Thanks very much for your reply hopper
managed to get it done by using an old pc, the usb to serial converter was not good at all, wasn't transferring data correctly
so a tip for anyone having problems make sure you use a pc/laptop with an rs232 connection.
Also another thing is that I have 2 boxes and on the other i was getting a version mismatch when trying to upgrade.
I found this on another forum so i am not taking credit for it at all. credits to soupdragon
QuoteDisplay MoreRight time for an update, I got much the same error message as before and have determined that the problem is that the bootloader has been upgraded in that firmware to version 1.0.7 and all other firmware is still using the 1.0.4 bootloader.
The toolbox wont let you flash a firmware if the bootloader is older than the one on the stb hence why I got the error.
My solution was to extract the 1.0.7 bootloader and patched it into a working 1.0.4 image. I used a lavatronics image and produced a firmware with a 1.0.7 loader and the lavatronics software inside. This was flashed via rs232 without any problems and I was able to boot up the box.
I then downloaded via the box the new lavatronics firmware (bootloader+ all software) via their ftp in the box and it successfully downgraded the bootloader back to 1.0.4.
I don't know if that firmware Estimadarocha posted bricked anybody elses combo box or if it was just a bad download on my part but if it has here is a link to my modified firmware with the 1.0.7 loader if it helps anybody else.
hope this helps you guys as much as it did me
cheers