Unlock fails after replacement of motherboard

vjtz

Member
Jan 5, 2013
39
2
0
Prague
trapa.cz
Hi, I hard bricked my ASUS Transformer TF300T (my fault) and sent it to ASUS to repair it. They replaced motherboard. So now I have it back with fresh Android 4.1.1. I tried to use ASUS' app to unlock bootloader (stock ROM without root is not usable for me), but when I agree and tap to "unlock", it only says "unknown error" and it doesn't work. It also says it might be problem with network, but network is working correctly. I think the problem is related to replacement of motherboard, but I don't know how. Does anyone have same problem? Some advice? Thanks in advance...
 

graphdarnell

Senior Member
Jan 25, 2012
714
158
43
Hi, I hard bricked my ASUS Transformer TF300T (my fault) and sent it to ASUS to repair it. They replaced motherboard. So now I have it back with fresh Android 4.1.1. I tried to use ASUS' app to unlock bootloader (stock ROM without root is not usable for me), but when I agree and tap to "unlock", it only says "unknown error" and it doesn't work. It also says it might be problem with network, but network is working correctly. I think the problem is related to replacement of motherboard, but I don't know how. Does anyone have same problem? Some advice? Thanks in advance...
You want to use v7 APK. If the device is busy doing something else, it'll return with unknown error. That being the case, you need to wait until after the tab has completed updating all the apps.
 

vjtz

Member
Jan 5, 2013
39
2
0
Prague
trapa.cz
You want to use v7 APK. If the device is busy doing something else, it'll return with unknown error. That being the case, you need to wait until after the tab has completed updating all the apps.
When I try it, tablet is doing nothing else. I'm sure I use correct version of unlock app. All apps are updated using Play. It doesn't show updates of Android (it has 4.1, id doesn't see OTA to 4.2). Anyway, thanks for advice...
 

llcoolveer

Senior Member
May 12, 2011
79
24
0
Den Bosch
Hi, I hard bricked my ASUS Transformer TF300T (my fault) and sent it to ASUS to repair it. They replaced motherboard. So now I have it back with fresh Android 4.1.1. I tried to use ASUS' app to unlock bootloader (stock ROM without root is not usable for me), but when I agree and tap to "unlock", it only says "unknown error" and it doesn't work. It also says it might be problem with network, but network is working correctly. I think the problem is related to replacement of motherboard, but I don't know how. Does anyone have same problem? Some advice? Thanks in advance...
Yuuuuup,my TF300t had a broken dock/tablet connector.Got it back with a new mobo and 4.2.1 and the previous bootloader version V10.6.1.15.3, i tried every unlock theory around....nothing happened,but rooted it with motochopper.Its one big fustrating sheit....!!!!:(
 

vjtz

Member
Jan 5, 2013
39
2
0
Prague
trapa.cz
What was the procedure,can you explain what the fix was...?

Sincerely,LLCOOLVEER
The problem was, that after replacement of the motherboard, the tablet was locked. When you use the ASUS unlock utility, it connects to ASUS server and makes there entry, that your tablet with respective SN is unlocked now. It is not possible to relock tablet or unlock one tablet twice. Obviously. But when I've got it back, it was locked, but in their DB they still had entry, that it is unlocked, but in fact I couldn't unlock it. So I wrote to ASUS service and after exchange of several e-mails we found where problem lies and they enabled me to unlock it again.
 

llcoolveer

Senior Member
May 12, 2011
79
24
0
Den Bosch
The problem was, that after replacement of the motherboard, the tablet was locked. When you use the ASUS unlock utility, it connects to ASUS server and makes there entry, that your tablet with respective SN is unlocked now. It is not possible to relock tablet or unlock one tablet twice. Obviously. But when I've got it back, it was locked, but in their DB they still had entry, that it is unlocked, but in fact I couldn't unlock it. So I wrote to ASUS service and after exchange of several e-mails we found where problem lies and they enabled me to unlock it again.
You mean the Akamai netsession interface Asus uses...?! I read an article wat described this feature...you also can do it yourself btw. Did you have to put the TF in download mode..? Or was it done fully operational...? And did you have to log in to your Asus account and register it first...? I tried it this way...but maybe i made a tiny mistake....Can you confirm this please, it would make me a very happy person...:good:

Have a Good Weekend.....
 

vjtz

Member
Jan 5, 2013
39
2
0
Prague
trapa.cz
You mean the Akamai netsession interface Asus uses...?! I read an article wat described this feature...you also can do it yourself btw. Did you have to put the TF in download mode..? Or was it done fully operational...? And did you have to log in to your Asus account and register it first...? I tried it this way...but maybe i made a tiny mistake....Can you confirm this please, it would make me a very happy person...:good:

Have a Good Weekend.....
Hi, I didn't find way how to do it myself. At leas not with 4.2 bootloader. It was done fully on their server side. They confirmed me they correct respective entry in their DB, so I could use the unlock app to unlock it again. I don't have any ASUS account and I don't want any. :)

On the beginning I wrote them I'm not able to unlock it again after exchange of motherboard. They told me, that in their DB it shows as unlocked - so that I can't unlock it again. After exchange of few mails Czech ASUS support contacted Taiwan HQ and it was done.

Now I'm happy with Baked ROM. :)
 

llcoolveer

Senior Member
May 12, 2011
79
24
0
Den Bosch
Hi, I didn't find way how to do it myself. At leas not with 4.2 bootloader. It was done fully on their server side. They confirmed me they correct respective entry in their DB, so I could use the unlock app to unlock it again. I don't have any ASUS account and I don't want any. :)

On the beginning I wrote them I'm not able to unlock it again after exchange of motherboard. They told me, that in their DB it shows as unlocked - so that I can't unlock it again. After exchange of few mails Czech ASUS support contacted Taiwan HQ and it was done.

Now I'm happy with Baked ROM. :)
Now i understand...the old serialnr.is still in the DB at Asus,but the nem mobo has off course no relation to the old one...i will check my RMA bill to see if i can find something about it,and if i do i register this one too....see how that works out...:good:

Thanx for the info,it was very usefull..:eek:
 

funnel71

Senior Member
Jan 24, 2011
958
209
0
Check your about tablet screen for a serial. I've heard when some get tablets back from Asus, the serial is all zeros or nonexistent which is required to unlock. No fix is known for this to my knowledge.

Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
 

paedz718

Senior Member
Oct 8, 2009
81
15
0
Queens, NYC
Same issue, rma'd for upgrade issue then second rma because I couldn't unlock. Supposedly Mac addresses and serials were not keyed in correctly during this process for others. I still can't unlock, network error like before