'Flashing' Jolla recovery image

'Flashing' Jolla recovery image
### DISCLAIMER WARNING
This CAN brick your device !!!! and I AM NOT responsible !!! be WARNED !!!

Prerequisites:
You NEED unlocked bootloader !
fastboot ()
Linux: 64-bit version in git of jollarecovery (https://github.com/djselbeck/jollarecovery)
telnet client
MicroSD card
Using prebuilt image
untar recoveryp21.tar.gz to sdcard (you should then have recoveryp21.bin on the root of sdcard)
Download the boot image (https://github.com/djselbeck/jollarecovery/raw/master/boot-telnet-initrd.img)
Start fastboot on your computer (may need to be run as root) (This is not possible with bootloader after update to 1.0.25)
 $ fastboot -i 0x2931 boot boot-telnet-initrd.img
While holding the volume down key pressed, connect the USB cable
Jolla logo should appear, message "fastboot mode" on the very first line of the display
Check if LED turns blue and wait for it to turn red after some time
As soon as the LED is red, your network is up and running with the IP 192.168.42.17 and should be running a DHCP server
Configure the USB networking on your computer accordingly (if DHCP fails, try "sudo ifconfig usb0 192.168.42.18 netmask 255.255.255.0 up")
Connect to Jolla using telnet
 $ telnet 192.168.42.17
Mount your SD card
 $ mkdir /sd
 $ mount /dev/mmcblk1p1 /sd
'flash ' recovery partition with:
 $ cd /sd
 $ dd if=recoveryp21 of=/dev/mmcblk0p21; sync
Unmount the SD card
 $ umount /sd
Reboot normally