T630 ver R7A011 no network after downgrade to R6C005

[joeyew]

My T630 which is version R7A011 have no network after downgrade to R6C005. What Should i do to solve this problem, help!!!! Pls...

[joeyew]

i had do this step:

1.Reflash MCU : t630_125797_r6c005_asianlatin3_disable_otp.bis and MODEM : t630_125810_r6c005_modem.bih
2.flash gdfs in gdfs partt630_r5a_102260_tmobile.big
3.Init_sec_blokc and write ORIGINAL imei.

but still same, any idea? is it because of R7A011 can not be downgrade? pls help!!!

[hooi76]

i'm having the same problem like u too, i downgrade to R4C003 and now the phone signal bar up then down the up then down, i couldn't make call too. Have you solve your problem yet?

[joeyew]

Not Yet, waiting for help! I think must reflash to R7A011 ver, but i don't have it, so poor! BTW, i have R7A011 in AVR and ARM, do you need it?

[evan_silbert]

Maybe the phone was patched before for IMEI change, and after you flashed it, the IMEI is back to normal. The normal IMEI might be barred.

[gbluez]

Yes, Evan is right. Do all your steps, dont tick "protect sa...." It just the matter with, usually, gdfs or modem.

Have a nice day

[hooi76]

what do u mean don't tick protest sa?
I already click the RSA (KEY) button and the phone is dead, so i downgrade to R4C003 and the phone can not make calls. signal bar drops Every 5 secs.

Help

And yes i need the AVR ARM flash of R7A011_CHINA_2, If possible.

Thanks in advance

[hooi76]

I have done it!!!!!!!!!

i've downgrade it successfully just like u mentioned Mr. GBLUEZ.

UNTICK THE PROTECT SA WHEN FLASHING GDFS.

Steps that i made is like this

1. open t630_125806_r4c003_china.bis

2. open t630_r4c003_modem.bih

3. open t630_r4c003_china_gdfs.big

4. Untick the PROTECTION SA WHEN FLASHING GDFS.

5. Flash the MCU

6. Flash the Modem

7 Flash the GDFS. (After flashing this GDFS, IMEI will be changed)

8. Init SecBlk (Change Back to the imei at the back of the sticker.)

9. Init Locks.

10. Done

but after flashing this, only 1800 mhz works, not works for 900mhz ;(

[gbluez]

congratulation.
But maybe you got "band locked". Just play arround with gdfs, locks, and sa.
Dont worry. Its save. Dead by software - Rised by software.

Regards

[hooi76]

thanks for the advice.

but i really don't understand, i flash another version R6C005 t630_125797_R6C005_AsianLatin3_disable_otp.bis , t630_125802_R6C005_Modem.bih , T630_big_gdfs.big , and the phone still the same problem, works on 1800mhz, but not works on 900mhz. Why?

Although the signal bar is FULL, but it won't get connected when making calls (900mhz).

you have enabled OTP imei

[gbluez]

are u sure b4 down grade it the 900mhz just fine? Try with other mcu / modem yet? It's stange. Try all the s/w first. Don't blame the h/w.

regards

[evan_silbert]

Or connect to DIV and set for T630 and press unlock. Bandlock will be fixed.
Or connect to Cruiser/Fighter and Rebild Security I. Bandlocked will be fixed.

If after fixing bandlock, still no 900, phone is barred from that network, you have re-enabled OTP IMEI.

[hooi76]

Originally Posted by evan_silbert

Or connect to DIV and set for T630 and press unlock. Bandlock will be fixed.
Or connect to Cruiser/Fighter and Rebild Security I. Bandlocked will be fixed.

If after fixing bandlock, still no 900, phone is barred from that network, you have re-enabled OTP IMEI.

How to re-enabled OTP IMEI?

In Malaysia, there is no SIM LOCK.

[joeyew]

Originally Posted by hooi76

And yes i need the AVR ARM flash of R7A011_CHINA_2, If possible.

I do not have CHINA_2, only EU1. How can i send to you, may i have your email? BTW, i am in the same situation with you now, only can make call with using 1800mhz network, but not in 900mhz. Pls post the result if you can do it, Thank in advance!