What does partial flash mean

[Matique2k]

What can be done with it and how does it work Ive searched the forum but cant find data.

[Mobileman_hu]

Sorry, but if you don't know what is partial flash, or flashing, you don't need to use it!

[Dave.W]

try nFree forums mate :)
or maybe gsmprogramming section at top of the forum list

[Matique2k]

cheers Dave

[Allen]

@Matique2k

This has been discussed way back 2 years ago. Partial Flashing for your info mate is used to unlock new firmware DCT-3 phones an example of this is the NSE-1 5.30 cannot be unlocked using NOKIATOOL by PRO alone, so you need a PARTIAL FLASH to be able to unlock it.. a partial is sometimes a 64Kb patched from MCU where the security region resides (0250000) this 00250000 address overrides the EEPROM security check (correct me mates f i am wrong).

Nowadays PARTIAL flashing is no longer needed after FAID checks has been finally cracked, a long discussion if we are to speak about the importance of FAID in unlocking but just for a glimpse FAID also updates whole MCU and PPM checks with regards to MSID...

There are many tools to unlock DCT-3 phone found on the net, direct unlocking i mean.. so you will be not needing a partial flash anymore.


More power!!! :)

[Dave.W]

that is not quite correct..
partial flash is always 64Kb
all address' in Nokia firmware are cross referenced.

the MCU region has somewhere (usually around 260000) two address' which will cause the phone to check lock status

sp lock data is actually stored as a block in the eeprom, but that block is looked at by the MCU when the phone is starting up.
if you have valid lock data-and the sim is from the wrong network, you will get "sim not accepted".

so the address' in that section of MCU can be changed, now the phone will fail to see any lock data :)

partial flash is just to read out the area which was edited and upload in the net. others can now patch their phones firmware to unlock.


FAId has nothing to do with unlocking, or even in repair of MCU, PPM checksums..
FAId is built around those checksums.
that is why flashing MCU or PPM files with different checksums to the original causes the FAId to be incorrect- your phone gets no signal..

[dmac]

@Dave.W ... @Allen

nice info mates,
is there anywhere i can read on this whole technical jargon, im familure with it all, but id like to get a more detailed description on the whole area of the FAID , MCU, PPM languages, and checksums etc...

is there any sites or even books (i doubt) on the subject.

thank you.

dmac

[Dave.W]

@dmac; i reply u on nfree less than 5 mins ago mate ;)
br

[Allen]

@Dave.W

Exactly you cleared it up... thanks:)