There is already a fully functional JB 4.1.2 rom for ZTE Force.
http://androidforums.com/threads/fi...an-rom-public-release-update-from-ics.886408/
It comes from an official? Textnow ZTE Force n9100.
The sawbones version has the issue with the upside down front camera.
My freedompop version has this fixed.
Root with Kingo root or any other. Copy the file below to your sd card. Hold down volume down key and power key at the same time you start up the phone. When it vibrates it means it is going to go to recovery. Freedompop already has Clockwork Mod 6.0.3.0 touch recovery on it. It has issues though. Go to restore and backup. Backup to external sd then wipe cache, wipe dalvik cache (advanced menu). wipe data/factory reset, and then install this zip from external sd card.
https://www.dropbox.com/s/6y2lu3s5qlen812/ZTE_FORCE_JB_Freedompop.zip?dl=0
Known Issues: (updated 3/21/2015)
1. ICCID in "Settings- About Phone - Status" shows as unknown (cosmetic only)
2. If your not paying FreedomPop for Wi-Fi tether, you can get it for free (will use data limit) using the included Wi-Fi Tether app.
Change Device profile to: Generic ICS/JB (wlan0)
Change Setup Method to: Netd-Ndc (master)
Check WiFi-driver reload (first one only)
These settings allow wifi tether but the only way to get Wi-Fi back after use is to reboot the phone.
If you feel like it, you may upgrade your recovery image to non touch 6.0.4.4. Everything appears to work in it.
http://androidforums.com/threads/recovery-unofficial-cwm-v6-0-4-4.749083/
If you want to go back to an ICS nandroid CWM backup run this zip first to restore the necessary ICS partitions:
https://www.dropbox.com/s/sf82i0c2sdpxxb9/ZTEForceICSPartitions.zip?dl=0
You can now have all the apps from the FreedomPop version without all the FreedomPop apps but with the Sprint Apps instead (Sprint Mobile ID, Sprint Voicemail, Sprint Zone).
Note: Sprint Zone does not appear in my list of apps on my FreedomPop phone. I think its suppose to show up as "Sprint Zone" for Sprint users, "Boost Zone" for Boost Mobile users, and "My Account" for Virgin Mobile users. Correct me if I am wrong and do let me know if this app does shows up on these carriers.
Instructions (works on Sawbones rom too to convert to Sprint, Boost, or Virgin):
Boot into recovery.
Wipe Dalvik Cache (advanced menu)
Wipe Cache.
Wipe Data/Factory Reset
Install the FreedomPop version rom or Sawbones rom.
DO NOT REBOOT YET!
Install one of the undo zips below.
Reboot.
Download the undo for your carrier:
Generic:
https://www.dropbox.com/s/eiqie21s3ckhr9t/undoFP.zip?dl=0
Sprint:
https://www.dropbox.com/s/b59uqfzc5wytz6y/undoFP - Sprint.zip?dl=0
Virgin Mobile:
https://www.dropbox.com/s/3amq6ed2wrlkqt8/undoFP - Virgin.zip?dl=0
Boost:
https://www.dropbox.com/s/y5gf2fgj973qou4/undoFP - Boost.zip?dl=0
The generic version will display the "android" boot animation just like the sawbones version and should be safe for all users.
The other carrier versions will display their own carrier's boot animation. Virgin Mobile even has its own boot sound. On Sprint's version, it also creates a slightly different Sprint Mobile ID app icon (normal icon but with a yellow outline).
I can not test whether the other carrier versions causes any ill effects (like MMS not working). If you have any issues please report them in this thread and go back to the generic version and see if that fixes your problem.