TF300 Bootloop - Transformer TF300T Q&A, Help & Troubleshooting

Greetings guys,
I'm quite new here. I just received my asus tf300 from my brother as he dont want to use it anymore. The sad thing is my tf300 is bootlooping. I don't what happen but one day it is suddenly bootlooping at the ASUS white logo. I try to re-flash the stock ROM but fail. During the bootloader, it said something like this
"Android cardhu-user bootloader <1.00 e> released by "US_epad-10.6.1.15.3-20130416" A03 Key Driver not found.. Booting OS
I dont know what does that mean. My tablet will bootloop and I can't shut down the tablet as I need to wait until the battery dried off. I try to re-flash using the technique in master guide help ([GUIDE] How to manually update/restore firmware (Tf700, TF300, TF101, possibly TF201))
but it won't work. I try few firmwares but i still does the same thing. I dont know how to use the fast boot as there is no USB icon in my bootloader. So I dont know what to do. And of course my tablet has no warranty anymore.
Any suggestion? Btw, my device is locked, not installed recovery cwm or twrp. so I dont know what to do. I searched everywhere to fix my device by cant get it done

Hello ,
go to the Recovery and wipe cache and dalvik cache. And after that normally reboot and then it must work.
Fastboot will be start when you go to the recovery . The old USB Icon for Fastboot was removed by Asus by the update to 4.2 Jelly Bean.
Press Power button and volume Down for 10 sec to come in recovery. After that select rck and make the wipe cache and dalvik !

budalageo said:
Hello ,
go to the Recovery and wipe cache and dalvik cache. And after that normally reboot and then it must work.
Fastboot will be start when you go to the recovery . The old USB Icon for Fastboot was removed by Asus by the update to 4.2 Jelly Bean.
Press Power button and volume Down for 10 sec to come in recovery. After that select rck and make the wipe cache and dalvik !
Click to expand...
Click to collapse
greetings sir. Thanks for the help. But after I enter RCK, the android green logo come out for install update and the green android will be dead for error reason with green triangle. I assume I dont have any cwm recovery mode. I try to connect with pc for the recovery but it wont work. I in stall SDK android but still wont work. But the fastboot is detected on my pc tho

Do you have a Asus firmware on your internal sd card?
Sent from my MI 2A using Tapatalk

archspijkenisse said:
Do you have a Asus firmware on your internal sd card?
Sent from my MI 2A using Tapatalk
Click to expand...
Click to collapse
i'm afraid that i dont have the firmware on the internal storage of the tablet. can I unlocked my bootloader with this kind of situation?

bobo180590 said:
i'm afraid that i dont have the firmware on the internal storage of the tablet. can I unlocked my bootloader with this kind of situation?
Click to expand...
Click to collapse
some EDIT. i tried also to flash system using Fastboot. but it wont help.

Try to install recovery like twrp using fastboot.
Sent from my Asus Memo Smart 10 using Tapatalk

archspijkenisse said:
Try to install recovery like twrp using fastboot.
Sent from my Asus Memo Smart 10 using Tapatalk
Click to expand...
Click to collapse
Read the OP. His bootloader is locked.

Flash stock using fastboot? http://www.theandroidsoul.com/how-to-restore-asus-transformer-tf300t-back-to-stock/
Sent from my Asus Memo Smart 10 using Tapatalk

Related

Helpppp, I brick my TF700 and JB

after JB update i install TWRP then i remember that i shouldn't use it until a new update. I wanted to do a factory reset but having a custom recovery would not let me do it. I was looking for a guide to restore stock bootloader, it didn't work completly cause i still had TWRP has recovery. After that i notice that i did get 4 icons, RCK-android -usb - data wipe. after factory reset wasn't still working, i press data wipe to see if that works and now i don't get anything more than TWRP recovery (which doesn't work with JB) but when i reboot my tablet holding volume down i don't get any message at all. Goes straight to recovery.
I somehow managed to do the EXACT same thing!! All I get now is TWRP, no matter what button combination I press at startup. I can't seem to get it to recognise my external SDCard either.
Anyone have any ideas? Our tablets are dead in the water!!! :crying:
Try using fastboot + one of the system blobs that asus has posted on its website.
Sent from my TF700T using xda premium
If you are able to enter fastboot, (it's the USB icon of the 4), you may be in luck, you could for instance try intalling ClockworkMod Recovery, which is compatable with Jellybean, you could try flashing a stock firmware... I wouldn't start using my tablet as a coaster just yet...
pietpodlood said:
If you are able to enter fastboot, (it's the USB icon of the 4), you may be in luck, you could for instance try intalling ClockworkMod Recovery, which is compatable with Jellybean, you could try flashing a stock firmware... I wouldn't start using my tablet as a coaster just yet...
Click to expand...
Click to collapse
The two latest version are compatible with ics and jb. 2.2.2.3 and 2.3.0.0 i believe.
Sent from my Transformer Pad Infinity TF700T using Tapatalk 2
pietpodlood said:
If you are able to enter fastboot, (it's the USB icon of the 4), you may be in luck, you could for instance try intalling ClockworkMod Recovery, which is compatable with Jellybean, you could try flashing a stock firmware... I wouldn't start using my tablet as a coaster just yet...
Click to expand...
Click to collapse
as far as i understand eduardmc he's NOT able to enter fastboot...i got exactly the same situation here - only twrp 2.2.2.1 or apx-mode with volume+, no other boot-options...
@nverhaar: i managed to mount my sd-card after reformatting it (fat32) fix permissions in twrp advanced menu and wiping evrything. no chace to install a new system though, when trying to flash www_epad-user-9.4.5.30.zip (or any other...) it starts finding opening installing but ends up with
assert failed:write_raw_image "staging"
E:error in (external ...zip
status 7
unable to mount /cache (tw_mount)
Have you tried to install the naked drivers to see if they recognize your device?
pietpodlood said:
If you are able to enter fastboot, (it's the USB icon of the 4), you may be in luck, you could for instance try intalling ClockworkMod Recovery, which is compatable with Jellybean, you could try flashing a stock firmware... I wouldn't start using my tablet as a coaster just yet...
Click to expand...
Click to collapse
Four icons?
I only have (r to l) Android, fastboot (USB icon), Factory wipe..

MY tf700 isn't working

my tf700 showing the screen of asus in white ( like when you turn it on )
and get stuck on it..
i cant enter it to recovery .. i haven't recovery ..
when i press power and volume dn it doesn't shows the screen of wipe data..
what i can to doooo :crying::crying::crying::crying:
What did you do?
Because I highly doubt this miraculously happened for no reason whatsoever...
I tried to flash the pardroid android rom and he gave me an error and then I wiped the data, tried to download an other twrp recovery, then I tried to enter recovery mode and... He won't turned up..
Only at the first screen( what I already mentioned )
JusTeN_ said:
I tried to flash the pardroid android rom and he gave me an error and then I wiped the data, tried to download an other twrp recovery, then I tried to enter recovery mode and... He won't turned up..
Only at the first screen( what I already mentioned )
Click to expand...
Click to collapse
What recovery version you had when you do the wipe? and what twrp version you tried to install after?
Did you wipe data from the bootloader? Depending upon which custom recovery you were running and which bootloader you have you might be in trouble.......
Do you know which versions you had?
I had the touch cwm recovery and it didn't work with the Rom then i downloaded from goo master the TWRP recovery 2.5.0.0 ...
i cant turn on the pad or put it on recovery mode, only APX mode, can i restore it from apx mode ? plz helpppp
JusTeN_ said:
I had the touch cwm recovery and it didn't work with the Rom then i downloaded from goo master the TWRP recovery 2.5.0.0 ...
i cant turn on the pad or put it on recovery mode, only APX mode, can i restore it from apx mode ? plz helpppp
Click to expand...
Click to collapse
If you don't have nvflash backups then unfortunately you can't restore from apx mode.
Can you answer the question - which bootloader were you on and where did you wipe from? In recovery or in the bootloader?
sbdags said:
If you don't have nvflash backups then unfortunately you can't restore from apx mode.
Can you answer the question - which bootloader were you on and where did you wipe from? In recovery or in the bootloader?
Click to expand...
Click to collapse
boot loader is the version ? i was in JB 4.2.1 i think..
i wiped it from the CWM or Twrp.. im not sure..
all day long i looked for guides in the net.. there are so many people that stuck on the boot logo...
but i didn't find any solve for me...
plz help me !!
JusTeN_ said:
boot loader is the version ? i was in JB 4.2.1 i think..
i wiped it from the CWM or Twrp.. im not sure..
all day long i looked for guides in the net.. there are so many people that stuck on the boot logo...
but i didn't find any solve for me...
plz help me !!
Click to expand...
Click to collapse
Did you do a full wipe from CWM? Dansrule32 posted about a possible brick in the CMM thread, have a look there.
sbdags said:
Did you do a full wipe from CWM? Dansrule32 posted about a possible brick in the CMM thread, have a look there.
Click to expand...
Click to collapse
i did a factory reset and a salvik wipe..
can you give me a link plz?
It's in the dev forum - page 2 I think. Look for the ClockWorkMod Recovery thread.
sbdags said:
It's in the dev forum - page 2 I think. Look for the ClockWorkMod Recovery thread.
Click to expand...
Click to collapse
i found only Twrp recovery. and it ain't helped me..
what can i do to device from apx mode?
restore? burn rom ? something?
JusTeN_ said:
i found only Twrp recovery. and it ain't helped me..
what can i do to device from apx mode?
restore? burn rom ? something?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=40698998#post40698998
Post 157
Anyway I don't think it's going to help as if you only have APX mode and can't get into the bootloader or recovery then you are bricked
Nothing going ot get you out of that unfortunately if you didn't backup with nvflash......
Sorry.
sbdags said:
http://forum.xda-developers.com/showthread.php?p=40698998#post40698998
Post 157
Anyway I don't think it's going to help as if you only have APX mode and can't get into the bootloader or recovery then you are bricked
Nothing going ot get you out of that unfortunately if you didn't backup with nvflash......
Sorry.
Click to expand...
Click to collapse
Then my tablet is gone?
You have a warranty?
JusTeN_ said:
Then my tablet is gone?
Click to expand...
Click to collapse
If you are unable to get to the boot loader, or recovery, then yes the tablet is bricked. APX mode does not allow access to the parts containing the recovery or boot loader. If you can get to the boot loader, aka holding down power button and volume down button, should be able to see what boot loader you have a flash a compatible recovery. If not, then your tablet is bricked, which seems to be the case.
Tylor
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
ROM: Cromi-X 4.3
Kernal: Hundsbuah's V3.0.5 Kernal
Tylorw1 said:
If you are unable to get to the boot loader, or recovery, then yes the tablet is bricked. APX mode does not allow access to the parts containing the recovery or boot loader. If you can get to the boot loader, aka holding down power button and volume down button, should be able to see what boot loader you have a flash a compatible recovery. If not, then your tablet is bricked, which seems to be the case.
Tylor
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
ROM: Cromi-X 4.3
Kernal: Hundsbuah's V3.0.5 Kernal
Click to expand...
Click to collapse
I have the warranty but it rooted then no.. but they can't turn it on ..
if i give the tab to Asus and play like i dont know what is root ( im 12 years old ) and looks like 10
they will fix it to me and after it know that i have root.. what they gonna do afteR?
They know from when you used the unlock tool it matches up with your serial
KinetiClutch said:
They know from when you used the unlock tool it matches up with your serial
Click to expand...
Click to collapse
then they know my device is rooted?
JusTeN_ said:
then they know my device is rooted?
Click to expand...
Click to collapse
They only care about unlock, (if unlocked, your device SN is registered in their database, they don't need to check your device, but you can get away if just rooted since your device is dead.

[Q] Help w/Twrp Install

I'm in a bootloop mentally and technically! I've spent days trying to install Twrp, searching the forum, watching videos... Think I've tried most guides two or three times w/o success. From GooManager/Install OpenRecoveryScript it starts downloading and then aborts w/a "false MD5 blob" pop-up. When I tried to install directly I had a validated MD5.
This is not a very helpful description of the problem but I'm so brain-drained that I really can't recall all the different things I've tried. Amazed I've not bricked the thing! Am just hoping someone can point me in the right direction.
TF700T, v.4.0.3, Kernel 2.6.39.4.
I just checked the posts "suggested" last night when I posted in the wrong form and I've been to them all except the one about using motochopper to root and then using GooManager to install Twrp recovery. I'm already rooted. Should I unroot and reroot w/motochopper?
cBirdR said:
I'm in a bootloop mentally and technically! I've spent days trying to install Twrp, searching the forum, watching videos... Think I've tried most guides two or three times w/o success. From GooManager/Install OpenRecoveryScript it starts downloading and then aborts w/a "false MD5 blob" pop-up. When I tried to install directly I had a validated MD5.
This is not a very helpful description of the problem but I'm so brain-drained that I really can't recall all the different things I've tried. Amazed I've not bricked the thing! Am just hoping someone can point me in the right direction.
TF700T, v.4.0.3, Kernel 2.6.39.4.
I just checked the posts "suggested" last night when I posted in the wrong form and I've been to them all except the one about using motochopper to root and then using GooManager to install Twrp recovery. I'm already rooted. Should I unroot and reroot w/motochopper?
Click to expand...
Click to collapse
Is your bootloader unlocked? See http://teamw.in/project/twrp2/105 "You need to be bootloader unlocked to use custom recoveries."
taaz69 said:
Is your bootloader unlocked? See http://teamw.in/project/twrp2/105 "You need to be bootloader unlocked to use custom recoveries."
Click to expand...
Click to collapse
Pretty sure I've already tried this. Page looks very familiar, but I will try "carefully" try it again. Thank you.
cBirdR said:
Pretty sure I've already tried this. Page looks very familiar, but I will try "carefully" try it again. Thank you.
Click to expand...
Click to collapse
If you don't see"This device is unlocked" top left when you boot, you are not unlocked and cannot install a custom recovery
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
taaz69 said:
Is your bootloader unlocked? See http://teamw.in/project/twrp2/105 "You need to be bootloader unlocked to use custom recoveries."
Click to expand...
Click to collapse
taaz69, having the same problem I had b/4 following the "Recovery Image/Fastboot Method" on the link you furnished:
When I boot into fastboot (power on volume down) the only options that appear are two icons, "Wipe Data" and "Android". There is no usb icon to select.
Following "ADB/Terminal method" with terminal emulator or with adb it seems to be doing something, but I still cannot boot into the bootloader...same two "Wipe Data" and "Android" icons.
berndblb said:
If you don't see"This device is unlocked" top left when you boot, you are not unlocked and cannot install a custom recovery
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
Click to expand...
Click to collapse
berndbld, so no "unlocked" notification. Does this mean I cannot install Twrp and use GooManager? Where do I go from here?
cBirdR said:
taaz69, having the same problem I had b/4 following the "Recovery Image/Fastboot Method" on the link you furnished:
When I boot into fastboot (power on volume down) the only options that appear are two icons, "Wipe Data" and "Android". There is no usb icon to select.
Following "ADB/Terminal method" with terminal emulator or with adb it seems to be doing something, but I still cannot boot into the bootloader...same two "Wipe Data" and "Android" icons.
berndbld, so no "unlocked" notification. Does this mean I cannot install Twrp and use GooManager? Where do I go from here?
Click to expand...
Click to collapse
You can download the Asus Unlock app V8 from Asus website.. You need to install it on your device and open it. It will walk you through the whole process. It is very quick and easy.. Good luck. :fingers-crossed:
cBirdR said:
taaz69, having the same problem I had b/4 following the "Recovery Image/Fastboot Method" on the link you furnished:
When I boot into fastboot (power on volume down) the only options that appear are two icons, "Wipe Data" and "Android". There is no usb icon to select.
Following "ADB/Terminal method" with terminal emulator or with adb it seems to be doing something, but I still cannot boot into the bootloader...same two "Wipe Data" and "Android" icons.
berndbld, so no "unlocked" notification. Does this mean I cannot install Twrp and use GooManager? Where do I go from here?
Click to expand...
Click to collapse
Yeah, like LetMeKnow said, you have to unlock your tab using the Asus Unlock tool.
The info on the TWRP site is somewhat outdated and refers to the JB 4.1 bootloader. Under JB 4.2,
if you boot into the bootloader menu, you are already in fastboot mode by default. Under 4.1 you would select the USB icon to start fastboot. Oh, btw, if you boot with Power and Volme Down, you ARE in the bootloader...
I do hope you have RCK in addition to the Android and Wipe Data in your bootlaoder menu! Otherwise something is seriously wrong here!
Once you unlocked you will be able to use GooManager or the ADB method to flash TWRP.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
berndblb said:
I do hope you have RCK in addition to the Android and Wipe Data in your bootlaoder menu! Otherwise something is seriously wrong here!
Click to expand...
Click to collapse
IIRC the old 9.4.x bootloader used some other way to boot to recovery.
@cBirdR: if your firmware version is still 9.4.5.26 or earlier, be sure to read the thread about NVFlash *before* you install anything and create your blobs for unbricking.
_that said:
IIRC the old 9.4.x bootloader used some other way to boot to recovery.
@cBirdR: if your firmware version is still 9.4.5.26 or earlier, be sure to read the thread about NVFlash *before* you install anything and create your blobs for unbricking.
Click to expand...
Click to collapse
The 9.4.x bootloader was alsmost the same as the new bootloader, the only difference is that it had 4 options (fastboot, recovery, coldboot and wipe data) instead of 3.And iirc if the device was locked the fastboot option (USB icon) was hidden but the recovery was always there (RCK icon).
LetMeKnow said:
You can download the Asus Unlock app V8 from Asus website.. You need to install it on your device and open it. It will walk you through the whole process. It is very quick and easy.. Good luck. :fingers-crossed:
Click to expand...
Click to collapse
Forestalling further ****ups, Asus says V8 is for 4.2 JB. I'm still on 4.0.3 ICS. Shouldn't I be using the V7 Unlock Device App?
cBirdR said:
Forestalling further ****ups, Asus says V8 is for 4.2 JB. I'm still on 4.0.3 ICS. Shouldn't I be using the V7 Unlock Device App?
Click to expand...
Click to collapse
@cBirdR: Did you see _that's post? Stop what you are doing and check your firmware version! If you have .26 or earlier, you are in a very enviable position! You cannot use NVflash on later firmware versions.
Think long and hard about letting this opportunity pass.....
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
Yes, read _that's post, but my build is 9.4.5.30 so thought did not apply to me. Closed the window I had open on NVflash. Are you saying I should not use the Asus apk?
cBirdR said:
Yes, read _that's post, but my build is 9.4.5.30 so thought did not apply to me. Closed the window I had open on NVflash. Are you saying I should not use the Asus apk?
Click to expand...
Click to collapse
No you are ok. Your one build too late to enjoy an unbrickable tablet
Go ahead, use the tool to unlock and proceed as planned.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
berndblb said:
No you are ok. Your one build too late to enjoy an unbrickable tablet
Go ahead, use the tool to unlock and proceed as planned.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
Click to expand...
Click to collapse
Well, I've finally got Twrp installed, but cannot reboot into recovery from GooMgr or Clock Mode, only via the bootloader. I was re-reading you guys' posts and your #7 says it all. No RCK. I tried downloading it with Clock Mod, indicated success but nothing changed.
Twrp's Reboot Menu only lists System and Power Off, no Recovery or Bootloader option. But Clock Mode Recovery says current recovery is TWRP. Is it time for me to head for the Twrp forum? I know it's time to donate.
cBirdR said:
Well, I've finally got Twrp installed, but cannot reboot into recovery from GooMgr or Clock Mode, only via the bootloader. I was re-reading you guys' posts and your #7 says it all. No RCK. I tried downloading it with Clock Mod, indicated success but nothing changed.
Twrp's Reboot Menu only lists System and Power Off, no Recovery or Bootloader option. But Clock Mode Recovery says current recovery is TWRP. Is it time for me to head for the Twrp forum? I know it's time to donate.
Click to expand...
Click to collapse
I have not used Goo and CM. Therefore, I don't know what they have on their boot menu. About the TWRP reboot menu, there are only two options. One is System and other is Power Off.. If you want to boot into the bootloader, you need to use the power button + volume down when your device is in the off state. Also, if you have the latest bootloader, you should see three icons: RCK, Android, and Wipe..
LetMeKnow said:
I have not used Goo and CM. Therefore, I don't know what they have on their boot menu. About the TWRP reboot menu, there are only two options. One is System and other is Power Off.. If you want to boot into the bootloader, you need to use the power button + volume down when your device is in the off state. Also, if you have the latest bootloader, you should see three icons: RCK, Android, and Wipe..
Click to expand...
Click to collapse
You could download Quick boot from the Playstore then you will get the options you want.
maxal said:
You could download Quick boot from the Playstore then you will get the options you want.
Click to expand...
Click to collapse
Thanks for the information. I use power menu from the play store and it also has the soft screen off option..
cBirdR said:
Well, I've finally got Twrp installed, but cannot reboot into recovery from GooMgr or Clock Mode, only via the bootloader. I was re-reading you guys' posts and your #7 says it all. No RCK. I tried downloading it with Clock Mod, indicated success but nothing changed.
Twrp's Reboot Menu only lists System and Power Off, no Recovery or Bootloader option. But Clock Mode Recovery says current recovery is TWRP. Is it time for me to head for the Twrp forum? I know it's time to donate.
Click to expand...
Click to collapse
Let me make sure I understand you correctly:
You have TWRP installed and can boot into it - correct?
Which version of TWRP?
I have no idea what Clock Mod is and I wouldn't use GooManager for anything but installing TWRP.
As _that said, the ICS bootloader may have had a different way to boot into recovery, I don't know - I did not have ICS on this tab ever. But if you can boot into TWRP (hopefully version 2.5, 2.6 will do in a pinch) it does not matter.
If all that is true, select 'Backup' in TWRP and make a nandroid of your current setup. And I assume you have backed up all personal data, pictures, videos etc to an external SD card anyway.....
Assuming you want to run a custom rom, go to the OP of the CROMi-X thread, download and flash the 10.6.1.14.8 bootloader/TWRP 2.5 package and then boot back into system which should happen automatically, but if it doesn't, just boot back into system once.
Boot back into TWRP, select 'Wipe' and swipe the button to do a factory reset. This is crucial. You do not want to install a JB 4.2.1 based rom without doing a factory reset first.
Go back to the Home page in TWRP, select 'Install', navigate to the CROMi-X 4.7 rom you downloaded to your external card and flash it.
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4
Not very adept w/Multi-Quote!
berndblb: Cannot boot into TWRP from GooMgr. Pauses a bit on the Asus logo then boots normally. Only method to boot into TWRP is power off, boot w/ boot with Power and Volume Down, b/4 the three icons Wipe, USB, Android appear, push power down and it boots into TWRP (version 2.6.0.0). Not going to try the second part of your post re OP of CROMi-X thread until I see what you have to say this.
ClockworkMod (ROM Manager), koushikdutta developer. I'm sure you know it.
LetMeKnow and Maxal:
TWRP on my Nexus7 has four choices under the Reboot Menu: System, Power Off, Recovery and Bootloader. TWRP on TF700T only System and Power Off. Also there is no RCK icon when
I did get a backup last night using TWRP.
I've used Quick boot for years and cannot boot into recovery thru it...same result as when try to reboot into recovery w/GooMgr.
Appreciation to you all.
cBirdR said:
Not very adept w/Multi-Quote!
berndblb: Cannot boot into TWRP from GooMgr. Pauses a bit on the Asus logo then boots normally. Only method to boot into TWRP is power off, boot w/ boot with Power and Volume Down, b/4 the three icons Wipe, USB, Android appear, push power down and it boots into TWRP (version 2.6.0.0). Not going to try the second part of your post re OP of CROMi-X thread until I see what you have to say this.
ClockworkMod (ROM Manager), koushikdutta developer. I'm sure you know it.
LetMeKnow and Maxal:
TWRP on my Nexus7 has four choices under the Reboot Menu: System, Power Off, Recovery and Bootloader. TWRP on TF700T only System and Power Off. Also there is no RCK icon when
I did get a backup last night using TWRP.
I've used Quick boot for years and cannot boot into recovery thru it...same result as when try to reboot into recovery w/GooMgr.
Appreciation to you all.
Click to expand...
Click to collapse
It is odd. RCK is a part of your bootloader. If it is not there, then something is wrong with your bootloader. It just my understanding about the bootloader. I am wrong so many times about the Android OS. So please don't take it seriously until some experts confirm it.. If you screw up your bootloader, I don't think there are many options for you to fix it. Now you still can access to it. I would suggest that you do a factory reset and download the full latest firmware from Asus website and update your bootloader.. It just my opinion. I am very sure some experts here will chime in and give you a better instructions or guides.. Good luck.

[Q] my TF300T keeps restarting over and over after upgrading to android 4.2.2

hi there
my asus tansformer tf300t docking mobile keeps restarting over and over again after upgrading to android 4.2.2
is there any way to fix this problem or i have to downgrade it to latest version?if i do,how can i downgrade it.please tell me the safest way cause i'm completely new in android stuff
thx
ST46 said:
hi there
my asus tansformer tf300t docking mobile keeps restarting over and over again after upgrading to android 4.2.2
is there any way to fix this problem or i have to downgrade it to latest version?if i do,how can i downgrade it.please tell me the safest way cause i'm completely new in android stuff
thx
Click to expand...
Click to collapse
Stock ROM and locked bootloader? Did you try factory resetting or reflashing your ROM?
did factory reset but not rom
cmendonc2 said:
Stock ROM and locked bootloader? Did you try factory resetting or reflashing your ROM?
Click to expand...
Click to collapse
yes i did factory reset a few times but it keeps restarting but didn't reflash my rom and dont know how to do it.i tried to hold down the decrease volume key and pressing power key to load usb fast bool loader and it tries and downloads a fast boot loader driver but after that it shows a broken droid and says error.
ST46 said:
yes i did factory reset a few times but it keeps restarting but didn't reflash my rom and dont know how to do it.i tried to hold down the decrease volume key and pressing power key to load usb fast bool loader and it tries and downloads a fast boot loader driver but after that it shows a broken droid and says error.
Click to expand...
Click to collapse
If you have fastboot working, you can try this:
http://www.theandroidsoul.com/how-to-restore-asus-transformer-tf300t-back-to-stock/
Alternatively, you can try this:
manikkumar20 said:
Dear all users of TF300T.
If you are using Stock ROM (Rooted/Non Rooted) and are bricked or stuck on ASUS boot screen. Then this guide is for you.
As i was using stock ROM (ROOTED) with Locked boot loader without custom recovery and my tf300t was Sofbricked due to wrong configurations at Display Pixel scaling and also reformat did not work for me.!
So i thought to create this guide which may help people out here It worked for me Try your LUCK.
Sorry if i am re posting i did not got any guides out here...
If this helped you please give me a Thumbs up.!
Steps:-
1. Download the latest ROM from ASUS website Which matches your SKU.(Important).
It would look somehing like this (TF300T-TW_epad-10_6_1_15_3-UpdateLauncher . zip)
2. Extract it and rename that file to ( EP201_768_SDUPDATE.zip )
3. Now copy this new renamed file to SDCARD (Root of sd card). Put the SDcard into tablet.
4. Now Press and hold Volume Down + Power for a few seconds. Then you will see the ASUS recovery options.
5. 3 icons will appear: RCK, Android, and Wipe Data. The RCK should be flashing green. Press the UP Volume Key Once.
Now wait for a few minutes. It will flash the ROM.
And wola! Your TF300T will again work fine!!
Click to expand...
Click to collapse

[Q] TF700T strange brick

Hi guys!
I have a TF700T... and i used to follow Cromi-X JB... Then i changed to 4.4 Cromi-kk... and it started looping...
I've then tried to flash Cromi-x jb back again and the boot loop continued...wiped out cache/data and still nothing... re-flashed rom and it entered on an Android Menu said that the system was currupted and had to get back to recovery to flash stock... now i can't enter de icons boot to enter recouvery... every hard reset/ shutdown just goes directly to CWM and android Dude shows up trying to reset but it stays dad way forever... can't do nothing
help ?
The only think i see after tryind to enter recouvery is what u see in attach jpg...
thanks!
Versions, versions, versions...
Bootloader?
Recovery?
Looks as if the recovery is still trying to finish something. Did you interrupt a wipe or format?
Do you have adb access in recovery?
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