<s>
In	O
computing	O
,	O
downgrading	B-Application
refers	O
to	O
reverting	O
software	O
(	O
or	O
hardware	O
)	O
back	O
to	O
an	O
older	O
version	O
;	O
downgrade	B-Application
is	O
the	O
opposite	O
of	O
upgrade	B-General_Concept
.	O
</s>
<s>
Programs	O
may	O
need	O
to	O
be	O
downgraded	B-General_Concept
to	O
remove	O
introduced	O
bugs	B-Error_Name
,	O
restore	O
useful	O
removed	O
features	O
,	O
and	O
to	O
increase	O
speed	O
and/or	O
ease	O
of	O
use	O
.	O
</s>
<s>
An	O
example	O
of	O
a	O
downgraded	B-General_Concept
program	O
is	O
Gmax	B-Application
,	O
a	O
downgraded	B-General_Concept
version	O
of	O
3ds	B-Language
max	I-Language
used	O
by	O
professional	O
computer	O
graphics	O
artists	O
,	O
free	O
to	O
download	O
and	O
simplified	O
for	O
ease	O
of	O
use	O
.	O
</s>
<s>
The	O
term	O
"	O
downgrade	B-Application
"	O
became	O
especially	O
popularized	O
during	O
the	O
days	O
of	O
Windows	B-Application
Vista	I-Application
,	O
with	O
users	O
wanting	O
to	O
return	O
to	O
,	O
or	O
downgrade	B-Application
to	O
(	O
with	O
some	O
even	O
calling	O
it	O
an	O
"	O
upgrade	B-General_Concept
"	O
)	O
Windows	B-Application
XP	I-Application
because	O
Vista	B-Application
had	O
performance	O
and	O
familiarity	O
issues	O
.	O
</s>
