[solved] pacman not working, every server returns 404

[beaglebonerArch]

Hello,
I'm using Arch for some time on desktop and now wanted to try it on my Beaglebone Black.
I managed to install it, but when i want to update using pacman I get this error:
$this->bbcode_second_pass_code('', '
[root@alarm alarm]# pacman -Syu
:: Synchronizing package databases...
error: failed retrieving file 'core.db' from mirrors.ustc.edu.cn : The requested URL returned error: 404
error: failed retrieving file 'core.db' from mirrors.kernel.org : The requested URL returned error: 404
error: failed retrieving file 'core.db' from mirrors.ocf.berkeley.edu : The requested URL returned error: 404
error: failed retrieving file 'core.db' from mirror.lty.me : The requested URL returned error: 404
error: failed retrieving file 'core.db' from arch.localmsp.org : The requested URL returned error: 404
error: failed retrieving file 'core.db' from mirror.kku.ac.th : The requested URL returned error: 404
...')

The list goes on and on. It is also the same when I try to install something:
$this->bbcode_second_pass_code('', '[root@alarm alarm]# pacman -S vim
resolving dependencies...
looking for conflicting packages...

Packages (3) gpm-1.20.7-7 vim-runtime-8.0.0237-1 vim-8.0.0237-1

Total Download Size: 6.13 MiB
Total Installed Size: 29.19 MiB

:: Proceed with installation? [Y/n]
:: Retrieving packages...
error: failed retrieving file 'vim-runtime-8.0.0237-1-armv7h.pkg.tar.xz' from mirrors.ustc.edu.cn : The requested URL returned error: 404
error: failed retrieving file 'vim-runtime-8.0.0237-1-armv7h.pkg.tar.xz' from mirrors.kernel.org : The requested URL returned error: 404
error: failed retrieving file 'vim-runtime-8.0.0237-1-armv7h.pkg.tar.xz' from mirrors.ocf.berkeley.edu : The requested URL returned error: 404
error: failed retrieving file 'vim-runtime-8.0.0237-1-armv7h.pkg.tar.xz' from mirror.lty.me : The requested URL returned error: 404
')

How can i fix this, or add the repository for my architecture?

Thanks

PS: It's hard to find tutorials or beginner's guides for archlinuxarm, could you point me to a few relevant websites?

[WarheadsSE]

Those aren't ALARM mirrors.

Did you use `reflector`? That only works with the Arch Linux mirrors (we're not the same project!)

[beaglebonerArch]

Oh yes, you are right. I made the silly mistake of using the same mirrors as for my desktop.

In case somebody has the same problem use the mirrorlist that comes with the archlinuxarm files, those contain mirrors that give you the binaries for ARM architecture.

Thank you