[Bug]: APK installation fails on Android 16 (OxygenOS) — `pm install` returns `failed transaction 2147483646`

[sigma2017]

📝 Description

Enhancify worked perfectly until March 1, 2026 ~15:00. No Android/OxygenOS update was performed on that date. Suspected cause: silent Google Play Services or Android System WebView update.

The patching process completes successfully:
Download
Rebuilding APK (patch)
APK aligned (zipalign)
APK signed
Installation → black screen / silent failure in termux

🔄 Steps to Reproduce

Root Cause Identified

Running pm install directly in Termux returns:

failure calling service package: failed transaction 2147483646

This means Android 16 has restricted access to the Package Manager service from non-privileged processes. pm install is completely blocked.

Confirmed Working

• Same Enhancify version works perfectly on Samsung Galaxy A53 5G (Android 16 / One UI)
• ADB phantom process fixes applied on Oneplus 12 with no success:
  • settings_enable_monitor_phantom_procs = false
  • max_phantom_processes = 2147483647
  • sync_disabled = persistent

Suggested Fix

Replace pm install with am start intent as fallback for Android 16+:

📸 Screenshots / Videos

No response

🔥 Severity

None

📋 Error Logs

📱 Device Manufacturer

OnePlus

📲 Device Model

CPH2581_16.0.3.500(EX01)

🤖 Android Version

Android 16 (Api 36)

🔓 Root Status

❌ Not Rooted

🎨 Custom ROM

None

📌 Additional Context

• Device: OnePlus 12
• Android version: Android 16
• OxygenOS version: CPH2581_16.0.3.500(EX01)
• Enhancify version: v5.6.1-BETA Latest
• Termux version: v0.118.3 and v0.119.0-beta.3 (tested both)

✔️ Checklist

• I have searched existing issues to avoid duplicates
• I have provided all the required information
• I am willing to help fix this bug if guided

[Graywizard888]

If you was using rish send log here

I'm also oneplus 12R user with Android 16, rish works fine for me

[sigma2017]

No, I dont. i just run normal method with termux
Does Enhancify auto-detect Shizuku/rish or do I need to enable it somewhere in settings?

[Graywizard888]

The pm install you just run in termux require root or rish previliges to run, by default termux cannot connect to package manager by that command as shown here it's saying that it can't call package manager or failed to call.

failure calling service package: failed transaction 2147483646

---

Phantom process has nothing to do with it, it just for making termux not killed while patching, this command won't do any fix for installation, also you don't need to use this command with enhancify it handles it by default.

settings_enable_monitor_phantom_procs = false

---

Reason 1 :-
OG Termux issue

Reason 2 :-
Internal storage access might be removed later from termux

---

Solution :-

1. Try rish startup guide

2. use terminal ex OG termux not recommended.

[sigma2017]

Hello,
Thanks, I have followed your instructions 1. Try rish , i have edited the path towards storage inside setup_shizuku.sh which in my case was storage/Downloads, no errors, I was able to manually run rish -c "pm list packages" with no problems but somehow in termux the behavior is the same, after aligning the apk the screen become black.
2. I also uninstalled termux and installed your terminal but I noticed that the storage folder is not present into the /data/data/com.termux/fileshome so I don't know how to test with your terminal app.
Actually this is not a bug, is just a limitation for Oppo/Oneplus.
Many thanks in advance!

[Graywizard888]

Send recording link by storing in Google drive

[sigma2017]

I can't provide a screen record for the moment but I can confirm that after installing Terminal_EX and then after installing enhancify the application starts with Initiated Mode: Rish Mode instead of Non privilege mode as it starts on Samsung A53. So yes, setup_shizuku.sh did it's job with success message at the end of the script. And indeed the symlink towards storage is dealt by enhancify installation.
I will be back with a record to see that after choosing any app the screen becomes black, I can't see anything.

In order to make rish -c "pm list packages" to work, the file itself should be edited and replace first line #!/system/bin/sh with #!/data/data/com.termux/files/usr/bin/bash but with or without it the behavior is the same.

Long story short Enhancify worked without ANYTHING until yesterday like is working on my Samsung with no Shizuku or any other workarounds. I am extremely disappointed about this new limitation pushed by Oneplus, I won't buy this brand in the future, they simply lost me as a client.

[sigma2017]

Back with the screen record:
https://drive.google.com/file/d/1f_g6yDURGAwmCzc3t--xN1Ub11p3vi13/view?usp=drive_link

[Graywizard888]

Will cheak recording later

[Graywizard888]

Which source you was using

[sigma2017]

Revanced V5.50.2 (1st option)
It doesn't matter the source, the behavior is the same regardless the chosen source.