[FS#1303] Attended Sysupgrade: brcm2708 target hasn't been converted to use the new image generation code yet

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - tlaurion (tlaurion) 

Attached to Project - OpenWrt/LEDE Project
Summary - Attended Sysupgrade: brcm2708 target hasn't been converted to use the new image generation code yet
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details -  - Device problem occurs on rpi3
 - LEDE Snapshot Attended Sysupgrade doesn't work since the image is not built with new image builder.

Steps to reproduce: 
  - Install https://downloads.lede-project.org/snapshots/targets/brcm2708/bcm2710/openwrt-brcm2708-bcm2710-rpi-3-ext4-sdcard.img.gz over sdcard.
  - Install luci-app-attendedsysupgrade package
  - Configure it to point at https://ledeupdate.planetexpress.cc/
  - There is a proposed SysUpgrade. Click on Generate.
   - Error: "Unsupported device, release, target, subtraget or board"
   

Error was previously posted https://github.com/aparcar/attendedsysupgrade-server/issues/88
 

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1303