Restore Jolla to factory state:

Needed:
 - a PC (Linux preferred, but Windows is also OK)
 - MicroSD card with a minimum of 16GB
 - Micro USB Cable
 - A lot of patience!

Instructions:
- Download jolla-factory.tar.xz file
- Format the MicroSD card to Ext4.
   Remember to backup everything on the MicroSD card before formatting!
   Because everything will be deleted on the MicroSD card!
   * Read below on how to do this on a Windows PC
- Extract the file using any file extrator (like 7zip or Winrar)
  * You can also copy the jolla-factory.tar.xz file
    and extract it directly on your phone using the command:
    tar -xzvf /sdcard/jolla-factory.tar.xz -C /sdcard
    (skip next step if you want to do so)
- Copy the extracted new-jolla.img file to the freshly formatted MicroSD card
- Insert the MicroSD card into the Jolla phone
- Enter the phone into Recovery Mode and plugin the USB Cable
  * If needed, install the drivers too (read below on how to do this!)
- Download and run putty
- Enter the hostname:
  10.42.66.66
- Port:
  23
- Connection Type:
  Telnet
- Click on OPEN
A command prompt will open and it should show you the Jolla recovery menu.
- Press 4, and press ENTER
- Enter the following commands exactly like this:
  mkdir /sdcard
  mount /dev/mmcblk1p1 /sdcard
  * If you extracted the tar.xz file on a PC already, you can skip the next command,
    Otherwise enter the command:
    tar -xzvf /sdcard/jolla-factory.tar.xz -C /sdcard
- Now enter the command to "Flash" your phone using the command:
  dd if=/sdcard/new-jolla.img of=/dev/mmcblk0p28 
  * Please note that this process may take some time!
- Once it's done, enter these 2 commands:
   sync
   reboot
- The phone should be restarted
- Done! 

Have fun!



** How to format Ext4 in Windows:
- Download and install pwfree91
- Click right mouse button on the MicroSD card in the installed program
- Choose Partition type: Ext4
- Apply
To gain access to Ext4 filesystems, you need to install drivers for Windows!
- Download eExt2Fsd-0.62.exe and install it. (A reboot may be required)

** How to put Jolla into Recovery Mode:
- Turn off your Jolla device and remove all cables and the battery.
- Press and hold down the Volume Down button while re-inserting the battery
- While still holding down the Volume key, press the power key until Jolla vibrates.
- You can now release all buttons. You have now put your device into Recovery Mode.
  * When the phone is in Recovery Mode only the Jolla logo is shown on the display, the LED is constantly on.
    Do not worry if the LED turns off - it should turn on again when you connect the USB cable.

** Install Recovery Mode Drivers:
- Connect your Jolla to your PC with a USB-cable.
- Right click on “Computer”. Select “Manage”.
- Click on Device Manager and find the Device "RNDIS" under “Other Devices”.
- Right click on that device and select Update Driver Software.
- When the window pops up (Windows 7 and 8) select “Browse My Computer” for driver software,
  then on the next screen, click on the bottom that says “LET ME PICK”.
- Next you will be asked for the device type. Here you go down to Network Adapters – click on it. Select “Next”, then.
- Then when it asks you to select manufacturer, skip Microsoft and select “Microsoft Corporation”. 
   NOTE: Windows 8 has only "Microsoft" - select that.
- Then select “Remote NDIS Compatible Device” or "Remove NDIS based Internet Sharing Device".
- Select “Next”. It will say it is not safe, etc. Ignore this. Proceed to install it. 
  Windows should show a message about successful update. Close it. “RNDIS” should appear now below Network adapters.