iphone 5s Error 27

[d42k11]

hello

What does it mean if you get error 27 on iPhone 5s ?? where should one look to resolve this issue?
Thanks

[cooperlonely]

Try to find compatible u6_rf with baseband..
It's discussed many times.

[d42k11]

this phone is client phone is 64gb so if i switch with different phone u6_rf and baseband i will have to change nand to right? which means if i cannot find same 64gb size nand baseband and u6_rf i am in trouble right because this phone was working fine restoring fine only problem was no display now i have display but gives error 27

[cooperlonely]

So... How about inside? Someone repair it before you? I don't know of other causes of this error
And... How you repair display? You are change u3? If yes, u6_rf on back side, try reball it, and please, be careful..

[d42k11]

No does not look like anyone repair before

[cooperlonely]

Edited post before your answer, check please.
Offtop: i learn english again with you, thanks for that :-D

[BadGoose]

d42k11
Error 27 means incompatible baseband and bbflash. Maybe there is some mechanical damage on U6_RF?
For 5s you will need to change baseband, bbflash, nand plus CPU, because of touch id

[d42k11]

hello

I changed the u2 ic on this phone now its giving error 9 so i am lost before it was giving error 27 now since i changed u2 with new one its giving error 9 any suggestion cooper ?

[cooperlonely]

Why you change the u2? Is a cbtl1610?
Now you have apple logo, status bar and bluescreen?
Or long waiting and error 9?

[d42k11]

I have apple logo status bar but no blue screen about wait time I did not measure time

[d42k11]

Change U2 because cap that should give 5v was giving 4.60volts.

[cooperlonely]

Hey men, what are you do?
You are repair lcd and kill baseband eeprom, so why you go kill another components? What you do, men?!?!?!