[Fire TV Original Android Development] Deleted member 11959327:
I'm pretty sure that I executed the sequence described above. Advise If the following is not the correct sequence;

1. boot into FireOS with the adb root/permissive option

2. after fully booted, hold the action button for 15sec

3. after shutdown, try alternatively pressing buttons other than the action button

4. compare the results (of initially pressing buttons other than the action button after shutdown) to pressing the action button without first pressing other buttons.

=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2022.06.08 16:45:42 =~=~=~=~=~=~=~=~=~=~=~=
idme_platform_write block_offset=3e7000, capacity=400000
fos_flags set to 87
idme_platform_write block_offset=3e7000, capacity=400000
dev_flags set to 64
cmd cb_download is download:008f2800
Starting download of 9381888 bytes
.......................................................................
downloading of 9381888 bytes finished
Booting kernel...success
boot_addr_start bootm 0x1080000
kernel_size 0x8af0af, page_size 0x800, totalSz 0x8b0000
ramdisk_size 0x0, totalSz 0x0
dtbSz 0x42000, Total actualBootImgSz 0x8f2000
amzn_verify_onetime_unlock_code: Verify one time unlock cert fail, ret = -5
ee_gate_off ...
## Booting Android Image at 0x01080000 ...
reloc_addr =73d75610
copy done
Kernel command line: rootfstype=ext4 ro rootwait skip_initramfs OTG_mode=DEVICE androidboot.selinux=permissive
load bootimage dtb from 0x74625610 ......
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[ 105.592503@4] input input0: key 138 down.

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[ 121.598891@2] vendor_write_shutdown_reason: shutdown_reason 0x0
[ 122.598985@2] hdmitx: hw: avmute set to 2
[ 122.699063@2] ISSI: resetting device before reboot!
[ 122.702896@2] meson-mmc: meson_mmc_clk_set_rate_v3 269
[ 122.703003@2] meson-mmc: actual_clock :0, HHI_nand: 0x80
[ 122.703497@2] meson-mmc: [meson_mmc_clk_set_rate_v3] after clock: 0x10100002
[ 122.705549@2] amvecm: shutdown module
[ 122.705735@2] di pre hrtimer canel 1.
[ 122.705764@2] [DI] shutdown done.
[ 122.706176@2] vout: vout2: aml_vout2_shutdown
[ 122.706925@2] vout: aml_vout_shutdown
[ 122.707185@2] fb: osd_shutdown
[ 122.707569@2] amvdac_drv_shutdown: shutdown module
[ 122.708205@0] reboot: Power down
bl31 reboot reason: 0x108
bl31 reboot reason: 0x108
system cmd 0.
bl30 get wakeup sources!
process command 00000006
bl30 enter suspend!
Little core clk suspend rate 1908000000
Big core clk suspend rate -2086967296
store restore gp0 pll
suspend_counter: 1
Enter ddr suspend
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24
DMC_DRAM_STAT11: 0x24

The above log happened both when the action button was pressed and also when any other button was pressed instead (after shutdown). New lines containing "DMC_DRAM_STAT11: 0x24" are repeated endlessly, or at least for the 10 minutes that I let it run.

I could not get the Cube to reboot if I pressed the action button again after shutdown. Perhaps I wasn't supposed to wait to press it until the shutdown was complete?

A reboot string never appeared, just ""DMC_DRAM_STAT11: 0x24"" endlessly until the power was cycled.

I'm still running PS7229/1856. I don't have an ota for an android 9 version of fireos that is not the current version.

If this is some sort of standby mode, I can't seem to wake out of it.