I fought with this damn update since late last night.... FInally i have a solution that should work 99.9% for everyone who has this install error. This error is from either a rooted phone, a corrupted system directory or a previous update that didnt complete. Who would of thought bringing your phone back to stock even if it wasn't rooted would allow you to install froyo... While this was made mostly for people with rooted/modified samsung fascinates it also seems that the majority of people with no modifications to their phones can't upgrade to froyo because of the same error. If you were one of the people like me who tried everything to get the new froyo update to install but kept getting this dreaded message.... UPDATE FAILED or INCOMPLETE. reason: IP_PREVIOUS_UPDATE_FAILED and you tried everything, removing battery, hard reset etc and still didn't work then this fix is for you. This will flash the stock rom, kernel, modem, system files, and stock recovery. It will also format the data and cache. (IT WILL WIPE YOUR PHONE) USE AT YOUR OWN RISK! Credit goes to adrynalyne For his hard work creating the original rom package! Download the Samsung USB Drivers for your phone if you already have not by either plugging in your phone via USB and following prompt to download driver or go here: Samsung This is assuming that step is already done. 1. Download the Samsung Fascinate DI01 Rom from http://220.127.116.11/DI01package3.tar save this file to your desktop. Download Odin 3 1.3 from http://18.104.22.168/Odin3 v1.3.exe save to desktop. (thank you to my hosting company for the space) 2. Run Odin 3 on your computer. (to help with flashing issues run Odin as Administrator if using Vista or WIN7). 3. Put your phone into download mode. (Power off the phone, remove the battery, plug the usb cable from your pc into the fascinate, press and hold the volume down button until the download screen appears.) Note: to help avoid flashing issues, please make sure to use the original USB cable that came with the phone and plug the cable into the rear USB ports if you have a desktop PC, DO NOT use a HUB! 4. Verify that your phone is connected/detected by Odin. Look in the ID:COM seciotn, it should list a com port port #. Click on the PDA button and browse for DI01package3.tar on your desktop. After the file is selected click on START. AT this point it is replacing your damaged/rooted rom with the original Samsung Rom. This will flash the stock rom, kernel, modem, system files, and stock recovery. It will also format the data and cache. 5. Once the flash is complete Replace battery and reboot the phone, if all is well you can now go into settings/about/System Updates. There should be about a 10MB file waiting to download. Go ahead and download and install this update, phone will reboot. When this update is finished you can repeat those steps to download the froyo 2.2 update and watch the magic happen. If you have problems with the flashing.. IE: Getting stuck on Factoryfs.rfs is the most common. Make sure you are running Odin as Administrator, using original Usb cable and plugged directly into your PC's USB port... No HUB. If problem persists, try another USB port, restart PC. You can also copy the update.zip file to your SD card so you dont have to wait for the long download. You can get the update.zip from here: [Updated: Download Link And Instructions] Just In: Samsung Fascinate ED01 Froyo Update Starts Early, Rolling Out Now | Android News, Reviews, Apps, Games, Phones, Tablets, Tips, Mods, Videos, Tutorials - Android Police Before you follow the instructions on that page to run the update.zip from sd card, make sure to update your phone after flashing it to the latest revision prior to froyo 2.2, or the froyo update will not run. As the 2.2 is an update, not a full release. EDIT: I just want to be clear... this WILL wipe your phone. SO back it up first if u need to save anything, or sync it.