Theoretically, practically, virtually unreliable

The Philips BDP 5500 is a true value for Pops. For 100 you get nowhere so many supported formats, he also play on the built-in WLAN CAN. If he want. Reports, there are enough.
It was received with a rather old version firmware, an update via WLAN was not possible because he did not find the WLAN of my D-Link router. After an update via USB with the files from the Philips support page the WLAN has been detected.
So far so good, but accepted the BDP 5500 is not wireless password. I did it a dozen times to enter before it worked. With the included remote control, I would probably not be able to enter the password once, they can be regarded as unreasonable. I used the remote control instead of my Philips TV via EasyLink.
Eventually, he then took the password. The configuration then faded away correctly automatically.

In attempting to DLNA server access my notebook, the device then hung up. I had to take the power because he was unresponsive. After rebooting, the wireless data were gone! ... This occurs about 3 out of 10 times when turning. Whether power off, standby, power-up Fast or normal.

If DLNA is running, it actually accepted all my video files that my TV can not play (all .mkv).
However, I had already repeatedly crashes during the movie by using break. Fast forward is possible up to 32x via WLAN, although there are differences here in the DLNA server used. Per Windows Media Player or Windows 7 I have integrated a picture during fast-forwarding, as well as the terminations to break. Philips itself recommends Twonky Media Server. Quote: "We have had good experiences." Although Twonky does not crash, this one has the fast forward no picture and no indication of where you are. Coils he does anyway.

My USB HDD works on both USB ports properly (Fujitsu Siemens, 2.5 "). There, the play works most reliably.

The DVD playback is super. No reading noise during the movie, super upscaling.

Blueray playback is liquid at some titles only possible with 24p, otherwise the video stops every 5-10 seconds. Therefore, I have run him permanently to 1080p / 24. 24p is possible only with 1080p. Again, no problems with the copy protection, no long Einlesezeiten, no noise during playback.

Visually, it looks better than you see it in the pictures.
The power cord is really narrow.

Conclusion: The player is objectively the best in the field to 110 when the software would be developed.
The Philips Support Forum overflowing with software errors threads, this concerns all Blueray player.
I still hope for an update or a response from the Support Forum if soon a new update appears, otherwise I will but send him back again. If no WLAN function can be used, I recommend the BDP 3380 or in general to use a cable if possible. The 3380er I had dabbled wired to the router and as I had not encountered here error.
Due to the very changeable firmware occur (I have the BDP 5500 for more than 2 weeks), it would of course be possible that some of the mistakes that I have experienced can be very different in others. At least I'm assuming ...