5120 Questions regarding Flashing

[SomeOne]

Hi I'm new to the forums and I was wondering what type of hacks can be done to a nokia 5120 cellphone.

I've heard that ESN can't be changed because of a problem with the checksum, is this true?

Also, a friend of mine has the same model as mine but with a newer software (4.00), is it posible to upgrade my phone flashing it, and what type of software do I need?

Ringtones and Logos are not supported for this phone but a friend told me that they can be changed by tweaking the EEPROM data, is this true?

I now most of this questions may sound very simple, but any information will help.

Thanks in advanced

[SomeOne]

Up to what version does the nokia 5120 goes? I just saw a web page that claims to have cables for version v6.08 for sale.

Does anyone have a full flash with this version? What changes are made between versions?

[phonedudes]

Read through the posts in the 'Nokia TDMA, CDMA Phones'
and you will find out all the info to your questions.

If you want new features buy a new phone.. You will not be able upgrade your software.

[guard]

I have asoc2, but don't reset 8260v6.2,5125v7.00,5165v7.01..etc.. to *3001#12345#,please reply, I need solve this. Thanks a lot.. Franky.