//edit: You need a rooted device for this kind of flashing
Hi, ever wondered about how you can flash a recovery.img via adb shell?
A lot of posts suggest flashing it via fastboot. Well my Samsung phone is not detected by fastboot. Then there is the option to install a dubious binary file which is called flash_image.. thank u internet!
Well damn I have the recover.img whats so hard to use dd and flash it with a single shell command? For those who don't know much about linux commands here we go;
Enable your USB debugging bridge in switch via adb to the terminal:
./adb shell
Then you should be able to find your recovery partion with:
DEV=$(ls /dev/block/platform/*/by-name/recovery); echo $DEV
that should output something like this:
/dev/block/platform/7824900.sdhci/by-name/recovery
If this is the case you only have to put the recovery.img on your sd-card or the internal storage and you are one command from flashing:
dd of=$DEV if=/external_sd/recovery.img
Thats it! No binaries you have to install. No fastboot udev rules :S
You can enter into your new recovery system with:
./adb reboot recovery
\m/