[OnePlus 6 & 6T Cross Device Development] carlese:
This is what I tried lately, with the delete method instead of delete recursive, but the zip file gives me "error 6"..

run_program("/sbin/busybox"); "umount"); delete("");

run_program("/sbin/busybox"); "mount"); delete("");

delete("/system/reserve/OPForum");

delete("/system/reserve/OPNote");

delete("/system/app/AntHalService");

delete("/system/app/AutoRegistration");

delete("/system/app/BasicDreams");

delete("/system/app/BookmarkProvider");

delete("/system/app/BuiltInPrintService");

delete("/system/app/card");

delete("/system/app/DiracManager");

delete("/system/app/EngineeringMode");

delete("/system/app/EngSpecialTest");

delete("/system/app/GooglePrintRecommendationService");

delete("/system/app/GoogleTTS");

delete("/system/app/LogKitSdService");

delete("/system/app/oem_tcma");

delete("/system/app/OemAutoTestServer");

delete("/system/app/OEMLogKit");

delete("/system/app/OPBugReportLite");

delete("/system/app/OPSesAuthentication");

delete("/system/app/PartnerBookmarksProvider");

delete("/system/app/PhotosOnline");

delete("/system/app/PlayAutoInstallConfig");

delete("/system/app/QdcmFF");

delete("/system/app/RFTuner");

delete("/system/app/SensorTestTool");

delete("/system/app/SoterService");

delete("/system/app/SeempService");

delete("/system/app/talkback");

delete("/system/app/uimremoteclient");

delete("/system/app/Videos");

delete("/system/app/WallpaperBackup");

delete("/system/app/WapiCertManage");

delete("/system/app/WifiRfTestApk");

delete("/system/priv-app/DiracAudioControlService");

delete("/system/priv-app/GoogleFeedback");

delete("/system/priv-app/OPCellBroadcastReceiver");

delete("/system/priv-app/Tag");

delete("/system/etc/usb_drivers.iso");

delete("/system/reserve/OPBackupRestore");

delete("/system/reserve/OPFilemanager");

delete("/system/reserve/OPIconpackCircle");

delete("/system/reserve/OPIconpackOnePlus");

delete("/system/reserve/OPIconpackSquare");

delete("/system/reserve/Weather");

delete("/system/app/Account");

delete("/system/app/BackupRestoreRemoteService");

delete("/system/app/Drive");

delete("/system/app/Duo");

delete("/system/app/GooglePay");

delete("/system/app/HTMLViewer");

delete("/system/app/Music2");

delete("/system/app/NVBackupUI");

delete("/system/app/OPPush");

delete("/system/app/YouTube");

delete("/system/priv-app/BackupRestoreConfirmation");

delete("/system/priv-app/CallLogBackup");

delete("/system/priv-app/GoogleRestore");

delete("/system/priv-app/GoogleBackupTransport");

delete("/system/priv-app/ManagedProvisioning");

delete("/system/priv-app/OPAppLocker");

delete("/system/priv-app/OPDeviceManager");

delete("/system/priv-app/OPDeviceManagerProvider");

delete("/system/priv-app/SharedStorageBackup");

delete("/system/priv-app/Turbo");

delete("/system/app/BluetoothMidiService");

delete("/system/app/CalendarGoogle");

delete("/system/app/Chrome");

delete("/system/app/datastatusnotification");

delete("/system/app/GoogleContactsSyncAdapter");

delete("/system/app/Maps");

delete("/system/app/OPBackup");

delete("/system/app/OpSkin");

delete("/system/app/Photos");

delete("/system/priv-app/CNEService");

delete("/system/priv-app/ProxyHandler");

run_program("/sbin/busybox"); "umount"); "/data");

run_program("/sbin/busybox"); "umount"); delete("");

ui_print(" ");

ui_print("Done.");

ui_print(" ");

ui_print("Ready to reboot.");

ui_print(" ");

ui_print("Enjoy better battery life, more RAM and more privacy!");

ui_print(" ");