[Fire HD 8 and HD 10 General] lokio27:
Here's the folder with all my dumps: https://drive.google.com/drive/folders/1Xl3CfJnkY7NuR_sEkEf2XlifT7S7wE2S

All the files are compressed, and everything should be there.

Also, here's the fastboot getvar all output

C:\platform-tools>fastboot getvar all
(bootloader) unlock_status: false
(bootloader) unlock_code: 0xcbc541c615958bf408416cfd
(bootloader) antirback_tee_version: 0x0001
(bootloader) antirback_lk_version: 0x0102
(bootloader) antirback_pl_version: 0x0102
(bootloader) rpmb_state: 1
(bootloader) prod: 0
(bootloader) secure: yes
(bootloader) lk_build_desc: 6930388-20191017_215445
(bootloader) pl_build_desc: 1087595-20191021_214610
(bootloader) max-download-size: 0x8000000
(bootloader) variant:
(bootloader) logical-block-size: 0x200
(bootloader) erase-block-size: 0x0
(bootloader) hw-revision: 0
(bootloader) battery-soc-ok: yes
(bootloader) battery-voltage: 4313mV
(bootloader) partition-size:userdata: 64e27be00
(bootloader) partition-type:userdata: f2fs
(bootloader) partition-size:vendor: e000000
(bootloader) partition-type:vendor: ext4
(bootloader) partition-size:system: c0000000
(bootloader) partition-type:system: ext4
(bootloader) partition-size:cache: 1f400000
(bootloader) partition-type:cache: ext4
(bootloader) partition-size:recovery: 2800000
(bootloader) partition-type:recovery: raw data
(bootloader) partition-size:boot: 2000000
(bootloader) partition-type:boot: raw data
(bootloader) partition-size:cam_vpu3: f00000
(bootloader) partition-type:cam_vpu3: ext4
(bootloader) partition-size:cam_vpu2: 2000000
(bootloader) partition-type:cam_vpu2: ext4
(bootloader) partition-size:cam_vpu1: f00000
(bootloader) partition-type:cam_vpu1: ext4
(bootloader) partition-size:nvcfg: 800000
(bootloader) partition-type:nvcfg: ext4
(bootloader) partition-size:boot_para: 100000
(bootloader) partition-type:boot_para: raw data
(bootloader) partition-size:metadata: 2000000
(bootloader) partition-type:metadata: raw data
(bootloader) partition-size:tee2: 500000
(bootloader) partition-type:tee2: raw data
(bootloader) partition-size:tee1: 500000
(bootloader) partition-type:tee1: raw data
(bootloader) partition-size:lk: 100000
(bootloader) partition-type:lk: raw data
(bootloader) partition-size:misc: 100000
(bootloader) partition-type:misc: raw data
(bootloader) partition-size:keys: 800000
(bootloader) partition-type:keys: raw data
(bootloader) partition-size:dkb: 100000
(bootloader) partition-type:dkb: raw data
(bootloader) partition-size:kb: 100000
(bootloader) partition-type:kb: raw data
(bootloader) partition-size:preloader: 40000
(bootloader) partition-type:preloader: raw data
(bootloader) serialno: [[REDACTED]]
(bootloader) off-mode-charge: 1
(bootloader) warranty: no
(bootloader) unlocked: yes
(bootloader) kernel: lk
(bootloader) product: onyx
(bootloader) slot-count: 0
(bootloader) version-baseband: N/A
(bootloader) version-bootloader: onyx-6930388-20191017120652-20191017215
(bootloader) version-preloader: 0.1.000
(bootloader) version: 0.5
all: Done!!
Finished. Total time: 0.099s

Disabling the gatekeeper app just breaks the notification, things are still being blocked by an internal implementation of the package manager service.