It’s been a while after T-mobile one got Frozen Yogurt. However, it’s time to end since Google started pushing Froyo OTA update since last week. I got 2 OTA updates, but they both failed to complete the update. Why? because I rooted my EPE54B. Thus, OTA will not do the job nicely.
How? you can do all manual update =) As of now, Google released FRF85B. For whom you might not understand, all T-mobile and AT&T, which have their own build number, will have to same build, FRFxx. When Google first released Froyo to T-mobile Nexus One, it’s like FRF50. However, not it’s FRF85B which is official.
Update procedure: it will be 2 path for rooted N1 and unrooted N1.
1. For unrooted N1, EPE54B, you just grab images of your build below.
2. Rename the file to update.zip and copy to root directory of SD.
3. Reboot your N1 to recovery mode by holding volume down + power. You will get into HBoot/Fastboot mode.
4. Use volume up/down to select menu and power to select “recovery.” N1 will reboot again to /!\ page. That’s fine. Then, you have to get into recovery mode by holding power and press volume up.
5. You will see Android system recovery;you now can use your trackball to select any option. Choose apply sdcard:update.zip
6. Wait until reboot and have fun with Frozen Yogurt.
For rooted N1, you will have to take rougher route. You actually have many ways to do so. Custom ROM like Modaco or else, for example. However, I just prefer to have original ROM with root access. You can follow these steps to do so:
1. go back to original image.
2. update as unrooted N1 steps above
3. root FRF85B
For the first step, you need to download original image, here. Please check md5 too. Then you have to extract boot.img, recovery.img out to your android-sdk tools directory (c:\android-sdk\tools for me) Now you are ready to copy old image to replace superboot one by fastbooting. You have to get to Fastboot mode and check if it’s Fastbook USB which is indicated connection between N1 and computer.
c:\android-sdk\tools> fastboot devices // to check if computer sees N1
c:\android-sdk\tools> fastboot erase userdata
c:\android-sdk\tools> fastboot erase cache
This 2 steps above are optional and if you use Amon_RA’s recovery, you will have to get into recovery mode to wipe those.
c:\android-sdk\tools> fastboot flash boot boot.img
c:\android-sdk\tools> fastboot flash recovery recovery.img
c:\android-sdk\tools> fastboot reboot
That would be all set for returning back to original image =) (well, not exactly true since we didn’t care about system.img and userdata.img which the update doesn’t bother.)
For the last step, download superboot image here. Then rename to update.zip and apply sdcard:update.zip in recovery mode like when you did with updating Froyo image.
Now you will be very happy AT&T Froyo Nexus One like I am.
Note: FRF85B root update.zip didn’t do the trick for me since it’s error while updating. If you face the same situation, just ask. You can do a manual way also =)
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