[General Questions and Answers] Whyzor:
According to this thread someone had success re-rooting using Cydia Impactor, waiting for confirmation from others.

http://androidforums.com/metropcs-t-mobile-optimus-f3-all-things-root/803573-new-system-update.html

To disable disable OTAs on T-Mobile/MetroPCS:

1. With a root browser, go to the /cache dir and delete the update zip.

2. Open the phone dialer and type 3845#*659#, this will open the hidden menu.

3. Now go to Wi-Fi Setting-LG > OTA Setting and press disable.

---------- Post added at 11:25 AM ---------- Previous post was at 11:07 AM ----------

I did a text dump of all the files from the /cache/<OTA>.zip file, the 111 MB update seems pretty extensive, from kernel, to apps, frameworks, radio, & other binary drivers.

META-INF

com

android

metadata

google

android

update-binary

updater-script

MANIFEST.MF

CERT.SF

CERT.RSA

patch

system

app

AAT.apk.p

AAT.odex.p

AlarmClockbin.odex.p

ApplicationManagerbin.odex.p

ApplicationsProvider.apk.p

ApplicationsProvider.odex.p

BackupRestoreConfirmation.apk.p

BackupRestoreConfirmation.odex.p

Bluetooth.apk.p

Bluetooth.odex.p

BluetoothServices.odex.p

Books.apk.p

Books.odex.p

CABLService.odex.p

Calculatorbin.odex.p

CalendarProviderbin.odex.p

Calendarbin.odex.p

CameraApp3b.apk.p

CameraApp3b.odex.p

CertInstaller.apk.p

CertInstaller.odex.p

ChromeBookmarksSyncAdapter.apk.p

ChromeBookmarksSyncAdapter.odex.p

ChromeWithBrowser.apk.p

ChromeWithBrowser.odex.p

ContactsProviderbin.apk.p

ContactsProviderbin.odex.p

Contactsbin.apk.p

Contactsbin.odex.p

DefaultContainerService.apk.p

DefaultContainerService.odex.p

DigitalPenWorkService.apk.p

DigitalPenWorkService.odex.p

DmfAdmin.odex.p

DrmProvider.apk.p

DrmProvider.odex.p

DrmService.apk.p

DrmService.odex.p

ECID-release.odex.p

EasySettings.odex.p

FaceLock.apk.p

FaceLock.odex.p

FavoriteContactsbin.odex.p

FontServer.apk.p

FontServer.odex.p

GMS_Maps.apk.p

GMS_Maps.odex.p

Gallerybin.odex.p

Gmail.apk.p

Gmail.odex.p

GmsCore.apk.p

GmsCore.odex.p

GnssAirTest.apk.p

GnssAirTest.odex.p

GnssPosTs.odex.p

GoogleBackupTransport.apk.p

GoogleBackupTransport.odex.p

GoogleCalendarSyncAdapter.apk.p

GoogleCalendarSyncAdapter.odex.p

GoogleContactsSyncAdapter.apk.p

GoogleContactsSyncAdapter.odex.p

GoogleFeedback.apk.p

GoogleFeedback.odex.p

GoogleLoginService.apk.p

GoogleLoginService.odex.p

GooglePartnerSetup.apk.p

GooglePartnerSetup.odex.p

GoogleServicesFramework.apk.p

GoogleServicesFramework.odex.p

GoogleTTS.apk.p

GoogleTTS.odex.p

HTMLViewer.apk.p

HTMLViewer.odex.p

HiddenMenu.apk.p

HiddenMenu.odex.p

HiddenSIMUnlockMenu.apk.p

HiddenSIMUnlockMenu.odex.p

HiddenWVTest.apk.p

HiddenWVTest.odex.p

HomeSelectorbin.odex.p

IPService.odex.p

InputDevices.apk.p

InputDevices.odex.p

KeyChain.apk.p

KeyChain.odex.p

LGATCMDService.apk.p

LGATCMDService.odex.p

LGBackupbin.apk.p

LGBackupbin.odex.p

LGBrowser_JB.odex.p

LGDefaultAccount.odex.p

LGDownloadProviderUi_JB.odex.p

LGDownloadProvider_JB.odex.p

LGDrm.apk.p

LGEIMEbin.apk.p

LGEIMEbin.odex.p

LGEmailbin.apk.p

LGEmailbin.odex.p

LGHome3_Theme_Biz.odex.p

LGHome3_Theme_Optimus.odex.p

LGHome3a.odex.p

LGInstallServicebin.odex.p

LGOnScreenPhone3_JB.odex.p

LGPartnerBookmarksProvider.apk.p

LGPartnerBookmarksProvider.odex.p

LGPhone_JB.apk.p

LGPhone_JB.odex.p

LGSearchWidgetProvider.odex.p

LGSettings3_2.apk.p

LGSettings3_2.odex.p

LGSettingsAccessibility.odex.p

LGSettingsProvider3_2.odex.p

LGSetupWizardApp.odex.p

LGSetupWizard_JB.odex.p

LGSystemServer.apk.p

LGSystemServer.odex.p

LGSystemUI.apk.p

LGSystemUI.odex.p

LGUniTelephonyProvider3.odex.p

LgHiddenMenu.apk.p

LgHiddenMenu.odex.p

LiveWallpapersPickerbin.odex.p

LockScreen3.odex.p

LockScreenSettings.odex.p

MLT.odex.p

Magazines.apk.p

Magazines.odex.p

MediaProvider.apk.p

MediaProvider.odex.p

MediaUploader.odex.p

MemoWidgetbin.odex.p

Memobin.odex.p

MetroAppStore.1.8.1.odex.p

MobilePosse_MetroPCS-release.odex.p

Music2.apk.p

Music2.odex.p

MusicWidgetbin.odex.p

Musicbin.odex.p

MyMetro.odex.p

NFSClient.odex.p

NFSServer.odex.p

NetworkLocation.odex.p

NetworkPosTest.odex.p

PackageInstaller.apk.p

PackageInstaller.odex.p

Phonesky.apk.p

Phonesky.odex.p

PhotoAlbumWidgetbin.odex.p

PlusOne.apk.p

PlusOne.odex.p

PrivInit.odex.p

QMemobin.odex.p

Rhapsody.odex.p

SetupWizard.odex.p

SharedStorageBackup.apk.p

SharedStorageBackup.odex.p

SmartShare.odex.p

SmartShareProvider.odex.p

Stk.apk.p

Stk.odex.p

StreamingPlayerbin.odex.p

Street.odex.p

TagGoogle.apk.p

TagGoogle.odex.p

Tasksbin.odex.p

TimeService.apk.p

TimeService.odex.p

UniMessagebin.apk.p

UniMessagebin.odex.p

Upsell.apk.p

Upsell.odex.p

UserDictionaryProvider.apk.p

UserDictionaryProvider.odex.p

VVM-release-MPCS.odex.p

Velvet.apk.p

Velvet.odex.p

VidClipbin.odex.p

Videos.apk.p

Videosbin.odex.p

VoiceDialer_JB.odex.p

VoiceRecorderbin.odex.p

VoiceSearchStub.odex.p

VpnDialogs.apk.p

VpnDialogs.odex.p

VuTalkbin.odex.p

WAPPushManager.apk.p

WAPPushManager.odex.p

WapService.odex.p

WeatherMultiCPbin.odex.p

WfdP2pService.odex.p

WifiCall.apk.p

WifiCall.odex.p

WiseScreen.odex.p

XtraDownloadTest.odex.p

YouTube.apk.p

YouTube.odex.p

com.lge.shutdownmonitor.apk.p

com.lge.shutdownmonitor.odex.p

gba-service.odex.p

ims-service.odex.p

ip-provider.apk.p

ip-provider.odex.p

talkback.apk.p

bin

adb.p

atd.p

debuggerd.p

drmserver.p

efsks.p

mdnsd.p

morningcall.p

qcks.p

qmiproxy.p

vold.p

etc

firmware

vidc.b01.p

vidc.mdt.p

security

otacerts.zip.p

snd_soc_msm

snd_soc_msm_Sitar.p

NOTICE.html.gz.p

featureset.xml.p

system_fonts.xml.p

framework

am.jar.p

am.odex.p

android.policy.jar.p

android.policy.odex.p

android.test.runner.jar.p

android.test.runner.odex.p

apache-xml.jar.p

apache-xml.odex.p

bmgr.jar.p

bmgr.odex.p

bouncycastle.jar.p

bouncycastle.odex.p

bu.jar.p

bu.odex.p

com.android.location.provider.jar.p

com.android.location.provider.odex.p

com.broadcom.bt.jar.p

com.broadcom.bt.le.jar.p

com.broadcom.bt.le.odex.p

com.broadcom.bt.odex.p

com.google.android.maps.jar.p

com.google.android.media.effects.jar.p

com.google.widevine.software.drm.jar.p

com.google.widevine.software.drm.odex.p

com.lge.almond.jar.p

com.lge.almond.odex.p

com.lge.app.floating.res.odex.p

com.lge.core.jar.p

com.lge.core.odex.p

com.lge.divx.jar.p

com.lge.divx.odex.p

com.lge.krmessage.jar.p

com.lge.krmessage.odex.p

com.lge.lgdrm.jar.p

com.lge.lgdrm.odex.p

com.lge.mdm.jar.p

com.lge.mdm.odex.p

com.lge.media.jar.p

com.lge.media.odex.p

com.lge.systemservice.core.jar.p

com.lge.systemservice.core.odex.p

com.lge.wifiext.jar.p

com.lge.wifiext.odex.p

com.qualcomm.location.vzw_library.jar.p

com.qualcomm.location.vzw_library.odex.p

content.jar.p

content.odex.p

core-junit.jar.p

core-junit.odex.p

core.jar.p

core.odex.p

digitalpensdk.jar.p

digitalpensdk.odex.p

digitalpenutil.jar.p

digitalpenutil.odex.p

ext.jar.p

ext.odex.p

framework-res.apk.p

framework.jar.p

framework.odex.p

framework2.jar.p

framework2.odex.p

gba-service-lib.jar.p

gba-service-lib.odex.p

ime.jar.p

ime.odex.p

input.jar.p

input.odex.p

javax.obex.jar.p

javax.obex.odex.p

jsr-api.jar.p

jsr-api.odex.p

lge-res.apk.p

lghiddenlibs.jar.p

lghiddenlibs.odex.p

lgsvcitems.jar.p

lgsvcitems.odex.p

monkey.jar.p

monkey.odex.p

org.codeaurora.Performance.jar.p

org.codeaurora.Performance.odex.p

pm.jar.p

pm.odex.p

qcrilhook.jar.p

qcrilhook.odex.p

requestsync.jar.p

requestsync.odex.p

services.jar.p

services.odex.p

svc.jar.p

svc.odex.p

telephony_RAD.jar.p

telephony_RAD.odex.p

uiautomator.jar.p

uiautomator.odex.p

lib

hw

camera.msm8960.so.p

gralloc.msm8960.so.p

modules

ansi_cprng.ko.p

dma_test.ko.p

eeprom_93cx6.ko.p

evbug.ko.p

gspca_main.ko.p

ks8851.ko.p

lcd.ko.p

mcdrvmodule.ko.p

mckernelapi.ko.p

mmc_test.ko.p

msm-buspm-dev.ko.p

qce40.ko.p

qcedev.ko.p

qcrypto.ko.p

radio-iris-transport.ko.p

reset_modem.ko.p

scsi_wait_scan.ko.p

spidev.ko.p

test-iosched.ko.p

libAppDataSearch.so.p

libEmailCore.so.p

libExchangeActiveSync.so.p

libandroid_runtime.so.p

libandroid_servers.so.p

libaudcal.so.p

libbcc.so.p

libbcinfo.so.p

libbluetoothd.so.p

libcameraservice.so.p

libchromatix_hi543_default_video.so.p

libchromatix_hi543_preview.so.p

libchromatix_hi543_zsl.so.p

libchromatix_imx119_preview.so.p

libchromeview.so.p

libchromium_net.so.p

libdrmframework.so.p

libfacelock_jni.so.p

libfilterpack_facedetect.so.p

libfrsdk.so.p

libgoggles_clientvision.so.p

libgoogle_recognizer_jni_l.so.p

libjni_xt9input_v9.so.p

liblgdrm.so.p

liblgsecclk.so.p

libmdnssd.so.p

libmmcamera_frameproc.so.p

libmmcamera_plugin.so.p

libmmcamera_statsproc31.so.p

libnexadaptation_layer.so.p

libnexaudiorenderer.so.p

libnexplayersdk.so.p

libnexstreaming_aac_dl.so.p

libnexstreaming_ac3_lge_dl.so.p

libnexstreaming_adpcm_dl.so.p

libnexstreaming_amrnb_dl.so.p

libnexstreaming_amrwb_dl.so.p

libnexstreaming_asp_dl.so.p

libnexstreaming_divx3_dl.so.p

libnexstreaming_dts_dl.so.p

libnexstreaming_evrc_dl.so.p

libnexstreaming_flac_dl.so.p

libnexstreaming_gsm610_dl.so.p

libnexstreaming_h264_dl.so.p

libnexstreaming_mp3_dl.so.p

libnexstreaming_ogg_dl.so.p

libnexstreaming_pcm_dl.so.p

libnexstreaming_qcelp_dl.so.p

libnexstreaming_qcom_dl.so.p

libnexstreaming_theora_dl.so.p

libnexstreaming_vp8_dl.so.p

libnexstreaming_wma_dl.so.p

libnexstreaming_wmv_dl.so.p

libnexvideodisplayer.so.p

liboemcamera.so.p

libpatts_engine_jni_api.so.p

libril-qc-qmi-1.so.p

libspeexwrapper.so.p

libstagefright.so.p

libstagefright_soft_aacdec.so.p

libstagefright_soft_aacenc.so.p

libvideochat_jni.so.p

libwebcore.so.p

libwebrtc_audio_preprocessing.so.p

vendor

lib

drm

libdrmwvmplugin.so.p

build.prop.p

boot.img

recovery

recovery.img

system

app

GoogleDrive.apk

GoogleDrive.odex

Hangouts.apk

Hangouts.odex

PlayGames.apk

PlayGames.odex

Videos.odex

talkback.odex

etc

permissions

com.lge.hardware.mura.xml

fonts

HYTravel.ttf

HYTravel_Bold.ttf

lib

libRSSupport.so

libbcc.so.sha1

libdocscanner_image-v7a.so

libdocsimageutils.so

libgames_rtmp_jni.so

liblinearalloc.so

libndk1.so

libplus_jni_v8.so

librectifier-v7a.so

librs.antblur.so

librs.antblur_constant.so

librs.antblur_drama.so

librs.drama.so

librs.film_base.so

librs.fixedframe.so

librs.grey.so

librs.image_wrapper.so

librs.retrolux.so

librsjni.so

libvcdecoder_jni.so

libwebp_android.so

radio.img