K750 no network - GSM-Forum

petar2258 · 12-22-2005, 14:14

When switched on, no network. After master reset(reset settings) network is ok. If phone is switched off and then switched on, again no network and this procedure must be repeated. I flashed with different versions, and used method of Microstar but no change.

nafg · 12-22-2005, 17:24

flash full gdfs and will be fine again

petar2258 · 12-23-2005, 14:36

at time of writing first post, i flashed full gdfs and many other things but no result

petar2258 · 12-24-2005, 10:03

with R1AA008 network is ok
...but not for long, may be some hardware problem, and we will give other phone to customer
SE not think much when make this model

HAKIM · 03-30-2006, 16:11

Does anyone have solution for this problem.
I even changed to W800i but same,
When power on off no network, when remove batt no network.

BR,
HAKIM

nafg · 03-30-2006, 16:47

If you put full gdfs and flash arm and raw fs of w800 and still no network i think must be a hardware problem and you can find the solution in hardware section of the forum

br

nafg

JohnGust · 03-30-2006, 16:58

Guys, there's a good reason as to why each phone is radio calibrated in factory and that's because not all components are EXACTLY the same (small changes). "Compensation" for those changes are stored in GDFS and if you take one phone's GDFS and put into another phone it may work but there's no guarantee. It could be that you are at the edge for some compensation values.

Do you have any other K750 GDFS file to try with?

HAKIM · 04-02-2006, 16:02

But when make full reset or normal reset the phone works normal.
This problem started when crash playing a game.
I ready tryed everthing all flashes I found and GDFS.
But no luck.
Is there a way to make it empty board, erase everthing from the phone, and than reflash it with last version>

BR,
HAKIM

.::Unlocker.:: · 04-03-2006, 05:04

i think it's hardware problem if u have already tried flashing it...

nafg · 04-03-2006, 16:51

This solution is from a guy in forum i dont remenber his name so escuse me for not put your name here i just have the solution in a note pad

it work for me

1. Select exact phone type - K750i, K750c or D750i.
2. Start the phone in recovery mode (via Force RSA recovery mode, CID=36).
3. Repair certificate and turn off the phone.
4. Reattach the phone in normal mode. It should be detected as brown CID36.
5. Unlock RSA incase the Repair EROM disable
6. Repair EROM.
7. Flash K750 full GDFS file.
8. Turn Off Phone
9. Reattach the phone.
10. Convert the phone to red CID36 using the special red CID36 EROM file: http://forum.gsmhosting.com/vbb/att...achmentid=26828
11. Turn off the phone and reattach it. It should be detected as red CID36 now.
12. Flash main firmware.
13. Unlock RSA and reattach.
14. Flash raw FS.
15. Upload singed archive (select the file example:K750i_CXC125953_APAC1_R1J002_Red36.ck75sfa
16. Reattach it again.
17. Customize FS by one of the built-in customizations.
18. Shutdown FS.
19. Reattach Again
20. In Tab "Security RSA" tick "Format Security zone" and "Recalculate CRCs" then "write to security zone"
21. If this show "ERROR: Could not initialize GDFS access"
22. Then In Tab "Locks" Convert to Brown and Use Direct Unlock
23. Put it sim card and wait for few seconds the Please Wait will run for short while and your phone is ready to use.

br
NAFG

12-22-2005, 14:14	#1 (permalink)
petar2258 Freak Poster Join Date: Jul 2004 Location: Burgas, Bulgaria Age: 55 Posts: 254 Member: 75528 Status: Offline Thanks Meter: 5	K750 no network When switched on, no network. After master reset(reset settings) network is ok. If phone is switched off and then switched on, again no network and this procedure must be repeated. I flashed with different versions, and used method of Microstar but no change.

12-24-2005, 10:03	#4 (permalink)
petar2258 Freak Poster Join Date: Jul 2004 Location: Burgas, Bulgaria Age: 55 Posts: 254 Member: 75528 Status: Offline Thanks Meter: 5	Problem solved! with R1AA008 network is ok ...but not for long, may be some hardware problem, and we will give other phone to customer SE not think much when make this model Last edited by petar2258; 12-24-2005 at 12:10.

03-30-2006, 16:11	#5 (permalink)
HAKIM Freak Poster Join Date: Jun 2002 Location: Belgium Age: 44 Posts: 123 Member: 12671 Status: Offline Thanks Meter: 3	Same problem Does anyone have solution for this problem. I even changed to W800i but same, When power on off no network, when remove batt no network. BR, HAKIM

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12-22-2005, 17:24	#2 (permalink)
nafg No Life Poster Join Date: Nov 2005 Location: CHILE Posts: 906 Member: 196727 Status: Offline Thanks Meter: 419	flash full gdfs and will be fine again

12-23-2005, 14:36	#3 (permalink)
petar2258 Freak Poster Join Date: Jul 2004 Location: Burgas, Bulgaria Age: 55 Posts: 254 Member: 75528 Status: Offline Thanks Meter: 5	at time of writing first post, i flashed full gdfs and many other things but no result

03-30-2006, 16:47	#6 (permalink)
nafg No Life Poster Join Date: Nov 2005 Location: CHILE Posts: 906 Member: 196727 Status: Offline Thanks Meter: 419	If you put full gdfs and flash arm and raw fs of w800 and still no network i think must be a hardware problem and you can find the solution in hardware section of the forum br nafg

03-30-2006, 16:58	#7 (permalink)
JohnGust Insane Poster Join Date: Feb 2006 Posts: 63 Member: 235878 Status: Offline Thanks Meter: 0	Guys, there's a good reason as to why each phone is radio calibrated in factory and that's because not all components are EXACTLY the same (small changes). "Compensation" for those changes are stored in GDFS and if you take one phone's GDFS and put into another phone it may work but there's no guarantee. It could be that you are at the edge for some compensation values. Do you have any other K750 GDFS file to try with?

04-02-2006, 16:02	#8 (permalink)
HAKIM Freak Poster Join Date: Jun 2002 Location: Belgium Age: 44 Posts: 123 Member: 12671 Status: Offline Thanks Meter: 3	But when make full reset or normal reset the phone works normal. This problem started when crash playing a game. I ready tryed everthing all flashes I found and GDFS. But no luck. Is there a way to make it empty board, erase everthing from the phone, and than reflash it with last version> BR, HAKIM

04-03-2006, 05:04	#9 (permalink)
.::Unlocker.:: Banned Join Date: Oct 2005 Location: inside forum Posts: 746 Member: 193336 Status: Offline Thanks Meter: 9	i think it's hardware problem if u have already tried flashing it...

04-03-2006, 16:51	#10 (permalink)
nafg No Life Poster Join Date: Nov 2005 Location: CHILE Posts: 906 Member: 196727 Status: Offline Thanks Meter: 419	This solution is from a guy in forum i dont remenber his name so escuse me for not put your name here i just have the solution in a note pad it work for me 1. Select exact phone type - K750i, K750c or D750i. 2. Start the phone in recovery mode (via Force RSA recovery mode, CID=36). 3. Repair certificate and turn off the phone. 4. Reattach the phone in normal mode. It should be detected as brown CID36. 5. Unlock RSA incase the Repair EROM disable 6. Repair EROM. 7. Flash K750 full GDFS file. 8. Turn Off Phone 9. Reattach the phone. 10. Convert the phone to red CID36 using the special red CID36 EROM file: http://forum.gsmhosting.com/vbb/att...achmentid=26828 11. Turn off the phone and reattach it. It should be detected as red CID36 now. 12. Flash main firmware. 13. Unlock RSA and reattach. 14. Flash raw FS. 15. Upload singed archive (select the file example:K750i_CXC125953_APAC1_R1J002_Red36.ck75sfa 16. Reattach it again. 17. Customize FS by one of the built-in customizations. 18. Shutdown FS. 19. Reattach Again 20. In Tab "Security RSA" tick "Format Security zone" and "Recalculate CRCs" then "write to security zone" 21. If this show "ERROR: Could not initialize GDFS access" 22. Then In Tab "Locks" Convert to Brown and Use Direct Unlock 23. Put it sim card and wait for few seconds the Please Wait will run for short while and your phone is ready to use. br NAFG