It should be possible to update the firmware on E1524 devices. You just need to make sure that the device is not "sleeping" when you start the update process: press any button on the remote or remove/reinsert battery just before/after clicking the "Update Firmware" button. Repeat, retry different things, keep calm.
I suggest to ask for help on the other thread, since that topic was created to help folks with firmware update issues. Be sure to include details with what you tried and what went wrong; don't just say "it does not work", be specific and don't worry, you're amongst friends here; we'll make it work 
