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Update firmware on
OnePlus 8T

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  1. Download the latest Android 13/14 full stock ROM update from Oxygen Updater
  2. Extract stock ROM using payload-dumper-go
  3. Boot up LineageOS recovery
  4. Go to “Advanced” -> “Enable ADB”
  5. Check your DDR type using the following command: adb -d shell getprop ro.boot.ddr_type, or in case getprop returns an empty value, use: adb -d shell cat /proc/devinfo/ddr_type instead
  6. Go to “Advanced” -> “Enter fastboot”
  7. Execute following commands:
    fastboot flash --slot=all abl abl.img
    fastboot flash --slot=all aop aop.img
    fastboot flash --slot=all bluetooth bluetooth.img
    fastboot flash --slot=all cmnlib64 cmnlib64.img
    fastboot flash --slot=all cmnlib cmnlib.img
    fastboot flash --slot=all devcfg devcfg.img
    fastboot flash --slot=all dsp dsp.img
    fastboot flash --slot=all featenabler featenabler.img
    fastboot flash --slot=all hyp hyp.img
    fastboot flash --slot=all imagefv imagefv.img
    fastboot flash --slot=all keymaster keymaster.img
    fastboot flash --slot=all logo logo.img
    fastboot flash --slot=all mdm_oem_stanvbk mdm_oem_stanvbk.img
    fastboot flash --slot=all modem modem.img
    fastboot flash --slot=all multiimgoem multiimgoem.img
    fastboot flash --slot=all qupfw qupfw.img
    fastboot flash --slot=all spunvm spunvm.img
    fastboot flash --slot=all storsec storsec.img
    fastboot flash --slot=all tz tz.img
    fastboot flash --slot=all uefisecapp uefisecapp.img
    
  8. Flash correct XBL files
    • For DDR type 0 (DDR4):
      fastboot flash --slot=all xbl_config xbl_config.img
      fastboot flash --slot=all xbl xbl.img
      
    • For DDR type 1 (DDR5):
      fastboot flash --slot=all xbl_config xbl_config_lp5.img
      fastboot flash --slot=all xbl xbl_lp5.img