trying to downgrade using tiny umbrella & error "20" - GSM-Forum

persianuser · 08-11-2011, 13:26

hi:
i have an iphone 4 with ios 4.3.5 that has backup of 4.2.1 & 4.3.3
i opened tinyumbrella started tss server then opened itunes & tried to restore to
4.3.3 or 4.2.1 ... but every time i get unknown error occured (20)
am i doing right ?
is there anything else to do?
why that error appears?

optus · 08-11-2011, 15:21

for that error you can get solution here Iphone Error Collection With Solution » Unlock iPhone

persianuser · 08-11-2011, 16:05

tnx but its something wrong with tinyumbrella ..everytime i try to downgrade this appears

mxkey lover · 08-11-2011, 18:38

I also faced this problem but i fixed it by putting the device in DFU mode
BR

persianuser · 08-11-2011, 20:28

successfully downgraded to 4.2.1.
but!! it stays on black/blank screen,itunes says its on recovery mode & i have to restore it to be usable.
tried tiny umbrella & fixrecovery for 4.2.1 but no luck !!
how can i get it out of this condition?

badsha007 · 08-11-2011, 22:27

u change host file and restore same version 2 time.....exitrecovery tinyumbrella.....

persianuser · 08-12-2011, 09:52

yes i did.& what can i do?
everytime i use exit recovery/fix recovery phone stuck's on greenpoison black screen(3 lines of command unable to find fs_mount...etc)

persianuser · 08-12-2011, 11:17

Solved by just boot tethered rightnow

persianuser · 08-12-2011, 11:19

BUT I HAVE TO DO IT EVERYTIME PHONE GOES ON N OFF.other wise it will be black
ps its on 4.3.3 now

manish.kalra · 08-12-2011, 11:22

how to downgarad iphone 4 4.3.5.. i have also ...

08-11-2011, 13:26	#1 (permalink)
persianuser No Life Poster Join Date: May 2007 Posts: 520 Member: 516318 Status: Offline Thanks Meter: 27	trying to downgrade using tiny umbrella & error "20" hi: i have an iphone 4 with ios 4.3.5 that has backup of 4.2.1 & 4.3.3 i opened tinyumbrella started tss server then opened itunes & tried to restore to 4.3.3 or 4.2.1 ... but every time i get unknown error occured (20) am i doing right ? is there anything else to do? why that error appears?

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08-11-2011, 15:21	#2 (permalink)
optus Freak Poster Join Date: Mar 2011 Posts: 268 Member: 1528549 Status: Offline Thanks Meter: 32	for that error you can get solution here Iphone Error Collection With Solution » Unlock iPhone

08-11-2011, 16:05	#3 (permalink)
persianuser No Life Poster Join Date: May 2007 Posts: 520 Member: 516318 Status: Offline Thanks Meter: 27	tnx but its something wrong with tinyumbrella ..everytime i try to downgrade this appears

08-11-2011, 18:38	#4 (permalink)
mxkey lover Freak Poster Join Date: Jan 2010 Location: iraq Posts: 172 Member: 1212320 Status: Offline Thanks Meter: 46	I also faced this problem but i fixed it by putting the device in DFU mode BR

08-11-2011, 20:28	#5 (permalink)
persianuser No Life Poster Join Date: May 2007 Posts: 520 Member: 516318 Status: Offline Thanks Meter: 27	successfully downgraded to 4.2.1. but!! it stays on black/blank screen,itunes says its on recovery mode & i have to restore it to be usable. tried tiny umbrella & fixrecovery for 4.2.1 but no luck !! how can i get it out of this condition?

08-11-2011, 22:27	#6 (permalink)
badsha007 Freak Poster Join Date: May 2009 Location: ATHENS-GREECE Age: 42 Posts: 248 Member: 1022280 Status: Offline Thanks Meter: 14	u change host file and restore same version 2 time.....exitrecovery tinyumbrella.....

08-12-2011, 09:52	#7 (permalink)
persianuser No Life Poster Join Date: May 2007 Posts: 520 Member: 516318 Status: Offline Thanks Meter: 27	yes i did.& what can i do? everytime i use exit recovery/fix recovery phone stuck's on greenpoison black screen(3 lines of command unable to find fs_mount...etc)

08-12-2011, 11:17	#8 (permalink)
persianuser No Life Poster Join Date: May 2007 Posts: 520 Member: 516318 Status: Offline Thanks Meter: 27	Solved by just boot tethered rightnow

08-12-2011, 11:19	#9 (permalink)
persianuser No Life Poster Join Date: May 2007 Posts: 520 Member: 516318 Status: Offline Thanks Meter: 27	BUT I HAVE TO DO IT EVERYTIME PHONE GOES ON N OFF.other wise it will be black ps its on 4.3.3 now

08-12-2011, 11:22	#10 (permalink)
manish.kalra Freak Poster Join Date: Aug 2011 Location: ganganagar Posts: 329 Member: 1627229 Status: Offline Thanks Meter: 48	how to downgarad iphone 4 4.3.5.. i have also ...