xyz pro 1 w firmware version 1.3.8 error code 0040

Hi all I am a newby to this forum I  am retired with time on my hands and I do have some history in building my own printers so I know the problems we all find,   but I have recently had an xyz pro 1 printer given, I was given it because the previous owner had been a bit heavy handed with the extruder module which I managed to repair and start using the printer and I must say I thought it was very good until I started to print 2 maximum sized models at one session when the file size was too large for the sd card which gave me the first error.  Upon investigating the sd card properties 2.5 Gb I proceeded to upgrade to an 8 Gb class 10 card.  some time during this adventure I LOST the metal SD card retaining clip, I spent several hours trying to find it using everything I had including spy hole camera but alass it was not to be found and so i purchased a new card holder hopeing that the clip would fit the existing base but no such luck meaning that I had to desolder the original and fit the complete new unit then fit the new 8Gb card . Since then When I set the extruder to auto heat in the settings it never rises higher than 92 degrees and the minute I send a file to print
error code 0040 happens. My first thoughts was I had not done a good job soldering the new card holder but upon further inspection with a microscope I think that I did do a good job, all pins are soldered inline and central with the motherboard pads just like a professional. can someone send me some information to help fix this problem

I have formed the opinion that I must have a corrupt firmware can anyone tel me Where I can download the latest version fo a davinci xyz pro 1w printer