<s>
Installer.app	B-Operating_System
was	O
a	O
freeware	O
software	O
installer	O
for	O
the	O
iPhone	B-Device
created	O
by	O
Nullriver	O
and	O
later	O
maintained	O
by	O
RipDev	O
,	O
first	O
released	O
in	O
summer	O
2007	O
and	O
maintained	O
until	O
summer	O
2009	O
.	O
</s>
<s>
Installer	O
allowed	O
users	O
to	O
install	O
third-party	O
applications	O
into	O
the	O
iPhone	B-Device
's	O
Applications	O
directory	O
where	O
native	O
applications	O
are	O
kept	O
.	O
</s>
<s>
Users	O
could	O
install	O
applications	O
from	O
a	O
variety	O
of	O
sources	O
(	O
over	O
Wi-Fi	O
or	O
UMTS	B-Protocol
)	O
provided	O
by	O
software	O
developers	O
or	O
directly	O
onto	O
the	O
iPhone	B-Device
without	O
requiring	O
a	O
computer	O
.	O
</s>
<s>
In	O
June	O
2009	O
,	O
RipDev	O
dropped	O
support	O
for	O
Installer	O
in	O
favor	O
of	O
developing	O
a	O
different	O
package	B-Application
manager	I-Application
and	O
installer	O
named	O
Icy	B-Operating_System
.	O
</s>
<s>
All	O
of	O
the	O
applications	O
compiled	O
for	O
iPhone	B-Operating_System
OS	I-Operating_System
1.2	O
and	O
below	O
were	O
no	O
longer	O
able	O
to	O
run	O
on	O
2.0	O
.	O
</s>
<s>
Therefore	O
,	O
Installer	O
3	O
was	O
n't	O
available	O
for	O
2.0	O
and	O
the	O
vast	O
majority	O
of	O
users	O
switched	O
to	O
Cydia	B-Device
.	O
</s>
<s>
At	O
that	O
time	O
,	O
RiPDev	O
(	O
Russian	O
iPhone	B-Device
Development	O
)	O
took	O
over	O
the	O
Installer	O
project	O
and	O
started	O
developing	O
Installer	O
4.0	O
.	O
</s>
<s>
Installer	O
4.0	O
did	O
not	O
gain	O
as	O
much	O
popularity	O
as	O
Installer	O
3.0	O
because	O
most	O
of	O
the	O
jailbreak	O
users	O
had	O
become	O
accustomed	O
to	O
using	O
Cydia	B-Device
.	O
</s>
<s>
In	O
May	O
2011	O
,	O
a	O
team	O
of	O
developers	O
called	O
Infini-Dev	O
recreated	O
Installer	O
4	O
so	O
that	O
it	O
could	O
be	O
run	O
on	O
iOS	B-Operating_System
4	O
and	O
above	O
,	O
although	O
the	O
main	O
current	O
repositories	O
are	O
only	O
compatible	O
with	O
Cydia	B-Device
and	O
no	O
longer	O
compatible	O
with	O
Installer	O
.	O
</s>
<s>
RiPDev	O
has	O
put	O
their	O
old	O
Installer	O
repo	O
back	O
online	O
since	O
Infini-Dev	O
released	O
Installer	O
,	O
and	O
there	O
are	O
also	O
some	O
other	O
repos	O
like	O
Greek-iPhone	O
who	O
offer	O
up	O
to	O
date	O
packages	O
for	O
Installer	O
.	O
</s>
