Springe zum Inhalt

Veröffentlicht am

If booting into the factory reset menu with <Volume up> and <Power on> fails, an alternative way is to switch partition slots via fastboot command.

First boot into the fastboot menu with <Volume down> and <Power on>: press first <Power down> and hold the key, the power on the device and hold the key, until the menu appears. Release both keys. The first screen should have the title fastboot.

In fast boot mode (even if the device is locked), you are able to use fastboot commands via USB (Android Command Line Tools or the Android SDK must be installed and the platform-tools folder must be in the path).

First you have to identify the active slot:

fastboot getvar current-slot

After the slot (a orb) is known, just switch to the opposite slot (if a is active, switch to b and vice-versa).

fastboot --set-active=a or b

Then reboot the system using:

fastboot reboot

After the reboot, you should be in the factory reset menu. Select the option to erase the data/cache partition. After approval and and a reboot, you should be able to setup the device from scratch.

Note: after a factory reset via boot menu, it is necessary to enter the last used Google account information (FRP protection). If the account information is lost, only the device vendor can reset the account information (separate partition) - a network connection is required - maybe this is a paid service or it is not possible at all (i.e. after the expiration of the warranty.

Veröffentlicht am

With ImapSync from Gilles Lamiral it is easy to migrate or backup IMAP accounts between to servers; the command-line tool uses the Internet Mail Protocol 4 (IMAP 4). It is perfect to migrate from one mail or hosting provider to another or to use two IMAP based mailboxes as backup solution.

ImapSync supports incremental, duplicate free transfers. It also supports recursion to transfer complete mail folder trees.

Note: The tool transfers data beween two servers, but neither supports local backups (or restoration) nor bidirectional synchronisation, like offlineimap or mbsync. It also does not support groupware features, i.e. backing up calendars, contacts, or tasks.

Install dependencies:

sudo apt update && apt upgrade && apt install  \
libauthen-ntlm-perl     \
libclass-load-perl      \
libcrypt-openssl-rsa-perl \
libcrypt-ssleay-perl    \
libdata-uniqid-perl     \
libdigest-hmac-perl     \
libdist-checkconflicts-perl \
libencode-imaputf7-perl     \
libfile-copy-recursive-perl \
libfile-tail-perl       \
libio-compress-perl     \
libio-socket-inet6-perl \
libio-socket-ssl-perl   \
libio-tee-perl          \
libjson-webtoken-perl   \
libmail-imapclient-perl \
libmodule-scandeps-perl \
libnet-dbus-perl        \
libnet-ssleay-perl      \
libpar-packer-perl      \
libproc-processtable-perl \
libreadonly-perl        \
libregexp-common-perl   \
libsys-meminfo-perl     \
libterm-readkey-perl    \
libtest-fatal-perl      \
libtest-mock-guard-perl \
libtest-mockobject-perl \
libtest-pod-perl        \
libtest-requires-perl   \
libtest-simple-perl     \
libunicode-string-perl  \
liburi-perl             \
libtest-nowarnings-perl \
libtest-deep-perl       \
libtest-warn-perl       \
make                    \
time                    \
cpanminus

Get and install umapsync

Downloads the latest build on Github to the current directory, adds execution permission, and moves it to /usr/bin:

wget -N https://raw.githubusercontent.com/imapsync/imapsync/master/imapsync
chmod +x imapsync
mv imapsync /usr/bin/

Run imapsync

imapsync

To check for the latest release and library dependencies, add the --releasecheck parameter:

imapsync --releasecheck

Example: Incremental backup between two distinct IMAP servers:

USR1='[email protected]'
PWD1='somepassword1'
USR2='[email protected]'
PWD2='somepassword2'
imapsync --releasecheck --addheader --automap --prefix1 "INBOX." --prefix2 "INBOX/" --no-modulesversion --host1 mail.giesecke.org --user1 $USR1 --password1 $PWD1 --host2 backup.giesecke.org --user2 $USR2 --password2 $PWD2

Note that imapsync could create a log directory in the current working directory (pwd).