Also big thanks to the Chimeratool developers Authors are not responsible for any damage to your device! Everything you do is on your own risk! Following this tutorial is your own risk. During the process, your phone will lose all data game data, apps, photos, music etc. Make sure to a thorough backup before you start for example using Zune for music and videos. Remember to download my folder NokiaLumia800 from: , and extract it! See bottom for FAQ. Will try to update frequently if there happens to be some common errors! Backup Lumia Backup Contacts: 1. You will find Windows Phone Support Tools in the folder 64bit and 32 bit 2. Extract Wp7EasyBackup, and run application 3. The Backup Process could lead to a failure on custom Roms! Zune updates need to be supported by your custom rom RainbowMod 2. Open WP7 Easy Backup Tool 2. Click Next, then click Restore 3. This can take a while STEP 1 — Dload or Qualcomm First, check if you have Dload or Qualcomm on your Lumia 800: 1. Turn off your Lumia 800 2. Hold Power + Volume up, wait to it vibrate 3. Connect it to the computer 4. If your pop-up says NOKIA DLOAD go to STEP 2 5. If your pop-up says QUALCOMM go to STEP 3 a. Remember to hit cancel on format disk: NOT a pop-message: Right click on Safely Remove: 6. Disconnect the phone cable from the computer 7. Problem to start your Lumia? Hold Power + volume down for around 10 sec. Turn off your phone, then connect via USB, while pressing Volume Up 2. If you have Nokia DLOAD press Flash Qualcomm 3. Wait to it is finished 4. Disconnect the phone cable from the computer 5. Problem to start your Lumia? Hold Power + volume down for around 10 sec. Click on Troubleshoot, Advanced options, Start-up Settings, Restart 3. Click F7 for Disable driver signature enforcement For Windows 7: 1. Restart your computer 2. Before the Windows boot-screen appears hit ' F8'. This is best performed by pressing F8 repeatedly once the reboot starts 3. Enter OSBL MODE: a. Turn off Lumia 800 b. Hold Power + Volume UP wait to it vibrate5. Connect your Lumia to pc 6. Open System and go to Device Manager 7. Device Manager, right click on the CMDA and click Update Driver Software 8. Click Browse my Computer for driver software 9. Click on Browse and find the Driver-Qualcomm folder a. If you have 64 bit Windows install amd64 b. Click next and it will install. You will probably get a message like this: 11. Click Install driver software 12. And it will look like this: Install Windows USB drivers: 1. Open the Driver-WindowsUsb, extract and install. Run NSS PRO as administrator 2. Go to Flashing, then WP7 Tools 3. Connect your mobile to the pc 4. On the bottom left, choose Nokia USB Connectivity 5. Click on Detect, and Normal Mode automatically appears 6. Check of the WP7 Qualcomm on the checkbox below: 7. Click on OS File, and find your downloaded Rom. Take your Lumia out of the PC, and turn it off 9. Now hold Volume Up and plug it into the USB a. Wait to it vibrate b. Remember, always hit cancel on format disk! Change the Normal Mode to OSBL Mode 11. Click Write OS and wait to it is finished: 12. Plug your Lumia out of the pc. Problem to start your Lumia? Hold Power + volume down for around 10 sec. Then press power button Need code for Windows Live? Check this link: 2. You should save your number if a later reset is necessary Hotmail error code 85010017? Change server name to bay-m. Just wait, and suddenly you will have your phone ready for syncing You should also do the following: 6. Then it is just to sync your music and videos How to backup SMS before installing a new Custom ROM? Check this link: Enjoy! Can't read IMEI, backup will be skipped. Things to check: 1. Is the phone connected? Plug to the USB 2. Is it in the correct mode? Try to switch to OSBL mode 3. Have you installed the Qcom loader? Use the Install button But i didnt tried to use any custom rom to be installed. Can't read IMEI, backup will be skipped. Things to check: 1. Is the phone connected? Plug to the USB 2. Is it in the correct mode? Try to switch to OSBL mode 3. Have you installed the Qcom loader? Use the Install button But i didnt tried to use any custom rom to be installed. I got the same message when I made this tutorial. Please make sure you have followed the tutorial step by step! To get Nokia Connectivity make sure you have your Nokia turned on, and not into OSBL MODE! This helped for me: - Try to Run NSS Pro as administrator by right clicking on the exe, then click Run as administrator - Make sure when you power off your Nokia step 8 , disconnect your USB from computer Quote: Originally Posted by Dev. YoungBoy I got the same message when I made this tutorial. Please make sure you have followed the tutorial step by step! To get Nokia Connectivity make sure you have your Nokia turned on, and not into OSBL MODE! This helped for me: - Try to Run NSS Pro as administrator by right clicking on the exe, then click Run as administrator - Make sure when you power off your Nokia step 8 , disconnect your USB from computer You can only sync your music, videos back to your phone by using Zune, since the wp7 easy backup isn´t working on this ROM First time you connect your Lumia to Zune after installing ROM: 1. Just wait, and suddenly you will have your phone ready for syncing You should also do the following: 6. Then it is just to sync your music and videos I am sorry but you will not be able to get the old messages and game history back on Lumia Quote: Originally Posted by Dev. YoungBoy You can only sync your music, videos back to your phone by using Zune, since the wp7 easy backup isn´t working on this ROM First time you connect your Lumia to Zune after installing ROM: 1. Just wait, and suddenly you will have your phone ready for syncing You should also do the following: 6. Then it is just to sync your music and videos I am sorry but you will not be able to get the old messages and game history back on Lumia.
