c55 dead after firmware downgrade help !!! - GSM-Forum

gonzo · 05-17-2003, 07:16

Hi,
i had an c55 v18 and started to downgrade to v14,with winswup;everything went fine 100% transmission,but postcheck failed and I could not turn on mobile anymore.Tried to upgrade to 18 with original firmware upgrade,but this one does not recognize c55 anymore,even when i press power on very often.
tried winswup v18,skipped precheck,iginition seemet to work,green background arrises,but not any further,no transmission.
can anybody help please,please

Uvedovle · 05-17-2003, 10:48

I heard you have to resolder the diode before use winswup.
I can´t help anymore.
Best regards

gonzo · 05-17-2003, 12:18

resistor is in its place,was never removed or soldiered out
hnmmmm

fontelense · 05-17-2003, 18:44

Just upgrade again to V18 or up. If the resistor is there, you should have no problems. Also check battery..

gonzo · 05-17-2003, 20:08

its a very new c55 3 weeks old,may be thats the problem,i still can not upgrade to v18 phone is dead,
please help

gonzo · 05-17-2003, 20:38

is it true that the new c55 phone hardware is not compatible with firmware v14 and less?
the only repair way is siem. service center or desolder the resistor
write bootrap with wizard 4.0 or e.g. and then run winswup,are these the only possibilties after a downgrade from v18 to v14 result --> dead phone new hardware????

05-17-2003, 07:16	#1 (permalink)
gonzo Junior Member Join Date: Mar 2003 Posts: 36 Member: 24457 Status: Offline Thanks Meter: 0	c55 dead after firmware downgrade help !!! Hi, i had an c55 v18 and started to downgrade to v14,with winswup;everything went fine 100% transmission,but postcheck failed and I could not turn on mobile anymore.Tried to upgrade to 18 with original firmware upgrade,but this one does not recognize c55 anymore,even when i press power on very often. tried winswup v18,skipped precheck,iginition seemet to work,green background arrises,but not any further,no transmission. can anybody help please,please

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05-17-2003, 10:48	#2 (permalink)
Uvedovle No Life Poster Join Date: Apr 2002 Location: South Spain Age: 41 Posts: 2,247 Member: 10905 Status: Offline Thanks Meter: 109	I heard you have to resolder the diode before use winswup. I can´t help anymore. Best regards

05-17-2003, 12:18	#3 (permalink)
gonzo Junior Member Join Date: Mar 2003 Posts: 36 Member: 24457 Status: Offline Thanks Meter: 0	resistor is in its place,was never removed or soldiered out hnmmmm

05-17-2003, 18:44	#4 (permalink)
fontelense No Life Poster Join Date: Sep 2001 Location: Portugal Age: 50 Posts: 618 Member: 6358 Status: Offline Thanks Meter: 10	Just upgrade again to V18 or up. If the resistor is there, you should have no problems. Also check battery..

05-17-2003, 20:08	#5 (permalink)
gonzo Junior Member Join Date: Mar 2003 Posts: 36 Member: 24457 Status: Offline Thanks Meter: 0	its a very new c55 3 weeks old,may be thats the problem,i still can not upgrade to v18 phone is dead, please help

05-17-2003, 20:38	#6 (permalink)
gonzo Junior Member Join Date: Mar 2003 Posts: 36 Member: 24457 Status: Offline Thanks Meter: 0	is it true that the new c55 phone hardware is not compatible with firmware v14 and less? the only repair way is siem. service center or desolder the resistor write bootrap with wizard 4.0 or e.g. and then run winswup,are these the only possibilties after a downgrade from v18 to v14 result --> dead phone new hardware????