LG G Pad F 8.0 (UK495) Android 6.0: Cannot Access Bootloader or Recovery

I have an older [LG G Pad F 8.0 (UK495)](https://www.lg.com/us/tablets/lg-UK495-g-pad-f-8.0) . The tablet originally came with Android 5.1 but at some point received an official upgrade to 6.0. My ultimate goal is to hopefully root the device & install a custom recovery & ROM. But I am running into two problems in trying to access the bootloader & default recovery. Enable OEM unlock & USB debugging are both enabled in developer options. ADB recognizes the device connected to my Windows system:

> adb devices
List of devices attached
LGUK49520651306 device

I didn't find any instructions in the official documentation from LG. But according to many tutorials found online it should be possible start the bootloader using a combination of the power & volume keys. The only combination I have found to do anything is holding power + vol down to start the device. Release once the LG logo appears & immediately press power + vol down again. But this only brings up a minimalist menu for resetting the device to factory defaults: ADB is also unable to bring up the bootloader. Executing adb reboot bootloader restarts the device but in regular user mode. So I am unable to use fastboot to unlock the bootloader & flash partitions. I can get into what appears to be recovery mode with adb reboot recovery. A black screen with the Android logo laying on its back: But the usual "no command" text is missing & no button combinations (power + vol up/down) bring up the recovery menu options. I read on XDA that some manufacturers/distributors make the [bootloader & recovery partitions more obscure or just completely remove access](https://forum.xda-developers.com/t/android-phone-with-no-bootloader.1504664/) . Some users have been able to use a [KingRoot exploit](https://forum.xda-developers.com/t/3398918/page-4#post-68473678) to root this device without unlocking the bootloader. But the exploit only works for devices with Android 5.1 or older. So it's not an option for me. I need to access the bootloader to unlock it as far as I can tell. Is anyone familiar with this device or have any suggestions that may help me to unlock the bootloader & access recovery mode? This is the first device on which I wasn't even able to bring up the bootloader. The following is a selection of tutorials & threads from the many that I looked through for help: - [Help Can't access bootloader](https://forum.xda-developers.com/t/2738234/) - [Cannot boot into bootloader/fastboot](https://forum.xda-developers.com/t/3738850/) - [How to put LG UK495 G Pad F 8.0 in recovery mode?](https://www.hardreset.info/devices/lg/lg-uk495-g-pad-f-80/recovery-mode/) - [How to unlock Bootloader in LG UK495 G Pad F 8.0?](https://www.hardreset.info/devices/lg/lg-uk495-g-pad-f-80/faq/faq/lg-bootloader-unlock/) - [Download and Install TWRP Recovery on LGE LG G Pad F 8.0 2nd Gen LG-UK495 t8lte](https://tweakdroid.com/twrp/lge-lg-g-pad-f-8-0-2nd-gen-lg-uk495-t8lte/) _(this one says "2nd gen" so not sure if it even applies to my device)_ - [How To ROOT Android 6.0 Marshmallow Android 10](https://www.youtube.com/watch?v=rTeuF4uJ6lU) **-- Update --** I found some stock firmware images available for my device: - [UK49520c_00_0718](http://lg-roms.com/lg-firmware/lg-g-pad-f-80-lguk495/uk49520c-0718/6200) - [UK49522a_00_0329](https://lgrom.com/firmware/LGUK495/UCS/UK49522A_00/8722) I was able to flash them to the device in upload mode using [LG Flash Tool](https://androidmtk.com/download-lg-flash-tool) . The ROMs were successfully applied, but did not fix or change access to bootloader or recovery mode.