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[HELP] is my tablet bricked?

hi,
i bought yesterdy a tablet from a private person and not a store. the tablet looked new, wraped in original wrping and all, and i didn't started it on, since i was told the owner didn't even do the 8 hours charge.
after charging, i started on the tablet, and it got stuck on the ASUS logo. i tried hard reset (button down + power for 12 seconds or more) but all it doe's is again the asus logo and nothing more.
is there anything that can be done?
needless to say the person i bought it from is unrechable (going to the police to comlain of fraud, but i was too stupid and didn't took his full details )

Contact asus for the warranty if they let you. This shouldn't be in the dev section though.
Sent from my VS910 4G using xda premium

not sure if they let me
don't have envoice or recipt
where should this be?

i have apx mode - what can i do next?
found out i have apx mode.
is there a way to reinstall the device to work?

fef3000 said:
found out i have apx mode.
is there a way to reinstall the device to work?
Click to expand...
Click to collapse
Just download the firmware including original Rom straight from http://vip.asus.com/ Flash CWM. Unzip the package to INTERNAL SD, just extract ONCE. Boot into CWM, flash the package and see how it goes
Sent from my LG-P999 using xda premium

vn00914361 said:
Just download the firmware including original Rom straight from http://vip.asus.com/ Flash CWM. Unzip the package to INTERNAL SD, just extract ONCE. Boot into CWM, flash the package and see how it goes
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
could you by any chance explain to me how to do all that? how do i flash cwm if all i got is apx mode? all the guides don't talk about apx mode
i understand a bit, but i am a noob who was tricked, and wasn't supose to do all that
would realy apriciate elaboration, if possible

fef3000 said:
could you by any chance explain to me how to do all that? how do i flash cwm if all i got is apx mode? all the guides don't talk about apx mode
i understand a bit, but i am a noob who was tricked, and wasn't supose to do all that
would realy apriciate elaboration, if possible
Click to expand...
Click to collapse
If you need help go to the Index of the TF300T
It's a good start.
And then you came back and ask your questions that will be possibly without response.
It's a forum for share, indeed, but you must to try and search :good:
We are always here for help you
Edit: Don't be afraid, if your post has been moved to an another forum; go to => Transformer TF300T Q&Ac

first of all - thank you, but
here is the, i read all day the index (well some of the day), and there is nothing there that has commands for apx mode...
when i said i'm a noob, it was to say i need a bit of help, not a lot, some of the stuff i know, but still
any way, tried one click root tool, but device is not recognized.
my only hope is to work on apx mode, but i don't know how, or what can be done in that mode.
whould appriciate if someone knows how to help me

fef3000 said:
here is the, i read all day the index (well some of the day), and there is nothing there that has commands for apx mode...
when i said i'm a noob, it was to say i need a bit of help, not a lot, some of the stuff i know, but still any way, tried one click root tool, but device is not recognized.
my only hope is to work on apx mode, but i don't know how, or what can be done in that mode.
whould appriciate if someone knows how to help me
Click to expand...
Click to collapse
I saw that you had posted your problem elsewhere.
I see not other solution than to return the product that you purchased to Asus, with purchase (of the former owner) and sale invoices.
And try to explain your problem.
If I find something, I would come back to you

philos64 said:
I saw that you had posted your problem elsewhere.
I see not other solution than to return the product that you purchased to Asus, with purchase (of the former owner) and sale invoices.
And try to explain your problem.
If I find something, I would come back to you
Click to expand...
Click to collapse
i am trying, but i have no recipt, since i bought it from a crook who disapeared (and foolishly i didn't take his full detailes).
whould apriciate the help, if you will find an idea, and also i hope asus lab will assist me, if they can, tomorow they will take the item and tell me if they can do anything.
let's hope the dumb ass didn't ruined the pad for good.
i will update

Do you have access to recovery or ANY adb access? Since asus didn't release the sbk for the TF300 (Only fastboot if your bootloader is unlocked) Idt you have NvFlash access, you could attempt it but without a sbk afaik Apx mode is useless.
If you can get fastboot/adb access via the volume-down+power menu you may be able to flash recovery and then a ROM or adb flash/fastboot flash a full restore stock blob through the staging partition.

fef3000 said:
hi,
i bought yesterdy a tablet from a private person and not a store. the tablet looked new, wraped in original wrping and all, and i didn't started it on, since i was told the owner didn't even do the 8 hours charge.
after charging, i started on the tablet, and it got stuck on the ASUS logo. i tried hard reset (button down + power for 12 seconds or more) but all it doe's is again the asus logo and nothing more.
is there anything that can be done?
needless to say the person i bought it from is unrechable (going to the police to comlain of fraud, but i was too stupid and didn't took his full details )
Click to expand...
Click to collapse
fef3000 said:
found out i have apx mode.
is there a way to reinstall the device to work?
Click to expand...
Click to collapse
Thing O Doom said:
Do you have access to recovery or ANY adb access? Since asus didn't release the sbk for the TF300 (Only fastboot if your bootloader is unlocked) Idt you have NvFlash access, you could attempt it but without a sbk afaik Apx mode is useless.
If you can get fastboot/adb access via the volume-down+power menu you may be able to flash recovery and then a ROM or adb flash/fastboot flash a full restore stock blob through the staging partition.
Click to expand...
Click to collapse
That's why I can't explain why he can't flash one recovery by fastboot command.
Is that your installation of Asus drivers , and SDK is correct? just verify it
Access Adb or not? When you connect your TF can you access to your recovery or not?

[Q] Bricked! Can't revert to stock or custom rom

So here's the problem. Just got my One S the other day and I attempted to install trickDroid on it. I got it rooted and unlocked and tried installing. Something went wrong somewhere along there and it wont boot up, only past the first screen and its all black after, i do hear the start up sound after a while but it stays black screen. So i tried to revert it back to stock and during the process I though I had to erase/reset data, so i did that. Only then did i realize that everything was on internal memory and it did not have an external sd card. So I cant install anything without transfering the files from my PC. I tried different versions of clockwork by fastbooting it because i heard it connect to pc automatically. But i end up with an I drive I cant access(insert disk in to I) or on the phone its says something about "unable to open ums lunfile htc one s" I also tried the all in one tool and the latest version doesnt have stock recovery. So the main problem is I can't transfer files on to the phone to reinstall any ROMs and I cant revert back to stock. I tried adb push to push the files on to the device but im not exactly sure how to do it. I am thankful for any help anyone can provide me.

Were you s3 or s4 ?
Sent From My 1 S
Hit That Thanks !!!

maek_it_happen said:
Were you s3 or s4 ?
Sent From My 1 S
Hit That Thanks !!!
Click to expand...
Click to collapse
It is from canada, fido/rogers S4.

Can you boot into bootloader ?
Sent From My 1 S
Hit That Thanks !!!

maek_it_happen said:
Can you boot into bootloader ?
Sent From My 1 S
Hit That Thanks !!!
Click to expand...
Click to collapse
ya i can, i can fastboot various recoveries too
the problem is still i cant mount the sd card so i cant transfer anything
adb push "rom.zip" /sdcard give the following " error device not found" even tho if i type "fastboot devices" it shows that my device is connected

Do you have a back up ......or is your sd completely empty now .. I'm not sure I can really help .. but that doesn't mean your out of luck .....
Another idea is your int sd mounted ?
Sent From My 1 S
Hit That Thanks !!!

jangilgoon said:
ya i can, i can fastboot various recoveries too
the problem is still i cant mount the sd card so i cant transfer anything
adb push "rom.zip" /sdcard give the following " error device not found" even tho if i type "fastboot devices" it shows that my device is connected
Click to expand...
Click to collapse
Try this
http://forum.xda-developers.com/showpost.php?p=25850720&postcount=8

dc211 said:
Try this
http://forum.xda-developers.com/showpost.php?p=25850720&postcount=8
Click to expand...
Click to collapse
thanks! I used the guide but I couldnt find all in one tool with stock since its being updated so i downloaded it from
but then i ran into the problem where it would not let me adb push, saying "protocol failed"
I did some research and found out that the adb.exe from htc sync has being interfering with the process.
I went to taskmanager and stopped the adb.exe process which then enabled me to adb push
After i loaded utb rom, but it kept popping up with errors so I installed MIUI which i find to be relatively stable.
Now Im chilling and enjoying my android!
Thanks to everyone for the help!

[Completed] How to install ROM on Vonino Pluri Q8 tablet ?

Hi there,
Today i've received this tablet. All good and dandy until it notified me it has an update so obviously i've gone and do the update. Surprise.. after reboot, update installment and so on the device won't boot anymore at all, and recover mode doesn't work to enter.
I've found official ROM package on their site:
ftp.vonino.org/public/Firmware/Vonino_Tablets/Pluri%20Q8/Orange%20Version/Android%206.0/
Tablet can connect to the PC, but it isn't recognized because "some drivers" missing. How can i install this ROM on the tablet from my pc ?
Thank you.

Hi,
I can't find anything about it on xda or anywhere. You'll need to contact the manufacturer for drivers and instructions on flashing their firmware.
Good luck!

After i tried like almost the entire day i got the tablet in rescue mode or fastboot mode..
I've wiped/data or factory reset and the same happens... it stays in a loop when boot at logo.
I've let it to do so until the battery went dead from 100% and still the same.
I have official ROM but can't install it at all. I think the bootloader is locked?! And it doesnt even unlock it when using some fastboot commands
Also can't install nothing from SD card and when tryin to use ADB the PC can't see the device, but when using fastboot I can work on it.
In rescue mode i've done some root integrity check and at the end of the check some /system files are modified. I believe this is causing the entire problem.

denede said:
After i tried like almost the entire day i got the tablet in rescue mode or fastboot mode..
I've wiped/data or factory reset and the same happens... it stays in a loop when boot at logo.
I've let it to do so until the battery went dead from 100% and still the same.
I have official ROM but can't install it at all. I think the bootloader is locked?! And it doesnt even unlock it when using some fastboot commands
Also can't install nothing from SD card and when tryin to use ADB the PC can't see the device, but when using fastboot I can work on it.
In rescue mode i've done some root integrity check and at the end of the check some /system files are modified. I believe this is causing the entire problem.
Click to expand...
Click to collapse
Typically, on devices I know of, it's fastboot that you would use to flash factory images. So you should be good there. But again, I don't know if that is how your device works too. And it would also typically not matter what's been altered on your device, system wise, you would simply flash the appropriate images with fastboot.
So I'd still say you need to determine the correct procedure to flash the files you got from their site. Perhaps there site has instructions? Or a support number for help of its not working as it should?

I've talked with the support. They gave me a link with an official ROM, a different one that the one that was from the site. But they didn't even told how to use it, LOL.
Have the damn files and don't know what to do with them, OMG.
I've placed the zip archive on SD card and tried to use the option from rescue mode with 'update via sd card". The zip archive is visible but after i select it says Installation aborted :|
I've googled around and maybe my tablet needs to be at over 50% power... but it was plugged into the wall it should've worked.
edit: 100% and no good...
edit2: they sent me another e-mail with a pdf file in which it is explained how to flash their device.

need bootloop help please

So far I always found answers to all my questions here without ever asking. This forum is awsome! Thanks to everyone here doing good work!
My problem: I have the European version of the Honor View 10. I opened bootloader, I installed the Magisk correctly with the 15.4 version, worked all fine. (thank you topjohnwu)
Then MY mistake ... I wanted to install Xposed Installer. I was not concentrated that moment and took the wrong version! From my other Honor phone (android 6.0, version 89, arm64). Absolutely stupid!
Phone restarted ... bootloop ... and goes into eRecovery. I tried everything I could there, clear dalvik cache, factory reset. > no change!
Then I thought ok, connect to PC, safe mode ... adb ... but no success. adb devices brings no result. PC does not find my phone anymore. I hoped I could get into my phone by connecting with PC, but it seems I am unable. So I can not help myself this way.
Next try was to force the phone to update with SD card. I only found asian update software, but I already did not care. I want to save my phone. Update starts, but after 5% it stops, update fail.
Now I hope that someone here can help. I have no idea what else I could do. Best regards, Markus

mark_at said:
So far I always found answers to all my questions here without ever asking. This forum is awsome! Thanks to everyone here doing good work!
My problem: I have the European version of the Honor View 10. I opened bootloader, I installed the Magisk correctly with the 15.4 version, worked all fine. (thank you topjohnwu)
Then MY mistake ... I wanted to install Xposed Installer. I was not concentrated that moment and took the wrong version! From my other Honor phone (android 6.0, version 89, arm64). Absolutely stupid!
Phone restarted ... bootloop ... and goes into eRecovery. I tried everything I could there, clear dalvik cache, factory reset. > no change!
Then I thought ok, connect to PC, safe mode ... adb ... but no success. adb devices brings no result. PC does not find my phone anymore. I hoped I could get into my phone by connecting with PC, but it seems I am unable. So I can not help myself this way.
Next try was to force the phone to update with SD card. I only found asian update software, but I already did not care. I want to save my phone. Update starts, but after 5% it stops, update fail.
Now I hope that someone here can help. I have no idea what else I could do. Best regards, Markus
Click to expand...
Click to collapse
Did you already try ro flash ramdisk and system sith stock images via fastboot?

alohahe3000 said:
Did you already try ro flash ramdisk and system sith stock images via fastboot?
Click to expand...
Click to collapse
I would flash anything ... if I could! That is my problem at the moment and I can not solve it.
When I start phone I get into Huawei eRecovery after two tries to boot > does not help!
When I connect to PC > phone gets not detected! (during boot try it gets connected shortly ... but then gets disconnected after some seconds, in between I can not get into phone via PC)
So when I would want to use fastboot .... not possible because of that issue. I tried to connect in fastboot mode ... but no difference. Actually I do not understand why I can not connect to PC anymore!
The only way I can imagine now is flash or update something via SD card. I tried with asian update.zip, but it will only go to 5% .... and then ends.
But to be honest ... I am not very optimistic about finding any solution. I think only some very smart pro from this site might have an idea. But not sure if these guys read questions about bootloops.

mark_at said:
Next try was to force the phone to update with SD card.
Click to expand...
Click to collapse
Try to flash via Fastboot the stock rom... do a full wipe and reboot.
here the link to the stock ROM:
https://mega.nz/#!W9hjiTgZ!_ZGq7V83bkWPF_Ue7_c41wVXNrQ_YjnsQUxRS0_MevU

Taobaibai said:
Try to flash via Fastboot the stock rom... do a full wipe and reboot.
Click to expand...
Click to collapse
Thanks for the link. But how can I flash via fastboot when my phone is not detected from the PC? That is my main problem at the moment!
That is why I wrote about all things I had tried already. And being unable to connect to the computer is really worrying me!
"adb devices" will not find my phone!

mark_at said:
Thanks for the link. But how can I flash via fastboot when my phone is not detected from the PC? That is my main problem at the moment!
That is why I wrote about all things I had tried already. And being unable to connect to the computer is really worrying me!
"adb devices" will not find my phone!
Click to expand...
Click to collapse
You have to boot into fastboot modus. When booting, push power and Volume down button. A white screen appears if device is connected with PC.
Then try "fastboot devices". If your device is displayed, you can flash with "fastboot flash" system image. Stock system.img download link can be found in AOSP thread, second post.

alohahe3000 said:
You have to boot into fastboot modus. When booting, push power and Volume down button. A white screen appears if device is connected with PC.
Then try "fastboot devices". If your device is displayed, you can flash with "fastboot flash" system image.
Click to expand...
Click to collapse
Exactly
alohahe3000 said:
Stock system.img download link can be found in AOSP thread, second post.
Click to expand...
Click to collapse
Or just use my link. I copied it from the AOSP Thread

I managed to get my phone displayed when I entered fastboot devices.
And I managed to flash the img!! Hurra !!
Thank you very very much to everyone here helping me ...
I thought that nothing would work because when I typed "abd devices" nothing happened. But when I typed "fastboot devices" the phone was there.

mark_at said:
I managed to get my phone displayed when I entered fastboot devices.
And I managed to flash the img!! Hurra !!
Thank you very very much to everyone here helping me ...
I thought that nothing would work because when I typed "abd devices" nothing happened. But when I typed "fastboot devices" the phone was there.
Click to expand...
Click to collapse
It wasn't so difficult.
Viel Spaß mit dem Smartphone!!!

one more thing I have to add:
after flashing the system.img from the link above .... I have FRP lock .... that was not before.
does it mean I have to relock my bootloader and then unlock it once again? In some other thread I found that information.

mark_at said:
one more thing I have to add:
after flashing the system.img from the link above .... I have FRP lock .... that was not before.
does it mean I have to relock my bootloader and then unlock it once again? In some other thread I found that information.
Click to expand...
Click to collapse
and now I relocked bootloader .... and guess what? bootloop again ... and I can not unlock it again, because I did not think about enable OEM unlock! It says necessary to unlock FRP before.
I am terribly sorry for being such an idiot!!

mark_at said:
and now I relocked bootloader .... and guess what? bootloop again ... and I can not unlock it again, because I did not think about enable OEM unlock! It says necessary to unlock FRP before.
I am terribly sorry for being such an idiot!!
Click to expand...
Click to collapse
Never ever relock bootloader untill you have a backup plan. We have dload method till emui 7 buut not sure on EMUI 8 so can't suggest you anything at the moment. Someone played with EMUI 8 can guide you through it.

I understand that I was not allowed to relock bootloader! I feel awful and stupid about it ... believe me!

I was able to erase FRP with HCU client from DC Phoenix.
After that I was in phone again
And afterwards I could open the bootloader again.
Halleluja!!
Thanks for everyone's help here ...

Will Motherboard Replacement Solve Bricked TF300T?

Hi
TF300T JB 4.2.1
Bought new in the US in 2013 so has US SKU. Originally for my wife, but she now has an iPad Pro so I've got the hand-me-down!
Wiped it and unlocked the device successfully using the Asus V8 utility. Tried to flash TWRP from Win7 computer but something went wrong. The interface was still there, it would boot up okay but there was no sign of TWRP. Eventually, I went into fastboot and selected RCK. Nothing happened except the icon turned brown and just sat there. Then I tried a factory reset but it wouldn't have any, nor a cold boot. In desperation I turned the device off and tried to reboot. The initial "Asus" screen came up ("This device is unlocked" in top left-hand corner and the 'Nividia Tegra' logo in bottom right. No spinning circle of dots). It won't boot into fastboot, in fact the volume keys are totally unresponsive. On/off will turn off the device, but it immediately boots back to the same Asus screen. It's not recognised by the Win7 computer so I can't flash anything to it. I think I've tried everything this forum (and a few lesser ones!) could suggest, to no avail.
I believe I now have the proverbial 'bricked' tablet.
Nothing daunted, and not prepared to involve Asus support, I'm considering swapping the motherboard (I've done a couple on Windows computers) but will this bring my TF300T back to life, or is there more I need to do?
I'm no expert on the Android OS so any help from you experts would be much appreciated.
Thanks in advance.

Anyone?
I know the TF300 is a bit long in the tooth now, but all I want to know is whether a bricked one can be recovered by replacing the motherboard. There must be someone out there who has done the replacement and can advise me? Also, I apologise if this in in the wrong section, I guess it should have been in the 'Help' section, but I didn't realise until I'd posted it.

capelyddol said:
Hi
TF300T JB 4.2.1
I'm considering swapping the motherboard (I've done a couple on Windows computers) but will this bring my TF300T back to life, or is there more I need to do?
Click to expand...
Click to collapse
Of course, exchange the MB will bring back your device to life. But it is really the last option.
Firstly you have to check patiently if you can get access into your device. Therefore read mindfully this thread:
https://forum.xda-developers.com/showthread.php?t=2396072
"The solution by @Buster99 is for those who:
- flashed the wrong recovery, and wiped data
- are able to boot into recovery, but cannot flash anything
- no adb access (although, if you DO have adb access, this will still work for you...)"
Hopefully my advise will help you! Don't forget to thank @Buster99

ebonit said:
Of course, exchange the MB will bring back your device to life. But it is really the last option.
Firstly you have to check patiently if you can get access into your device. Therefore read mindfully this thread:
https://forum.xda-developers.com/showthread.php?t=2396072
"The solution by @Buster99 is for those who:
- flashed the wrong recovery, and wiped data
- are able to boot into recovery, but cannot flash anything
- no adb access (although, if you DO have adb access, this will still work for you...)"
Hopefully my advise will help you! Don't forget to thank @Buster99
Click to expand...
Click to collapse
ebonit ~ many thanks for your response. Unfortunately, I really don't think there's any way I can get access. The initial boot-up screen is all I get, in perpetual loop. The only way to shut it down is reset with vol-up., though it's possible it may be in some sort of variation of apx mode at this point as the screen is blank. I've no way of knowing as my win 7 computer only acknowledges an 'unknown device' at that point, and nothing when the initial boot screen is there. Vol-down doesn't seem to have any effect at all. Windows has already installed the drivers so won't re-install, or uninstall them as it's 'unknown'. I did once manage to get it recognised as an 'apx device' but with an '!' (not sure how I did it as I haven't been able to replicate it since!) but I don't think that helps me even if I could replicate it without the '!', Nvflash requires I have the necessary back-up files, which of course I don't. I don't know where to go from here except to replace the motherboard. Once I get the device apart I may try disconnecting the battery, vol-down, and reconnect, to try booting to recovery, but I'm not optimistic of that working.
I'll certainly be very happy to consider any other suggestions you, or anyone else, may have.
I tried Buster99's method, but as my TF300T isn't recognised by Windows that was a non-starter.
Once again, many thanks for your input.
capelyddol
(John)

capelyddol said:
ebonit ~ many thanks for your response. Unfortunately, I really don't think there's any way I can get access.
Click to expand...
Click to collapse
I'm sorry, but if you are really sure that you cannot boot into either fastboot or recovery the tablet is bricked for good!
In this case to replace the mainboard will be the last option to get the tablet back to life. There is a very good instruction with pictures by @huebinger that shows you what to do exactly: https://forum.xda-developers.com/showthread.php?t=2368372 (BTW, that's what I did many years ago!!!)
On ebay.com you may find a used one:
https://www.ebay.com/itm/GENUINE-AS...863174?hash=item54321ab206:g:lrcAAOSwjXRXcHSB

ebonit said:
I'm sorry, but if you are really sure that you cannot boot into either fastboot or recovery the tablet is bricked for good!
In this case to replace the mainboard will be the last option to get the tablet back to life. There is a very good instruction with pictures by @huebinger that shows you what to do exactly: https://forum.xda-developers.com/showthread.php?t=2368372 (BTW, that's what I did many years ago!!!)
On ebay.com you may find a used one:
https://www.ebay.com/itm/GENUINE-AS...863174?hash=item54321ab206:g:lrcAAOSwjXRXcHSB
Click to expand...
Click to collapse
ebonit ~ Thanks for the links. I checked out huebinger's and pulled my motherboard out, then bought the one you linked to on eBay. Hopefully, I didn't do any damage getting the MB out. I'm more used to the tough old internal wiring of desktop computers!
I'd already backed up the data and done a factory reset before I began my abortive attempts at rooting so hopefully I'll be starting with a clean slate once I get the new board installed. It's going to take a while to cross the pond to France, but I'll report on how it goes once it arrives.
Thanks again for your help, it's much appreciated.
John.
(capelyddol)

Hello,
My tf300t got bricked while upgrading twrp.
nothing helped, i put away the tablet, after a year i found her ... so i said to myself "why not" ?! so i ordered from ebay a motherboard, and it's work like a charm, but the tablet is old now ;0
now i want to setup a lite rom ....

mitomon said:
Hello, now i want to setup a lite rom ....
Click to expand...
Click to collapse
What do you mean?

What do you mean?
Click to expand...
Click to collapse
I was wondering that, too!
It's good to know the s/h motherboard cured his tablet's ills, though.

My replacement motherboard arrived yesterday and is installed, up, and running.
Android Ver: 4.2.1
Build No: US_epad - 10.6.1.27.5
I downloaded the v8 unlock device app and unlocked the tab.
I've downloaded:
1) djibe Transformer Pad TF300T pack v3
2)KatKiss -7.1_TF300T_029
3) open-gapps-arm-7.1-pico-20180517
I have a 32g microSD formated to FAT32 installed in the tablet.
All as per djibe89's tutorial here: https://forum.xda-developers.com/transformer-tf300t/general/guide-asus-transformer-pad-tf300t-stock-t3554744
My 'versions' are identical with djibe89's except for the BT version which is 11.38, not 10.38. Hopefully that'll not affect anything!
At this point I run into problems:
1) My USB link between the win 7 (32-bit) computer and the tablet is iffy. Sometimes it works for a while, but I frequently get the "USB device Not Recognized" with a useless MS message not worth clicking on. I'm wondering if there's a more reliable way to transfer files? Airdroid, possibly? Losing connection during file transference doesn't bear thinking about.
2)
Go to folder /Universal Naked Drivers 0.72 you unziped at start on your Desktop.
Select file android_apxusb.inf, then right click -> Install.
Force driver install and wait until a success message prompts.
Repeat operation with android_winusb.inf .
Click to expand...
Click to collapse
I tried installing these drivers by both right-click-> Install and also CMD. -to no avail. I get a Windows message saying the best drivers for the device are already installed, but the tab still isn't recognized. Oh, yes it is! Ooops, now it isn't! ad infinitum, I'm guessing.
Can anyone advise how to overcome this or I can see myself keeping the used motherboard salesmen in Mercedes for the next decade! :crying:
3) Assuming I can overcome the iffy USB problem: should I use TWRP Kang 2.8.7.2 or TWRP 3.2?
I guess that's enough problems for now. I hope ebonit or some other expert can assist with this as I really want to get this tab rooted.
Thanks
John.
(capelyddol)

capelyddol said:
My replacement motherboard arrived yesterday and is installed, up, and running.
Android Ver: 4.2.1
Build No: US_epad - 10.6.1.27.5
Click to expand...
Click to collapse
Congratulations! You did a good job. Thanks for your report.
First of all, to avoid any issues to get your device on N 7.1 Nougatella please follow exactly Tim's install instruction step by step in post #1. https://forum.xda-developers.com/transformer-tf300t/development/rom-t3453702
You need Kang TWRP as advised by Tim. Don't forget to format data through Kang TWRP before. It takes up to one hour. Then change file system to F2FS for data only no cache and system. Successfully done your device is now ready to install Rom, pico Gapps and SuperSU fresh downloaded via Tim's links there.
PS: About your USB issue take another USB port on your PC not via hub!
Good luck!

Three days with nothing from me, you'd be excused for thinking either I was dead, or my tab was! Thankfully, neither. In fact - SUCCESS!!! We're both alive and well, and for the tablet at least, performing better than ever.
TWRP installation took me two days. First, the computer (Win 7 32-bit) refused to recognize the TF300T and 'fastboot' could have been renamed 'nerverboot'. Strangely, the whole business seemed to evolve over time. Persistence was the name of the game - trying different USB ports, booting and rebooting (both tab and desktop). Eventually I found Snoop05's '15 seconds ADB Installer v1.4.3' https://forum.xda-developers.com/showthread.php?t=2588979 and with that I began to make progress...slowly!
Code:
fastboot devices
returned '???????????????' over and over again. By uplugging/plugging the cable into the tablet a few times I suddenly got a nice long string of letters and numbers. It came and went a few times but after a while seemed to stabilize till I felt ready for the big push of TWRP. I got so many error messages: 'can't find twrp.img' (I'd renamed it); 'can't open twrp.img'; 'insufficient memory', etc, etc.. Suddenly, it worked. It took just over eight seconds to download the 6.95MB. Booting into recovery was rather heart-stopping, but it came up a treat.
After that it was relatively simple to set up the TWRP (I found Djibe89's guide https://forum.xda-developers.com/transformer-tf300t/general/guide-asus-transformer-pad-tf300t-stock-t3554744 especially useful and there's a copy in the -djibe Transformer Pad TF300T pack v3' http://bit.ly/djibe-tf300t-v3.
Flashing KatKiss 7.1_TF300T_029, open_gapps-arm7.1-pico, and SuperSU-v2.82 from the microSD I'd copied them to went like a dream and before I knew it the old tab was humming with life once more. I'm a very happy chappy!
I have just two queries (so far ) 1. djibe89 mentions the file 'deviceID.apk' but Tim doesn't. Is it still necessary? I believe it's to keep Google happy, but I've no problems downloading from the Play Store, so I've not installed it as yet.
2) While installing the 'Battery Calibration' app it briefly stated that the tab wasn't rooted. I assume if I've achieved all the above, then it must be?
Now I'm going to play. No doubt I'll be back with a few more queries before too long!
Special thanks to ebonit for his help and support.

capelyddol said:
My replacement motherboard arrived yesterday and is installed, up, and running.
Android Ver: 4.2.1
Build No: US_epad - 10.6.1.27.5
I downloaded the v8 unlock device app and unlocked the tab.
I've downloaded:
1) djibe Transformer Pad TF300T pack v3
2)KatKiss -7.1_TF300T_029
3) open-gapps-arm-7.1-pico-20180517
I have a 32g microSD formated to FAT32 installed in the tablet.
All as per djibe89's tutorial here: https://forum.xda-developers.com/transformer-tf300t/general/guide-asus-transformer-pad-tf300t-stock-t3554744
My 'versions' are identical with djibe89's except for the BT version which is 11.38, not 10.38. Hopefully that'll not affect anything!
At this point I run into problems:
1) My USB link between the win 7 (32-bit) computer and the tablet is iffy. Sometimes it works for a while, but I frequently get the "USB device Not Recognized" with a useless MS message not worth clicking on. I'm wondering if there's a more reliable way to transfer files? Airdroid, possibly? Losing connection during file transference doesn't bear thinking about.
2)
I tried installing these drivers by both right-click-> Install and also CMD. -to no avail. I get a Windows message saying the best drivers for the device are already installed, but the tab still isn't recognized. Oh, yes it is! Ooops, now it isn't! ad infinitum, I'm guessing.
Can anyone advise how to overcome this or I can see myself keeping the used motherboard salesmen in Mercedes for the next decade! :crying:
3) Assuming I can overcome the iffy USB problem: should I use TWRP Kang 2.8.7.2 or TWRP 3.2?
I guess that's enough problems for now. I hope ebonit or some other expert can assist with this as I really want to get this tab rooted.
Thanks
John.
(capelyddol)
Click to expand...
Click to collapse
hi ,
you said that you succeeded to unlock the tablet ?
how ?!
i tried with unlocker v7 and 8 , i got the network error.
my tf330t is on 4.2.1.
i try hard reset, nothing helped.
i changed the mb, succeeded to root with motochopper.
please , i need help.
thanks

mitomon said:
I tried with unlocker v7 and 8 , i got the network error. My tf330t is on 4.2.1.
Click to expand...
Click to collapse
To avoid any issues please reinstall your system by doing a Buster99 https://forum.xda-developers.com/showpost.php?p=44244313&postcount=12. Be sure you have the latest firmware "WW_epad-user-10.6.1.27.5"
After that delete your Google account. Then you may unlock your device with V7.

capelyddol said:
TWRP installation took me two days. Eventually I found Snoop05's '15 seconds ADB Installer v1.4.3' https://forum.xda-developers.com/showthread.php?t=2588979 and with that I began to make progress...slowly!
Click to expand...
Click to collapse
Hope you have Kang TWRP now as required by Tim in post #1!
I'm sorry, but you never mentioned that you cannot access your Tablet via ADB. Therefore please note, the best ADB tool, every Android user may have on his PC, is "Minimal ADB & Fastboot" https://forum.xda-developers.com/showthread.php?t=2317790.
BTW, the answer to your first question is nope, you don't need it. The answer to your second one is yes the device is rooted. However check the update status of your SuperSU. Hope you did fresh download Rom, Apps and SuperSU via Tim's links in post #1 of the Nougatella thread?

I have installed Kang TWRP 2.8.7.2 as per Timduru's link. My tab was wiped before installation so all apps were fresh downloads. SuperSU was 'UPDATE-SuperSU-v2.82-20170528234214.zip' again, as per Timduru's link, as was the ROM ' KatKiss-7.1_TF300T_030.zip'. Many thanks for pointing me to 'Minimal ADB & Fastboot' which I've now installed for future use. And many thanks for all your other help. No doubt I'll be back for more!

capelyddol said:
My tab was wiped before installation so all apps were fresh downloads. Many thanks for pointing me to 'Minimal ADB & Fastboot' which I've now installed for future use. And many thanks for all your other help. No doubt I'll be back for more!
Click to expand...
Click to collapse
You are welcome! It's good to hear that you did such a good job. Using the thanks button is always greatly appreciated.
Please note, if you have any issues or you are changing the Android system, Format /data through Kang TWRP is always required. Format /data is more than wipe (you did wipe!) or factory reset. It takes up to 1 hour to be successfully. After that your system is really clean.
"Warning: formatting will remove what is stored in your internal storage, so store the rom /gapps/supersu zips onto an external storage (microSD, SD card..) or make sure you know how to push them back through adb." advised by Tim in post #1.