159243-8900 ZEXEL 9 421 612 224 BOSCH COILED SPRING 9421612224 1592438900 1913199309

Installation Instructions
Using the PC, copy the file called amupdate.img to the USB stick. Make sure that the file is located directly on the USB stick and not saved in any directory on the USB stick.
Take note of the current Kernel version of the unit (if possible).
Disconnect the supply power to the unit to be upgraded.
Insert the USB stick at the back of the unit.
Reconnect the supply power to the unit and observe brief block of text message on the display, as the new kernel is being uploaded and installed. (This message is only shown for a few seconds.)
Wait for the unit to start up fully. Dismiss the USB Storage form, if shown, and remove the USB stick from the unit.
Check the Kernel version and verify that Kernel version is "180820".