Latest patch for your receiver is as below.
TM5000 Super 152p patch.
Fixed RS232 with null modem cable use one master > up to 8 slaves
in menus option select to master in slave also select master
if more then one select slave + any numbers of slaves
Phantompatch-TM5300D_5200D_SUPER_152p_06-10-11.
Be aware I installed this on my Tm 5400 super+ and no softcams would open.
Rolled back to Patch 149,no issues with latest softcam, opened for all providers mentioned in the text.
Hope this helps.