Ensure that the device can boot if any of the operations, except for the (very few) latest, fail

Hey,
by executing the fastboot-step.sh script and following the guide on https://forum.xda-developers.com/hd8-hd10/orig-development/fire-hd-8-2018-downgrade-unlock-root-t3894256 I had this error. Seems like payload.bin does not exist. Do I have to insert a payload.bin file? Am I doing something wrong or what is missing? I'm running the script as root user btw.

[full console output]

[2020-10-03 20:09:25.403094] Waiting for bootrom
[2020-10-03 20:09:29.667655] Found port = /dev/ttyACM0
[2020-10-03 20:09:29.668126] Handshake
[2020-10-03 20:09:29.668922] Disable watchdog

 * * * Remove the short and press Enter * * * 


[2020-10-03 20:09:35.608975] Init crypto engine
[2020-10-03 20:09:35.623829] Disable caches
[2020-10-03 20:09:35.624445] Disable bootrom range checks
Traceback (most recent call last):
  File "main.py", line 121, in <module>
    main()
  File "main.py", line 57, in main
    load_payload(dev, "../brom-payload/build/payload.bin")
  File "/home/[username]/amonet/modules/load_payload.py", line 96, in load_payload
    with open(path, "rb") as fin:
FileNotFoundError: [Errno 2] No such file or directory: '../brom-payload/build/payload.bin'

With kind greets from Germany :)

Merge k4y0z changes into TWRP, this should be provided also as a separate update package for users with older TWRP to install.

• Backup/restore fixes
• Rename devices so that amazon updates can be installed "safely"

Reboot to recovery doesn't work on old fastboots, says invalid command.

If modem manager is running, the exploit wouldn't work.

encountered some weird issues with device communication/ running the exploite on ubuntu 16 \

the suspect partial cause is due to outdated adb/fastboot binarys, on certain usb chipsets (older intel)

https://forum.xda-developers.com/hd8-hd10/orig-development/unlock-fire-hd-10-2017-suez-t3913639/page55

Hey, i know this is aimed at an older version (and for unlocking the system) - but is there any way this, or other resources can be used to unbrick my device.

At the moment my fire HD 10 2019 edition has gotten stuck in bootrom mode due to a failed auto-update. I've had a look through the xda forums and have seen posts of people sharing stock firmware files but no idea how to restore them?

Any advice or suggestions on how to get this device booting again (not wanting to do a hacked firmware if i don't need to, but not against if it will get it working again)

This way in case the payload or usb connection freezes, the device would reboot.