<s>
The	O
Sendo	B-Language
X	I-Language
was	O
Sendo	O
's	O
first	O
Series	B-Language
60	I-Language
based	O
"	O
high-end	O
"	O
phone	O
,	O
developed	O
after	O
Sendo	O
switched	O
from	O
the	O
Microsoft	O
to	O
Symbian	O
/	O
Series	B-Language
60	I-Language
platforms	I-Language
.	O
</s>
<s>
Among	O
the	O
unique	O
features	O
of	O
the	O
Sendo	B-Language
X	I-Language
,	O
one	O
was	O
the	O
ability	O
for	O
users	O
to	O
download	O
new	O
firmware	O
from	O
Sendo	O
's	O
website	O
and	O
upgrade	O
the	O
phone	O
from	O
their	O
home	O
computer	O
.	O
</s>
<s>
Sendo	O
shunted	O
multiple	O
times	O
the	O
Sendo	B-Operating_System
Z100	I-Operating_System
to	O
new	O
release	O
dates	O
,	O
and	O
after	O
cancelling	O
the	O
phone	O
in	O
November	O
2002	O
they	O
announced	O
to	O
switch	O
from	O
Microsoft	O
's	O
Smartphone	B-Operating_System
2002	I-Operating_System
operating	B-General_Concept
system	I-General_Concept
to	O
the	O
Series	B-Language
60	I-Language
platform	I-Language
.	O
</s>
<s>
This	O
decision	O
resulted	O
in	O
the	O
2004Q2	O
release	O
of	O
the	O
Sendo	B-Language
X	I-Language
.	O
</s>
