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projects:hh40v [2023/04/08 17:37] – Andreas Böhlerprojects:hh40v [2023/04/27 21:20] (current) – [Installing OpenWrt] Andreas Böhler
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 ==== Backup file format ==== ==== Backup file format ====
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 +Very brief overview of the file format after decryption.
  
 <code> <code>
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 ===== Installing OpenWrt ===== ===== Installing OpenWrt =====
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 +OpenWrt support to snapshot was added on 2023/04/23 with commit https://github.com/openwrt/openwrt/commit/097f350aebc542963c7208af4973ff17e01ce76e.
  
 Running OpenWrt on this device requires a slightly different partition layout, because the kernel partition is fixed with 1.5MB and thus too small to run a recent kernel. However, there is enough space and initial installation requires a small modification of one U-Boot variable. As long as the system boots normally, there are no problems with this approach. Installing via TFTP (recovery) restores the variable back to default, forcing the installation of a stock firmware. Running OpenWrt on this device requires a slightly different partition layout, because the kernel partition is fixed with 1.5MB and thus too small to run a recent kernel. However, there is enough space and initial installation requires a small modification of one U-Boot variable. As long as the system boots normally, there are no problems with this approach. Installing via TFTP (recovery) restores the variable back to default, forcing the installation of a stock firmware.
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 ===== Restoring Stock ===== ===== Restoring Stock =====
  
-To restore stock, you need a system image. Unfortunately, you can't backup without disassembling and soldering serial headers. However, a firmware upgrade can be downloaded from https://alcatelfirmware.com/alcatel-onetouch-hh40v. Look for the file Firmware/DownloadImage/uprade_hh40v_all.tar.gz. Inside, you will finde the file "sysupgrade/firmware-system.bin". This firmware-system.bin can be installed via TFTP recovery. The TFTP recovery also resets any U-Boot variables so it will boot normally.+To restore stock, you need a system image. Unfortunately, you can't backup without disassembling and soldering serial headers. However, a firmware upgrade can be downloaded from https://alcatelfirmware.com/alcatel-onetouch-hh40v. Look for the file Firmware/DownloadImage/uprade_hh40v_all.tar.gz. Inside, you will find the file "sysupgrade/firmware-system.bin". This firmware-system.bin can be installed via TFTP recovery. The TFTP recovery also resets any U-Boot variables so it will boot normally.
  
   - Power off the device   - Power off the device