[Sprint Samsung Galaxy S 4 General] dsjxxxxx:
It Works! It Works With Xposed!

Yes. I needed the modem. Everything works great - including Xposed. Thanks!!!

For those who need it, I provide a summary of the steps I took that resulted in success.

Base OK3 Install

1) Installed the OK3 ROM (SPH-L720_OK3_Stock_Deodexed.zip) using TWRP, following the 7 steps listed in katodragon's original post (including reboot).

- The phone took ~15 minutes on the Samsung splash screen (black background with pseudo fireworks coming out of the logo) to set up. Patience is required.

- No wifi. The ROM could not turn on the radio. The slider would hang halfway to on. If I backed out and went back to the setting, it was clearly "off."​

2) Installed the OK3 Kernel (SPH-L720_Stock-Deodexed-kernel.zip) using TWRP.

- I did perform another factory reset with TWRP just before installing the zip using TWRP, then rebooted. I

did not

wipe the system partition, though.

- Still no wifi. Same deal.

- I'm not sure if the kernel is necessary. But, everything is working well for me WITH the kernel. Enough said.​

3) Installed the OK3 Modem (OK3_Modem.tar.md5) using ODIN.

- Followed the usual process: phone in download mode, selected "AP" in ODIN, et cetera.

- Success! Everything - including wifi - has worked well since.

- Performed a NANDROID Backup using TWRP at this point, but I have not had to restore from it.
​

Xposed Install

1) Side-loaded "Xposed Installer" (XposedInstaller_3.0_alpha4.apk).

- Just for chuckles, I tried to fire it up. In failing, the app asked if the Xposed Framework was install (it wasn't).​

2) Installed "Xposed Framework" (xposed-v75-sdk21-arm-arter97-snapdragon_requestConcurrentGC.zip) using TWRP.

- This time, I did not clear anything before installing the zip (because it isn't a ROM).

- My first attempt failed, but I received a clear report (in bold red letters) that I needed to use the "ConcurrentGC" version of the framework. The successful file is referenced above.

- Rebooted.

- Success! I have installed several (~12) Xposed Modules since. Mostly side-loaded, but a few from the Play Store. Zero issues.​

Xposed Notes

- Resources I Found Helpful

a) Announcement w/ Directions (rovo89): http://xdaforums.com/xposed/official-xposed-lollipop-t3030118

b) HighonAndroid (Max Lee): http://highonandroid.com/android-ap...ed-installer-on-android-lollipop-5-05-15-1-1/

c) Xposed Module Repository: http://repo.xposed.info/module-overview

d) Wanam's Xposed Module Repository: http://repo.xposed.info/users/wanam

This is where I scored "Wanam Xposed for Android 5.x.x."​

- Xposed Installer (rovo89): http://xdaforums.com/showthread.php?t=3034811

- Xposed Framework (arter97): http://xdaforums.com/xposed/unofficial-xposed-samsung-lollipop-t3113463

Thank You to KATODRAGON

Again, thanks to katodragon for the deodexed ROM for the SPH-L720! It's been about five months since I upgraded to Lollipop. And, that means five months without Xposed. Thanks to him, I'm back to where I want to be.

---------- Post added at 09:25 PM ---------- Previous post was at 09:22 PM ----------

I successfully installed the OK3 Modem file as-is (including the MD5 extension) using ODIN v3.10.6 (Windows 10 Pro desktop PC).