<s>
The	O
TF5800PVR	B-Device
and	O
similar	O
TF5800PVRt	B-Device
is	O
the	O
UK	O
Freeview	B-Device
version	O
of	O
Topfield	O
's	O
TF5000PVRt	O
,	O
which	O
is	O
a	O
personal	B-Application
video	I-Application
recorder	I-Application
(	O
PVR	O
)	O
with	O
twin	O
tuners	B-Device
;	O
it	O
is	O
possible	O
to	O
record	O
two	O
programs	O
and	O
view	O
a	O
third	O
so	O
long	O
as	O
all	O
programs	O
do	O
not	O
use	O
more	O
than	O
two	O
multiplexes	B-Device
.	O
</s>
<s>
Firmware	B-Application
upgrades	O
were	O
distributed	O
over-the-air	O
using	O
the	O
normal	O
FreeView	B-Device
distribution	O
method	O
,	O
and	O
are	O
also	O
available	O
for	O
Internet	O
download	O
.	O
</s>
<s>
Files	O
(	O
TV	O
programmes	O
,	O
MP3	B-Application
files	I-Application
,	O
and	O
operating	O
files	O
)	O
can	O
be	O
transferred	O
over	O
USB	B-Protocol
between	O
the	O
PVR	O
and	O
a	O
computer	O
.	O
</s>
<s>
The	O
TF5800PVR[t]	O
was	O
replaced	O
by	O
the	O
TF5810PVRt	B-Device
with	O
similar	O
functionality	O
,	O
but	O
which	O
also	O
supports	O
HDMI	B-Protocol
output	O
(	O
from	O
standard	O
,	O
but	O
not	O
HD	O
,	O
broadcastsreception	O
of	O
Freeview	B-Device
HD	O
channels	O
requires	O
a	O
DVB-T2	B-Protocol
receiver	O
,	O
which	O
the	O
TF5810PVRt	B-Device
is	O
not	O
)	O
.	O
</s>
<s>
The	O
latest	O
factory	O
firmware	B-Application
versions	O
for	O
both	O
models	O
incorporate	O
some	O
features	O
equivalent	O
to	O
Freeview+	O
.	O
</s>
<s>
The	O
USB	B-Protocol
2.0	O
socket	O
allows	O
files	O
to	O
be	O
transported	O
both	O
ways	O
between	O
the	O
device	O
and	O
a	O
computer	O
running	O
transfer	O
software	O
written	O
for	O
this	O
purpose	O
.	O
</s>
<s>
Microsoft	B-Application
Windows	I-Application
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
,	O
and	O
some	O
versions	O
of	O
Linux/Unix	O
are	O
supported	O
.	O
</s>
<s>
to	O
load	O
extended	O
14-day	O
EPG	B-Device
data	O
to	O
the	O
PVR	O
,	O
in	O
place	O
of	O
the	O
standard	O
broadcast	O
7-day	O
Freeview	B-Device
EPG	B-Device
.	O
</s>
<s>
USB	B-Protocol
file	O
transfer	O
is	O
rather	O
slow	O
.	O
</s>
<s>
It	O
can	O
be	O
accelerated	O
to	O
some	O
extent	O
by	O
using	O
the	O
transfer	O
software	O
's	O
Turbo	O
mode	O
and	O
by	O
using	O
TAPs	O
which	O
eliminate	O
unnecessary	O
handshaking	B-Protocol
signals	O
.	O
</s>
<s>
The	O
functionality	O
of	O
the	O
TF5800PVR	B-Device
can	O
be	O
enhanced	O
via	O
the	O
use	O
of	O
Topfield	O
Application	O
Programs	O
(	O
TAP	O
)	O
.	O
</s>
<s>
TAPs	O
are	O
C	B-Language
programs	I-Language
,	O
developed	O
by	O
users	O
for	O
users	O
.	O
</s>
<s>
They	O
can	O
be	O
developed	O
under	O
Microsoft	B-Application
Windows	I-Application
using	O
a	O
Topfield	O
platform	O
cross-compiler	O
(	O
GCC	B-Application
for	O
TAP	O
)	O
or	O
the	O
Cygwin	B-Language
GCC	B-Application
compiler	I-Application
.	O
</s>
<s>
TAPs	O
are	O
applications	O
written	O
using	O
an	O
API	B-General_Concept
available	O
free	O
from	O
the	O
manufacturer	O
.	O
</s>
<s>
The	O
API	B-General_Concept
provides	O
access	O
to	O
almost	O
all	O
features	O
of	O
the	O
device	O
:	O
TAPs	O
can	O
access	O
EPG	B-Device
information	O
,	O
change	O
channels	O
,	O
start	O
or	O
stop	O
a	O
recording	O
session	O
,	O
change	O
pre-set	O
recording	O
timers	O
,	O
write	O
text	O
and	O
draw	O
graphics	O
to	O
the	O
screen	O
,	O
and	O
react	O
to	O
buttons	O
pressed	O
on	O
the	O
remote	O
control	O
.	O
</s>
<s>
It	O
is	O
possible	O
to	O
write	O
a	O
useful	O
program	O
,	O
adding	O
useful	O
functionality	O
,	O
in	O
ten	O
lines	O
of	O
C	B-Language
code	O
.	O
</s>
<s>
Firmware	B-Application
can	O
be	O
downloaded	O
to	O
a	O
computer	O
and	O
transferred	O
via	O
USB	B-Protocol
to	O
the	O
PVR	O
.	O
</s>
<s>
Unlike	O
the	O
majority	O
of	O
electronics	O
devices	O
,	O
many	O
users	O
do	O
not	O
recommend	O
always	O
updating	O
to	O
the	O
manufacturer	O
's	O
latest	O
firmware	B-Application
,	O
instead	O
recommending	O
versions	O
of	O
firmware	B-Application
that	O
have	O
been	O
debugged	O
and	O
enhanced	O
by	O
users	O
.	O
</s>
<s>
the	O
Toppy	O
website	O
recommended	O
TF5800PVR/PVRt	O
firmware	B-Application
5.13.65T	O
,	O
a	O
modified	O
version	O
of	O
August	O
2007	O
factory	O
firmware	B-Application
5.13.65	O
.	O
</s>
<s>
The	O
last	O
firmware	B-Application
released	O
by	O
the	O
manufacturer	O
was	O
the	O
July	O
2008	O
5.14.09Plus	O
.	O
</s>
<s>
Different	O
releases	O
apply	O
to	O
the	O
TF5810PVRt	B-Device
.	O
</s>
<s>
Patches	O
to	O
the	O
firmware	B-Application
can	O
be	O
downloaded	O
to	O
a	O
computer	O
and	O
transferred	O
to	O
the	O
PVR	O
.	O
</s>
