[Amazon Fire Phone] kaushalvp:
Amazon Fire Phone Bricked after editing build.prop

So I purchase the Amazon fire phone a couple of weeks back since there is now a way to put Cyanogen on the device. After getting it, I updated the device... thinking that it would get the latest (4.6.1 fire os) firmware...however it instead downloaded the latest (Fire phone (AT&T): Fire OS 4.6.4 (464000220)). It would then now allow me to downgrade to 4.6.1 (stating the the firmware that i have is higher version and then it would delete the 4.6.1 .bin file i placed on the internal folder). Seeing as how I could not get to 4.6.1, i thought it would be bright idea (It was not) to simply edit the build.prop file to show a lower version of the firmware..when i did this it made no difference and was still giving me the same error. I then proceeded to (without backing up) replace the build.prop file with one i found from the internet that starts with the info below, this was so as to trick the phone into thinking it was on lower firmware version and it would install the 4.6.1 version that I was pointing it to..solving my problem and allowing me to load CM.

I had already installed kingroot, and safestrap on the device and checkboxed "allow usb debugging mode" so as to give you the state of the device.

However, when i did this and restarted the phone it would not boot into the OS even... at which point i panicked and went to stock recovery and tried to "factory reset".. and not even in safestrap i cannot activate adb /sideload as my computer does not sense the device. Simply says "Fire Phone" in the device manager with a yellow triangle when in safestrap or SD4930UR when I am in stock recovery.

I would greatly appreciate some advise on how to simply get back to stock os/stock rom or any other way to get the device turned on. Thanks you for you thoughts.

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extract from the build.prop file i placed on the device before the above happened

# begin build properties

# autogenerated by buildinfo.sh

ro.build.id=JDQ38

ro.build.display.id=JDQ38

ro.build.version.incremental=13.3.1.0_user_310079819

ro.build.version.number=310079819

ro.build.lab126.project=zeebo_ship_310

ro.build.lab126.buildtype=Nightly

ro.build.lab126.build=798

ro.build.lab126.project=zeebo_ship_310

ro.build.lab126.buildtype=Nightly

ro.build.lab126.build=798

ro.build.version.sdk=17

ro.build.version.codename=REL

ro.build.version.release=4.2.2

ro.build.date=Fri Nov 15 03:06:38 UTC 2013

ro.build.date.utc=1384484798

ro.build.type=user

ro.build.lab126.sign.type=release

ro.build.user=build

ro.build.host=ip-10-172-101-194

ro.build.tags=release-keys

ro.build.platform.version=

ro.product.model=KFTHWI

ro.product.brand=Amazon

ro.product.name=thor

ro.product.device=thor

ro.product.board=thor

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.manufacturer=Amazon

ro.product.locale.language=en

ro.product.locale.region=US

ro.wifi.channels=

ro.board.platform=msm8974

# ro.build.product is obsolete; use ro.product.device

ro.build.product=thor

# Do not try to parse ro.build.description or .fingerprint

ro.build.description=thor-user 4.2.2 JDQ39 13.3.1.0_user_310079819 release-keys

ro.build.fingerprint=Amazon/thor/thor:4.2.2/JDQ39/13.3.1.0_user_310079819:user/release-keys

ro.build.characteristics=tablet

# end build properties

#

# system.prop for msm8974

#

---------- Post added at 11:09 PM ---------- Previous post was at 10:13 PM ----------

I was actually just now followed the instructions at the link below and was able to get it into ADB mode with the driver installed... and flashed the update.bin file i had on my computer using stock recovery and i am now back to stock rom with 4.6.1. :). Thought this might help the first person as well.

I cant post the link so just google "how-to-install-kindle-fire-adb-usb-driver", something with starting joyce ooi

Now i will be very careful and see if i can get CM11 on this thing... Thanks