id just like to know how it works!
especially why flashing the phone doesnt do the job and why one needs extra boxes to write software to the phone so it gets unlocked?
how many different types of memory are there in a phone amd where is this lock stored?
thanks a lot!

lock is stored in gdfs, but you can let the fw not check that lock by patch unlocking it...
it bassicly goes like this

<this is the part of the code where it checks the sim>
<here it will be going to exucute another code>

if the sim is correct it whil move on to A (continue start the phone)
if not it wil go to B (say bad sim ore something)

by patch unlocking you change the B to A so its always A and you can continue start the phone although the sim doesnt match the lock

thanks but why cant i just rewrite the gdfs after all there's an option in setools for that???

Because your GDFS is unique, and if you do try to write another GDFS, the chances of your phone successfully booting are less than 1%

lots of thing are stored into your gdfs
so does the imei and your simlock, but there both encrypted
this means you cant change them unless you know the encrypten
if you want to flash a gdfs of a unlocked phone the imei wont be the same as the imei on you otp and this makes your phone not starting up....

however the imei is not 100% unique so you have a verry tiny change of having the gdfs of another phone working on yours... but thats negligible

so theres some other system or memory besides gdfs that checks the uniqueness of my gdfs??

what is it doesnt anybody know?

somebody answer this please!

The erom controls gdfs ans his functions, if erom detect that gdfs are damage or detect gdfs from another phones , block the phone in all ways so then we see the infrared blink on db2020 phones.
in some db2020 cid 49/51 is possible repair erom with an erom upgrade.

B.R

and erom is read only memory right son only physical abuse would help here??

yes you need to reball or change ic flash chip and the do a empty borad procedure with setool box.

but there are still some guys here talking about erom flashing simply via setools or some other app without opening the phones cover!
loock here for example http://www.esato.com/board/viewtopic.php?topic=150157
am i seeing something wrong?

yes but you need profesional se tools like a service cable,
i have messed up my phones alot of thimes and managed to get them alive with my service cable

lol !

do i have to use unlock patch everytine i flash my phone

i think so

If you unlocked it via patch, you do

thanks guys

how the hell can one reflash an eprom or worse erom??? please someone!!

I use FAR+SEFP to flash EROM, it's a special address that the SEFP program can access. It warns you that it's flashing EROM, i just forgot the addresses

come on knock your barins off, and im not asking about software doing it im asking how its possible cos erom is read only memory?? please someone answer becouse i dont want to read 100 technical books just to find the answer im loocking for, thanks?

in db2010 phones you can read/write erom in db2020 phones and up you can try to upgrade if phone are cid 49/51 , in db2010 or empty boards you can flash e rom with no problems if you have a professional tool like setool box or you can do it with a service cable in some models.

B.R