On Friday 05 November 2010 at 18:48, Antony Stone wrote:
I don't know how to find out the PBL version from the machine itself
See page 153 of the E3 user guide, still available for download from http://www.amstrad.com/support
ftp://ftp.amstrad.co.uk/e3_userguide_web_v1.zip
I notice that in reference to your original question, page 26 of that guide also says "If you wish to ... restore the original factory settings, contact Amserve Support (see page 29) who will advise you of the procedure."
I strongly suspect Amserve Support 0906 6816816 or support@amserve.ltd.uk will no longer do this, however it does at least confirm that there's a way of doing it from the keyboard alone.
Therefore it is possible that someone still knows the answer to your question.
Sorry I can't be of any more help.
Antony.