920 receiver, manufacture 1999 day246
Firmware 6D
X4 in place before Jan 1.
originally 4 step converted with approx 4900 channels,
tdt was at 1714 (maybe 1712) before the conversion (didn't check after).
Channel count after conversion about 5000.
Everything appeared okay for about 24 hours. All X4 channels and guide
were working.
Then Maps became corrupted while changing channels and a MR was performed.
So essentially a MR equals the 7 step conversion (not sure as I didn't tune using the channels
suggested by Skyvision, but instead G9-1 on the 105 position and manual tune)
After MR and reload of maps all X4 channels okay. Guide works well.
Channel count is 998 and TDT now 979.
Other 920 year 1999 also converted uisng 4 step. Also FW 6D.
Same TDT and channels count before conversion. I had done a MR on this receiver Dec 30, due to missing CF, CG tiles.
After that all generics were loaded and in memory. Manually loaded X4 before Jan 1.
Same thing happened while changing channels after ~ 20 hours. Lock up and corrupted / missing maps
After MR all working again.
Post MR and reload X4 maps, Channels at 996, before I swapped in the second 920.
Not currently plugged in to check, but the receivers act identically and I had checked channel coutn before swapping in other 920.