### Initial install

Attention: this only applies to builds of Android 12
for older builds see folder https://dl.omnirom.org/tmp/rpi4/legacy

If you setup a new system there are two steps you need to do

1) a recovery image
https://dl.omnirom.org/tmp/rpi4/omni-rpi4-recovery.img.zip

2) a recovery flashable zip of the build you want to install eg
https://dl.omnirom.org/tmp/rpi4/omni-12-<date>-<type>.zip

Step 1 - flashing TWP 
-unzip recovery image downloaded from 1 and flash to your new system storage device (SD or USB)
-boot from that storage device into TWRP
-resize userdata by running install -> up one level -> resize_userdata.zip

Step 2 - flashing build with TWRP
-copy recovery flashable zip downloaded from 2 to another USB stick
-insert USB stick and flash by running install -> select storage -> select USB stick
-after flash is done -> reboot system

If you dont have a second USB stick you can also copy the recovery flashable zip
to your storage device after resizing userdata from step 1 eg with adb

### Updates

Attention: if you run a build BEFORE 20220407 you can not
use this way out of the box.

Better create a backup using TWRP on an external USB stick and
follow the steps above to setup a new system and then restore
your backup

If you think you are too smart to follow this simple advice
you can also extract the contents of the boot partition of 1)
and copy it to your current storage device. Then reboot to
recovery and continue with step 2

### OTA updates

Open app Control Center -> System updates
-> Check - if new build is available
-> Download - recovery flashable zip will be stored in internal storage /sdcard/OpenDelta
-> Flash - device will reboot into TWRP flash the update and will reboot back into the ROM

Optional you can set automatic checks to get notified for new builds

### manual TWRP updates

Download recovery flashable zip of the build from 2 and either copy to
external USB stick or to internal storage in /sdcard/OpenDelta using adb
Follow step 2 above from initial install