[Xperia Play Android Development] zachariahpope:
CDMA R800x FOLLOW THESE INSTRUCTIONS:

1. Follow all steps from the OP to install this Sony Official ICS Test ROM...

(Install appropriate Kernel+WIFI modules, Wipe Data/Factory Reset, Cache, and Dalvik Cache)

2. Flash the AtariiKeiranFTWCM9.zip file to convert the phone from r800i to r800x and install the appropriate libs and whatnot.

3. Now because the AtariiKeiranFTWCM9.zip has a modified version of the SEMCphone.apk, after flashing the zip package through CWM, the phone is most likely NOT going to work. It will most likely be in a constant force closing state. So what you need to do, again, AFTER flashing AtariiKeiranFTWCM9.zip is install THIS special SEMCphone.apk. https://hotfile.com/dl/170162978/c03d6c6/SemcPhone.apk.html In order to do so you need an app such as root explorer. Simply place this file somewhere on your phones SD card, and copy the file from root explorer to the system folder. When you are in the system folder, change the permissions of the file to rw-r--r-- .. it should look something like this .. once you have changed the permissions, copy or move the file from the system folder to the system/app folder. You will be prompted to overwrite the existing SEMCphone.apk file. Select yes. Now reboot the phone.

4. Flash a CDMA baseband from Flashtool. This is not hard to do. Simply select an R800x FTF package. I recommend using the verizon 4.0.2.E.57 FTF package (android 2.34) because it is the newest baseband. However, using the 2.33 baseband should also work just fine. To flash only the baseband, make sure you CHECK every box except for "Exclude baseband." This means CHECK exclude system, kernel, uncategorized, FOTA, and TA (TA probably wont show up in the 2.33 FTF) Also make sure that you UNCHECK the wipe data, wipe apps log, and wipe cache boxes.

5. Now that you have flashed the baseband, reboot the phone. You should have a data roaming signal. Hooooray! Now use your new phone app to dial *228 to activate the phone. The cool thing about this ROM as opposed to other Sony ICS beta based roms is that activation will complete without ending abruptly. By the way, the first time you dial out, the phone should force close, but that is the only time it will do this, and the call screen should actually still go to the next screen despite the FC message.

6. Once you have activated the phone, again, reboot. You should see that the roaming signal has gone away and you have some network signal bars. You may be thinking at this point.. Hmm.. well I had network signal bars to begin with, but where's the 3G?! Well good point, but don't forget you had those network signal bars, no 3G, and no working dialer/phone app. Now we just have to get some 3G, right? Riiight. Ok, now do you remember those wifi modules that you installed earlier? Now's a good time to use them. Connect to your wifi connection, and go on the play store and type in "3G Reconnect" Download the app of the same name. It should have some green arrows for the icon. Once you have downloaded and successfully installed the app, disconnect your wifi, and then turn on the app. Set it to start monitoring the network. Be patient... it can take up to 20 minutes, but it WILL eventually acquire the 3G Signal that you are looking for. Now you should have a fully working rom with data, calls, and messaging all working for your CDMA phone.