non-free Translation-ru
Hit http://repository.maemo.org fremantle-1.3 Release.gpg
Ign http://repository.maemo.org fremantle-1.3/free Translation-ru
Ign http://repository.maemo.org fremantle-1.3/non-free Translation-ru
Hit http://repository.maemo.org fremantle Release.gpg
Ign http://repository.maemo.org fremantle/free Translation-ru
Ign http://repository.maemo.org fremantle/non-free Translation-ru
Get:3 https://downloads.maemo.nokia.com ./ Release.gpg [198B]
Hit http://repository.maemo.org fremantle Release.gpg
Ign http://repository.maemo.org fremantle/free Translation-ru
Ign http://repository.maemo.org fremantle/non-free Translation-ru
Hit http://repository.maemo.org fremantle Release
Hit http://repository.maemo.org fremantle Release
Hit http://maemo.merlin1991.at fremantle Release
Ign https://downloads.maemo.nokia.com ./ Translation-ru
Hit http://repository.maemo.org fremantle-1.3 Release
Hit http://repository.maemo.org fremantle Release
Hit http://repository.maemo.org fremantle Release
Hit https://downloads.maemo.nokia.com ./ Release
Hit https://downloads.maemo.nokia.com ./ Release
Hit https://downloads.maemo.nokia.com ./ Release
Get:4 https://downloads.maemo.nokia.com ./ Release [507B]
Get:5 https://downloads.maemo.nokia.com ./ Release [507B]
Ign https://downloads.maemo.nokia.com ./ Release
Get:6 https://downloads.maemo.nokia.com ./ Release [507B]
Ign https://downloads.maemo.nokia.com ./ Release
Ign https://downloads.maemo.nokia.com ./ Release
Ign https://downloads.maemo.nokia.com ./ Packages/DiffIndex
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Ign https://downloads.maemo.nokia.com ./ Packages/DiffIndex
Ign https://downloads.maemo.nokia.com ./ Packages/DiffIndex
Hit https://downloads.maemo.nokia.com ./ Packages
Hit https://downloads.maemo.nokia.com ./ Packages
Hit https://downloads.maemo.nokia.com ./ Packages
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Ign http://maemo.merlin1991.at fremantle/free Packages/DiffIndex
Ign http://maemo.merlin1991.at fremantle/non-free Packages/DiffIndex
Ign http://repository.maemo.org fremantle-1.3/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle-1.3/non-free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/free Packages/DiffIndex
Ign http://repository.maemo.org fremantle/non-free Packages/DiffIndex
Hit http://repository.maemo.org fremantle/free Packages
Hit http://repository.maemo.org fremantle/non-free Packages
Hit http://repository.maemo.org fremantle/free Packages
Hit http://repository.maemo.org fremantle/non-free Packages
Hit http://maemo.merlin1991.at fremantle/free Packages
Hit http://maemo.merlin1991.at fremantle/non-free Packages
Hit http://repository.maemo.org fremantle-1.3/free Packages
Hit http://repository.maemo.org fremantle-1.3/non-free Packages
Hit http://repository.maemo.org fremantle/free Packages
Hit http://repository.maemo.org fremantle/non-free Packages
Hit http://repository.maemo.org fremantle/free Packages
Hit http://repository.maemo.org fremantle/non-free Packages
Fetched 2115B in 19s (106B/s)
Reading package lists... Done
W: GPG error: https://downloads.maemo.nokia.com ./ Release: The following signatures were invalid: KEYEXPIRED 1349249546 KEYEXPIRED 1349249546 KEYEXPIRED 1349249546
W: GPG error: https://downloads.maemo.nokia.com ./ Release: The following signatures were invalid: KEYEXPIRED 1349249546 KEYEXPIRED 1349249546 KEYEXPIRED 1349249546
W: GPG error: https://downloads.maemo.nokia.com ./ Release: The following signatures were invalid: KEYEXPIRED 1349249546 KEYEXPIRED 1349249546 KEYEXPIRED 1349249546
W: You may want to run apt-get update to correct these problems
/home/user #

That is the output that everybody gets since Nokia abandoned the N900 and did not renew the expiring repository key. Please note that this is no error for apt-get, but only a Warning about the gpg error.
Just go on like normal.

Ehe, cant go on.

I had to re-flash my phone N900 (tested extras-devel repo, and the filesystem became corrupt or read-only, by who knows what. Its another story).

I had a backup (that also contained the program-list).

BUT.. bunch of packages are missing (like "maemo-applet-tvout", "minignumeric", "gftp-gtk", "less", "x48", "locate"), others have broken dependency (as the "PyQt4 Demo")

Also the site garage.maemo.org have also expired. Why it was shttp in the first place, i have no clew on. Is repo shut down, or is it just the encryption pgp/gpg key?

UHG <- ms pacman

Pls kindly help me, I have the same problem but there's a broken apllication on my phone called maeflight that has refused uninstallation after several attempts. I can't use filebox or cuteexplorer as they won't open.
Below is the the result of some of the commands you gave on this thread:

BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

~ $ root


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

Nokia-N900-02-8:~# apt-get clean
Nokia-N900-02-8:~# apt-cache policy multi-boot* u-boot*
W: Unable to locate package multi-boot*
W: Unable to locate package u-boot*
Nokia-N900-02-8:~# apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
2 not fully installed or removed.
After this operation, 0B of additional disk space will be used.
Setting up maeflight (5.1.3-1) ...
dpkg (subprocess): unable to execute post-installation script: Exec format error
dpkg: error processing maeflight (--configure):
subprocess post-installation script returned error exit status 2
Setting up nitdroid-kernel-2.6.28-07 (6-rc6) ...
Android not mounted on '/and'. Can't do anything
dpkg: error processing nitdroid-kernel-2.6.28-07 (--configure):
subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
maeflight
nitdroid-kernel-2.6.28-07
E: Sub-process /usr/bin/dpkg returned an error code (1)
Nokia-N900-02-8:~# apt-get install kernel-power kernel-power modules kernel-power-flasher
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package modules
Nokia-N900-02-8:~#

thanks

First please ake sure to get rid of all of the typos and the regular expression will give you the installed packages fro the 'multiboot' and 'u-boot' search terms. Note please the pipe-symbol after dpkg -l (small L) is accessible via <Blue arrow><Sym> on the Keyboard

To get rid of nitdroid-kernel you have to mount the partition you were installing nitdroid to, to the mount point, aka. folder, /and.

For maeflight's postinst script to work you might need to install wgetPlease feel free to ask for clarification, if you are still unsure about terminal output

wow! I'm so happy to get a reply from you now i am sure my problem will be solved.
First, i don't think I have neither multi-boot nor u boot installed cos it was only nitdroid kernel that was not fully installed before I stopped it due to a bad intenet connection. I typed the first set of code above but it brought no result. When i typed the second command, below is what I got


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

~ $ root


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

Nokia-N900-02-8:~# apt-get wget maeflight
E: Invalid operation wget
Nokia-N900-02-8:~# apt-get install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0B of additional disk space will be used.
Setting up maeflight (5.1.3-1) ...
dpkg (subprocess): unable to execute post-installation script: Exec format error
dpkg: error processing maeflight (--configure):
subprocess post-installation script returned error exit status 2
Setting up nitdroid-kernel-2.6.28-07 (6-rc6) ...
Android not mounted on '/and'. Can't do anything
dpkg: error processing nitdroid-kernel-2.6.28-07 (--configure):
subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
maeflight
nitdroid-kernel-2.6.28-07
E: Sub-process /usr/bin/dpkg returned an error code (1)
Nokia-N900-02-8:~#
In addition, i can't access the folders as applications like cuteexplorer, filebox stopped working even after I uninstalled and re-installed. I even used 'clear device' option but all to no avail. As it is now, there are many applications on my phone that have stopped working while I have both maeflight and nitdroid kernel in the HAM. The kernel's status is that 'it is broken but updateable and has no option to uninstall. For maeflight, when I try to uninstall it, the application manager shuts down abruptly. I'll be glad to hear from you asap. I believe you can help me fix the problem. Thanks

First:
Well, those typos...
Please try the commands again:Second: Before you would install nitdroid-kernel you would extract the compressed file system in any of those howtos around, the stuff must be somewhere on your device, probably /home. So please show the output of these commandsFor your software issues you might consider backing up and flash the device completely.

here's the result of the first command