SOLVED! [Q] Bootloader update failed - Asus Transformer TF700

I am trying to update the boot loader to 10.6.1.14.10 (I am on 10.6.1.14.4).
The tablet is rooted and unlocked, I am playing around with different roms and wanted to make sure I was on the most recent bootloader.
I have downloaded it twice and I am using TWRP to try to flash it. Every time I try it says "failed"
Am I missing something?
Appreciate any help.
Thanks
Jim

Found it.
Found the answer here:
http://forum.xda-developers.com/transformer-tf700/help/firmware-manual-flash-t2858019
At least I hope so, tablet is rebooting now.
Guess I just had to dig a little deeper!!

Related

Need some quick help

So it had been quite some time since I tried messing with my tf300 so....
I was on cm-9, when to update to cm-10.1, tried to update twrp then it wouldn't boot to recovery, tried to flash back to stock JB bootloader using "fastboot flash system.blob" gave me a flash error (invalid size) and for some reason fastboot doesnt recognize my device.
So I have no recovery and no rom.
I tried "fastboot boot boot.blob" from cm-9 and cm-10 and it wont boot. just stuck on "waiting for device"
When I type "fastboot devices" it just starts a new command line, no serial number.
I can include any information needed to help my situation, I just need to be told where to look.
To be honest, I couldn't remember what bootloader I was on. It had been a while. Is there a way to tell?
Can't get the tablet to stay off either while I wait for help. Lol
Sent from my LG-LS970 using xda premium
Any ideas?
Sent from my LG-LS970 using xda premium
Now I think my situation might have gotten worse.
I can't get into fastboot now. It just keeps trying to go into recovery mode but there is no recovery so it just continuously reboots.
No one can help?
Sent from my LG-LS970 using xda premium
Well that sucks...
Sent from my LG-LS970 using xda premium
Depends on what you were trying to do, were you trying to update the recovery first and to what version. I believe cm 9 is based on an older build of bootloader. What exactly did you do. From my knowladge as to reading and seeing so many people just flashing before reading the threads you should first update the bootloader then the recovery depending on what recovery version you were trying to update to. From what it sound like you tried to update the recovery before bootloader just not sure what version of recovery but if wrong one and didnt update bootloader sounds like you maybe un recoverably bricked like what everyone else is doing before reading and as of now. Aslo if you have an nvflash backup there may be a fix i'm just not sure how as i never had it but accorging to some it seems that was the only hope for them to get out. Reaad the threads there maybe help on here some where just so many are flashing and bricking before reading people are getting frustrated because theres no help for it.
I know it doesn't help, but since you wanted to know what happened, I can tell you that much. Since you were on CM9, you had to be on the original ICS bootloader. Stock JB can't be fastboot-flashed over ICS because of changes to the partitioning and other low-level stuff, which is why it wouldn't flash and why it subsequently failed to boot.
I'm also just picking up my TF300 for the first time since August. I just recovered from a soft-brick today (my story, which in hindsight was a complete f-up on my part), which was why I hadn't been using it. I ended up fastboot-flashing the newest ICS firmware (I actually tried it back in August, but fastboot wouldn't work; I didn't do anything differently today, but fastboot had been updated recently and magically worked), then performing the NVFlash backups from the sticky thread (this isn't quite where our paths diverged, but it may have been a good idea to do that before you tried upgrading to JB -- not that it helps now, but for future reference).
Like you, I tried fastboot-flashing the stock JB firmware over the ICS firmware and got the same error you got. So, I tried flashing the ICS firmware again, but got the same Invalid Size error. At this point, my tablet wouldn't boot past the splash screen (not the animation with the spinner; the first one with the NVidea logo in the corner), and fastboot wouldn't flash any firmware.
This next part is the part where our stories more-or-less fork.
Faced with another soft brick just hours after fixing one, I fastboot-flashed TWRP instead (made sure to use an ICS version since the JB firmware didn't flash, and the NVFlash bootloader I had was based on the ICS bootloader), which worked, and I booted into recovery. I used TWRP to flash the ICS firmware (I actually had it on my internal SD card in August, but I could have also pushed it with ADB if I didn't already have it), and I got a functioning tablet again.
Next, to upgrade to Jellybean correctly, I booted into Android and used ADB to push the Jellybean firmware to my tablet. I put it on the root of the internal storage, and the tablet saw it and alerted me to the update. Since TWRP had been replaced by the stock recovery when I flashed the ICS firmware, I just let the tablet do its thing with the update, and I ended up with a perfectly-functioning stock Jellybean ROM. I then performed each subsequent update (I never once skipped any update steps) the same way until I was on the newest 4.1.1 firmware (I'm not updating to 4.2.1 until CM10.1 works with it).
I'm not sure how much research you did before you updated your tablet, but I was trolling the TF300 forums for a good 2 or 3 hours before I even tried upgrading, and I still had trouble (I never saw any posts about people trying to fastboot-flash JB over ICS, so I didn't know it wouldn't work until I tried it at least 3 times). From the limited details you provided, it doesn't sound like you did much searching before you started flashing. In the future, it may be a good idea to research a lot more than you think you have to before flashing things on expensive devices.
Also, in the future, when you're asking for help like this, it's best to go overboard on the details - just like a murder investigation, we want to help you figure out what killed your tablet, but we can't do that if you don't tell us about the strange footprints you saw in your neighbor's lawn the night before. Mention every single icon or word that appears on the tablet, every single button-press you've made, every keystroke you've typed, etc., whether it seems important or not. We can't be there with you, so you have to bring your situation to us.
At this point, the only advice I can give is to let the tablet die, charge it again (so the battery's full but the tablet's powered off), and try again when the battery's full. If you can get ADB to work while the tablet is trying to boot recovery, you may be able to flash a new recovery and then try flashing the ICS firmware (flashing the JB firmware might work, but then you can't use NVFlash). That's about the best you can do if you can't get it into fastboot mode (short of RMAing your tablet). If you can get fastboot to work somehow, then you can easily flash a new recovery and follow the steps I took. But if you do get your tablet booting with the ICS firmware, perform the NVFlash backups ASAP before you update to Jellybean.
I hope you can get your tablet to work. I thought mine was a goner until I got lucky with an updated fastboot. Now, I'm ecstatic that it works, and I'm going to be a lot more careful in the future.

Unable to flash Androwook 2.2

Hi,
I've come here as last resort, been trying to upgrade to Androwook 2.2 but always getting stuck in bootloop on Asus load screen. I'll try and be as detailed as possible concerning what I've already tried, but please bear with me as I'm quite a beginner with Android;
I'm currently running Androwook 2.11 on my TF700, but I'm getting some small issues such as frequent Google Play crashes and random restarts, it's livable but I wanted to upgrade to 2.2, which seems to have quite a lot of fixes compared to 2.11.
My Infinity is unlocked and rooted, I've done a complete nandroid backup using TWRP 2.6. which I pushed using ADB/Fastboot method, but there is something I don't quite understand; when I boot into bootloader using volume down and power buttons, I only see 3 icons, the USB icon is missing from the lot. Message on the top left says "Key driver not found... Booting OS, Android cardhu-user bootloader <1.00 e> released by "ww_epad-10.6.1.14.4-20130329" A03, Satrting Fastboot USB download protocol". Funny thing is that running the "adb devices" command from my Windows 7 Ultimate PC results in a blank "List of devices attached" message, but when running the "fastboot -i 0x0B05 flash recovery twrp.blob" it actually flashes the device correctly. Furthermore, when running "adb devices" while booted into the OS, the device is recognized but indicated as offline. Is the fact that I'm not seeing the USB icon in bootloader a problem or is it ok as fastboot still seems to work?
Anyway I download and copy the "13683789011409181222_Hairybean 2.2".zip file to my external SD card, follow the full instructions as indicated on the official Androwook XDA thread, installation is successfull but on reboot I always go into the Asus logo bootloop. I've left this running for about 30 minutes with no success, the Rom just doesn't boot up.
So I started searching the forums for solutions and tried what I could find; found some guys saying that checking the "Install custom boot animation" box during the Androwook setup before the installation seemed to have gotten them out of bootloop, but didn't work for me. I've of course tried to redownload the Hairybean 2.2 zip file thinking that it might have gotten corrupted but 3 different download locations and still no success.
I'm thinking that pushing Androwook 2.2 via ADB/Fastboot might help, but I'm not quite sure of exactly how to do that, anyone think it's worth a try?
I can't list exactly everything I've tried to get this working as I've been trying for about a month now, but believe me, I've spent a lot of time searching and trying, to no avail. So I would really appreciate it if someone could take the time to accompany me to Androwook 2.2, back to 2.11 and really getting frustrated now
Thanks in advance!
Foolmax said:
Hi,
I've come here as last resort, been trying to upgrade to Androwook 2.2 but always getting stuck in bootloop on Asus load screen. I'll try and be as detailed as possible concerning what I've already tried, but please bear with me as I'm quite a beginner with Android;
I'm currently running Androwook 2.11 on my TF700, but I'm getting some small issues such as frequent Google Play crashes and random restarts, it's livable but I wanted to upgrade to 2.2, which seems to have quite a lot of fixes compared to 2.11.
My Infinity is unlocked and rooted, I've done a complete nandroid backup using TWRP 2.6. which I pushed using ADB/Fastboot method, but there is something I don't quite understand; when I boot into bootloader using volume down and power buttons, I only see 3 icons, the USB icon is missing from the lot. Message on the top left says "Key driver not found... Booting OS, Android cardhu-user bootloader <1.00 e> released by "ww_epad-10.6.1.14.4-20130329" A03, Satrting Fastboot USB download protocol". Funny thing is that running the "adb devices" command from my Windows 7 Ultimate PC results in a blank "List of devices attached" message, but when running the "fastboot -i 0x0B05 flash recovery twrp.blob" it actually flashes the device correctly. Furthermore, when running "adb devices" while booted into the OS, the device is recognized but indicated as offline. Is the fact that I'm not seeing the USB icon in bootloader a problem or is it ok as fastboot still seems to work?
Anyway I download and copy the "13683789011409181222_Hairybean 2.2".zip file to my external SD card, follow the full instructions as indicated on the official Androwook XDA thread, installation is successfull but on reboot I always go into the Asus logo bootloop. I've left this running for about 30 minutes with no success, the Rom just doesn't boot up.
So I started searching the forums for solutions and tried what I could find; found some guys saying that checking the "Install custom boot animation" box during the Androwook setup before the installation seemed to have gotten them out of bootloop, but didn't work for me. I've of course tried to redownload the Hairybean 2.2 zip file thinking that it might have gotten corrupted but 3 different download locations and still no success.
I'm thinking that pushing Androwook 2.2 via ADB/Fastboot might help, but I'm not quite sure of exactly how to do that, anyone think it's worth a try?
I can't list exactly everything I've tried to get this working as I've been trying for about a month now, but believe me, I've spent a lot of time searching and trying, to no avail. So I would really appreciate it if someone could take the time to accompany me to Androwook 2.2, back to 2.11 and really getting frustrated now
Thanks in advance!
Click to expand...
Click to collapse
I can only shed a tiny little light on your problem since I am not familiar with Androwook.
JB 4.2 defaults to fastboot mode if and when you boot into the bootloader. So in 4.2 you only have the icons for recovery, Android and Wipe Data.
To use ADB you have to be booted into the rom. Actually, I have read with the correct drivers yo can also use ADB in recovery, but I have never tried that myself.
Just ignore the 'key driver not found'. Every TF700 displays that message when you boot into the BL.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
AndroWook 2.2 works fine on my TF700 and technically it should on yours. It shares the same base as CROMi-X 4.x. Have you tried CROMi-X to see if it boots?
I think flumpster recommended you do a clean install for AndroWook 2.2 as well have you tried that? Also which bootloader are you on? I'm reluctant to recommend TWRP 2.6 just yet as users have reported some problems with it, so I'd also recommend you drop back down to TWRP 2.5.
Thanks for your replies, I was beginning to despair when I saw that my post had 35 views and no replies
@berndblb: Thanks for that confirmation, at least I can stop searching in that direction, it's just that most tutorials, even recent ones, indicate the USB icon, I guess there musn't be many of us on TF700 running JB roms.
@sbdags: nope, haven't tried CROMi-X yet, will do when I get home after work tonight if you think it's worth it, thanks for the tip. Concerning the clean install I've already tried if you mean completely wiping Internal memory via TWRP. I just haven't wiped the SD card as it was containing the rom.
Concerning the bootloader I thought I had given the version in my first post (Android cardhu-user bootloader <1.00 e> released by "ww_epad-10.6.1.14.4-20130329" A03), isn't that it? I know the bootloader could be an issue as originally I installed it with a pack destined to the TF300, that might be something I could try, but which bootloader shoul I install and what is the best method for installing it? If that isn't my bootloader version where can I find it?
I know what you mean with TWRP 2.6, I'm ususally also very carefull with new versions, but have same issue on TWRP 2.5 and 2.4.4 (in fact most of my failed attempts were done on 2.4.4), haven't tried lower yet.
Foolmax said:
Thanks for your replies, I was beginning to despair when I saw that my post had 35 views and no replies
@berndblb: Thanks for that confirmation, at least I can stop searching in that direction, it's just that most tutorials, even recent ones, indicate the USB icon, I guess there musn't be many of us on TF700 running JB roms.
@sbdags: nope, haven't tried CROMi-X yet, will do when I get home after work tonight if you think it's worth it, thanks for the tip. Concerning the clean install I've already tried if you mean completely wiping Internal memory via TWRP. I just haven't wiped the SD card as it was containing the rom.
Concerning the bootloader I thought I had given the version in my first post (Android cardhu-user bootloader <1.00 e> released by "ww_epad-10.6.1.14.4-20130329" A03), isn't that it? I know the bootloader could be an issue as originally I installed it with a pack destined to the TF300, that might be something I could try, but which bootloader shoul I install and what is the best method for installing it? If that isn't my bootloader version where can I find it?
I know what you mean with TWRP 2.6, I'm ususally also very carefull with new versions, but have same issue on TWRP 2.5 and 2.4.4 (in fact most of my failed attempts were done on 2.4.4), haven't tried lower yet.
Click to expand...
Click to collapse
Do me a favour go to my CROMi-X thresd (linked in my sig) for the TF700 and download and install the bootloader and recovery package for your SKU. This will give you a working bootloader on 10.6.1.14.8 and TWRP 2.5
Then we can take it from there.
sbdags said:
Do me a favour go to my CROMi-X thresd (linked in my sig) for the TF700 and download and install the bootloader and recovery package for your SKU. This will give you a working bootloader on 10.6.1.14.8 and TWRP 2.5
Then we can take it from there.
Click to expand...
Click to collapse
It'll be done tonight as soon as I get home, thanks for your time, I'll keep you posted ASAP.
Well, your advice worked; thanks a lot! Only thing is that Androwook still won't install but your Rom does, I'm busy testing it at the moment to see if it suits me, might stay on it, so far so good (well done for that work!)
Downloaded the 10.6.1.14.8 WW Bootloader and TWRP 2.5.0.0, dropped it on my SD card and flashed it via Recovery. I immediately tried to flash Androwook again after the successfull installation of the bootloader and recovery, but same thing happened; bootloop on ASUS screen. One of the things I haven't tried yet is to Wipe Cache/Delvik after the Rom installation, before the reboot to the actual Rom, could that make a difference?
Noticed two things when installing the above package via TWRP though; you say the install should last about a minute, on my device in 20 seconds it was done, blue bar just progressed in two phases; once until halfway and full almost 10 seconds later. In TWRP, after each message during the installation process I'm getting a "Done" line, but on the last command, which is "updating partition details", I'm not getting the "Done" confirmation, it just stays on that last line. Same when I click the top right icon (right of "back" and "home" buttons buttons on TWRP Home screen); it starts updating partitions but freezes right there, have to restart tablet with power button to get back in Recovery. Could there be something screwed up in my partitions?
Foolmax said:
Well, your advice worked; thanks a lot! Only thing is that Androwook still won't install but your Rom does, I'm busy testing it at the moment to see if it suits me, might stay on it, so far so good (well done for that work!)
Downloaded the 10.6.1.14.8 WW Bootloader and TWRP 2.5.0.0, dropped it on my SD card and flashed it via Recovery. I immediately tried to flash Androwook again after the successfull installation of the bootloader and recovery, but same thing happened; bootloop on ASUS screen. One of the things I haven't tried yet is to Wipe Cache/Delvik after the Rom installation, before the reboot to the actual Rom, could that make a difference?
Noticed two things when installing the above package via TWRP though; you say the install should last about a minute, on my device in 20 seconds it was done, blue bar just progressed in two phases; once until halfway and full almost 10 seconds later. In TWRP, after each message during the installation process I'm getting a "Done" line, but on the last command, which is "updating partition details", I'm not getting the "Done" confirmation, it just stays on that last line. Same when I click the top right icon (right of "back" and "home" buttons buttons on TWRP Home screen); it starts updating partitions but freezes right there, have to restart tablet with power button to get back in Recovery. Could there be something screwed up in my partitions?
Click to expand...
Click to collapse
Sorry should have said don't flash the bootloader package and rom at the same time.
Not sure what is going on with the freezing. It doesn't sound quite right. Sorry I don't know the fix.
sbdags said:
Sorry should have said don't flash the bootloader package and rom at the same time.
Not sure what is going on with the freezing. It doesn't sound quite right. Sorry I don't know the fix.
Click to expand...
Click to collapse
Absolutely no need to apologize, you helped me out man, thanks^^
When I said immediately I meant after a reboot, might not be an android expert but I know that rebooting after each process is strongly advised
Anyway, point is; TWRP 2.5 and bootloader are correctly installed (I can do without the partition thingys I guess), and your Rom seems fine and stable, so I'm all fixed basically, I'll just try to avoid flashing new Roms on this tablet, might be a hardware issue.
Another nub question to finish; what is the officail way of marking this thread a solved?
Edit: Just donated a couple of bucks to your account, Rom really seems stable, haven't had a single issue yet, thanks again!
Foolmax said:
Absolutely no need to apologize, you helped me out man, thanks^^
When I said immediately I meant after a reboot, might not be an android expert but I know that rebooting after each process is strongly advised
Anyway, point is; TWRP 2.5 and bootloader are correctly installed (I can do without the partition thingys I guess), and your Rom seems fine and stable, so I'm all fixed basically, I'll just try to avoid flashing new Roms on this tablet, might be a hardware issue.
Another nub question to finish; what is the officail way of marking this thread a solved?
Edit: Just donated a couple of bucks to your account, Rom really seems stable, haven't had a single issue yet, thanks again!
Click to expand...
Click to collapse
Cheers mate for the donation! Glad you got it all sorted!
Darren

[Q] SOLVED: Help - KitKat upgrade from stock... ish.

So, I did a stupid thing this morning. I spent the last, probably, five hours backing up all of my apps and data from my TF300, and once that was all done, I wiped the data on my tablet. "What makes that stupid?" What makes that stupid is, it was a miracle that I ever actually managed to root this thing in the first place, and now, I don't know a) if it's still rooted (I doubt it), and b) if I'm even mentally capable of rooting it again (I doubt it).
So, here's my situation, and if someone could just dumb down the steps for me and point me in the right direction, that's all I need. I got my tablet, I don't know, probably early 2012. I can tell you that the tablet is on ICS 4.0.3, and the build number is 9.4.3.29-20120511. It's also unlocked, I don't know if that needed to be mentioned. Now, things are better since I wiped the data on this mother, but ICS, on this tablet in particular, is slow as balls, and I'm done with it, I want KitKat. But I am so far beyond lost after what I did that if I try to work my own way out of it, I'm going to brick this thing.
I wiped the data because I was trying to do something involving the Fastboot menu or something like that. Whenever I selected the USB icon and hit up on the volume strip, the tablet just locks cold. I figured whatever caused that, would probably go away with a data wipe. It didn't. So now my data's gone, my apps are gone, my tablet's not rooted anymore, I have no idea how to get to KitKat, I can't sleep at night, it burns when I pee... let's focus on the tablet stuff for now, I'm signed up to some forums for the other stuff.
I know most of the people that read this topic will be inclined to say, "You're an idiot, read this, this, and this, and take care of it yourself." I know I'm Androidiot, and I'm humbly asking for help. Again, I'm just petrified of following the wrong topic and ruining the whole thing, so if someone could tell me how I'd go about upgrading my tablet from stock ICS to KitKat, I'd appreciate the hell out of it.
Just a little bump, not too big... no love for Tim?
Normally, you need to install the latest stock ROM from ASUS in order to recover a functional device & by the way upgrade your bootloader.
Things done, you can proceed to install recovery and kitkat.
Better explanations here : http://forum.xda-developers.com/showpost.php?p=53738192&postcount=2
zlazaar said:
Normally, you need to install the latest stock ROM from ASUS in order to recover a functional device & by the way upgrade your bootloader.
Things done, you can proceed to install recovery and kitkat.
Better explanations here : http://forum.xda-developers.com/showpost.php?p=53738192&postcount=2
Click to expand...
Click to collapse
Thank you, Zlazaar!
Well, it seems that after my device was wiped, it still didn't remove CWM as a bootloader or whatever, I don't know what I'm saying. When I hold down the power and volume down buttons, I could wait like ten seconds for fastboot, or I could tap vol up to enter the "RCK" menu. I don't know what that means. But I go into it, and I'm at the CWM menu, I think it was 5.5.0.4. You probably know better than me if I need to do anything further than that with CWM, but I should be good on that, right?
I'm almost going to go to the sites that you mentioned to download files and get more information on how to use it all. I appreciate your help, because without it, I'm sitting on an unrooted stock ROM with only most of my apps, because oh yeah, like 70 apps forgot to transfer with that backup I did... so, whoopee.
Thank you again, buddy!
The goal is kitkat, right ?
So, in order to get it you need 2 important things :
1- The latest bootloader, yours can't handle kitkat.
2- a custom recovery supporting kitkat, i.e i'm using TWRP 2.7.1.0 (link in my signature), your CWM is outdated.
The only way i know to update the bootloader is to flash Stock ROM via fastboot as described in tutorial.
I got some really stupid questions... apparently it's been entirely too long since I've messed with any of this.
What's a bootloader? I know mine's unlocked, but I didn't know there were versions of it. Is it the blob file I got from Asus?
And I have my tablet hooked up to my PC, it's on the fastboot menu wait for input from USB. When I go to the command prompt, I've tried to push TWRP to the device, but when I start a command with "adb push," it just tells me that it doesn't know what to do with that command. Same thing happened with fastboot, but then I realize I didn't have fastboot installed, so I tried to install it and it complained about a missing dll file on my computer, and I think I'm about ready to give up. lol
Here is the driver : Universal Naked Driver
After install, you can use fastboot and complet other steps.
Tim 13 said:
I got some really stupid questions... apparently it's been entirely too long since I've messed with any of this.
What's a bootloader? I know mine's unlocked, but I didn't know there were versions of it. Is it the blob file I got from Asus?
And I have my tablet hooked up to my PC, it's on the fastboot menu wait for input from USB. When I go to the command prompt, I've tried to push TWRP to the device, but when I start a command with "adb push," it just tells me that it doesn't know what to do with that command. Same thing happened with fastboot, but then I realize I didn't have fastboot installed, so I tried to install it and it complained about a missing dll file on my computer, and I think I'm about ready to give up. lol
Click to expand...
Click to collapse
Ok Tim so the GOAL IS: 4.4 KITKAT CORRECT?
This is the process overview. This is a review.
Step 1 Upgrade the bootloader. Why? Inorder to flash a 4.4 rom you need a Jelly Bean 4.2 bootloader. How? Do as zlazarr suggests by flashing the lastest stock version V10.6.1.27.5 on your tf300t. Flashing the latest stock rom will update your bootloader. And here's another helpful guide.
http://www.theandroidsoul.com/how-to-restore-asus-transformer-tf300t-back-to-stock/ Remember that the SKU has to match!
Step 2 Follow this guide.
http://www.transformerforums.com/fo...nstall-roms-tf300-jelly-bean-kitkat-roms.html
It guides you on how to unlock your bootloader which you already have and it shows you how to install twrp. After installing twrp MAKE A BACKUP!
NOTE: If using the command method on the link fails repetitively use the app rashr to install the twrp version in the link
Step 3 Upgrade twrp to vr 2.7.0.0 or higher. Refer to step 2 link on the post about 4.4 kitkat.
Step 4 Install a 4.4 kk rom. I recomend the lastest snapshot of Cyanogen Mod 11. The download is on their wiki.
And then your done! Don't give up! The hardest part I find is using the command prompt! Look for work arounds. AND SEARCH FOR METHODS!
Goodluck
b..c said:
Ok Tim so the GOAL IS: 4.4 KITKAT CORRECT?
This is the process overview. This is a review.
Step 1 Upgrade the bootloader. Why? Inorder to flash a 4.4 rom you need a Jelly Bean 4.2 bootloader. How? Do as zlazarr suggests by flashing the lastest stock version V10.6.1.27.5 on your tf300t. Flashing the latest stock rom will update your bootloader. And here's another helpful guide.
http://www.theandroidsoul.com/how-to-restore-asus-transformer-tf300t-back-to-stock/ Remember that the SKU has to match!
Step 2 Follow this guide.
http://www.transformerforums.com/fo...nstall-roms-tf300-jelly-bean-kitkat-roms.html
It guides you on how to unlock your bootloader which you already have and it shows you how to install twrp. After installing twrp MAKE A BACKUP!
NOTE: If using the command method on the link fails repetitively use the app rashr to install the twrp version in the link
Step 3 Upgrade twrp to vr 2.7.0.0 or higher. Refer to step 2 link on the post about 4.4 kitkat.
Step 4 Install a 4.4 kk rom. I recomend the lastest snapshot of Cyanogen Mod 11. The download is on their wiki.
And then your done! Don't give up! The hardest part I find is using the command prompt! Look for work arounds. AND SEARCH FOR METHODS!
Goodluck
Click to expand...
Click to collapse
Okay, so I've started work on this finally, but I think I might be having some trouble. I flashed the latest stock ROM onto my baby and restarted the tab like the article said, but now it's taking a very long time to load. I don't know if it's supposed to be taking this long, considering I'm pretty sure it wiped the data on it (flashing a ROM wipes data, doesn't it?), so I'd assume that removing the weight of those apps would make startup lightning quick.
I have the ASUS logo and the spinny circle. And it's just spinning and spinning and spinning and spinning. Is this a problem?
I'm going to let it spin spin spin spin spin for like five more minutes, and then I might go cry for a while.
EDIT: I cried too soon, it loaded for a long time then came to a menu that says "Android is upgrading..." and it's optimizing the apps, or apptimizing, that were apparently NOT wiped when I flashed a new ROM. lol, so I'm back on track. So far, so good. Thank you for the detailed guide, I appreciate it!
Further edit: And I'm also done rooting and flashing to KK 4.4. Thank you for dumbass-proofing the process for me, it is incredibly highly appreciated. I didn't kill my tablet!
Tim 13 said:
Okay, so I've started work on this finally, but I think I might be having some trouble. I flashed the latest stock ROM onto my baby and restarted the tab like the article said, but now it's taking a very long time to load. I don't know if it's supposed to be taking this long, considering I'm pretty sure it wiped the data on it (flashing a ROM wipes data, doesn't it?), so I'd assume that removing the weight of those apps would make startup lightning quick.
I have the ASUS logo and the spinny circle. And it's just spinning and spinning and spinning and spinning. Is this a problem?
I'm going to let it spin spin spin spin spin for like five more minutes, and then I might go cry for a while.
EDIT: I cried too soon, it loaded for a long time then came to a menu that says "Android is upgrading..." and it's optimizing the apps, or apptimizing, that were apparently NOT wiped when I flashed a new ROM. lol, so I'm back on track. So far, so good. Thank you for the detailed guide, I appreciate it!
Further edit: And I'm also done rooting and flashing to KK 4.4. Thank you for dumbass-proofing the process for me, it is incredibly highly appreciated. I didn't kill my tablet!
Click to expand...
Click to collapse
Hi Tim13,
I'm glad to hear that everything went well and my guide helped you!:good: And to answer your question flashing doesn't wipe your data. You have to manually wipe it. And lol:laugh::good: that you didn't kill your tab. I hope you find your tab faster and useful again!
It's just as slow and useless as it was. But honestly, the flashing process was fun, and I learned from it. Plus, TWRP and Cyanogen mod are awesome, and now I know that. lol
Great to see you up and running @Tim 13 :good:
Can you add SOLVED to the thread title
Thx Josh
No, I'm not gonna do that.
I'm just kidding. You're all right, darling. :good:
Edit: Actually, not being a douche, I can't figure out how to edit the thread title. I went to edit the first post and I can't change the title of the post... I'm gonna look around for how to do it a bit more but after that I'm gonna go to bed.
DOUBLE EDIT: Got it, as you can see. Thanks to all that helped out!

Help Please - No zip on the device, wiped data ...

Hi guys,
A while ago, I've rooted/unlocked my device in order to install Cyanogenmod, installed PhilZ bootloader. Been running through some versions, never happy with the result - slow response, games not running that well, etc. The last time, I got some new update (can't remember which one though ...) which was the worst nightmare. Without any app running, I thought I was on some Eboda tablet, the cheapest one. Last night I've tried to connect the tablet to my laptop, to put some ebooks on it, without success. Nothing I did convinced the 2 devices to see one another. So, I tried to go back to some previous ROM, boot the device in recovery mode and did a wipe. Forgot that at some point I erased all ROMs from it ... now, I still can't connect to it, so that I can copy some version of ROM, any version, although Windows shows it as installed and connected. Bottom line is that now I got no ROM on the tablet, not installed and also not one that I can install, only got the PhilZ bootloader. Is there any way to get my tablet back or is it bricked ?
You are confusing bootloader and recovery. But as long as you can get to the bootloader *or* to your recovery, it is possible to restore your tablet.
To talk to the bootloader, you need to use fastboot.
To talk to the recovery, you need to use adb.
For more details, read berndblb's comprehensive guide in the General section.
_that said:
You are confusing bootloader and recovery
Click to expand...
Click to collapse
You are right, I have to admit I have not been very thorough the first time I went about this
Thank you very much, I will track down this guide, perhaps I will be able to restore my tablet to some use ...
Hi all,
As it turns out, I had only to push one flashable image (used CM11) and was able to put the tablet back on it's feet. Many thanks to berndblb
Have fun!

OPO recovery boot error.

So, while I was messing around with my phone, I accidentally screwed stuff up. Unfortunately, I decided to get extra stupid and lock my bootloader. So now whenever i try to unlock my bootloader, boot into recovery or basically do anything beyond using CM11s, I get this youtu.be/tuWRHJA50hA. If any of you have any solutions, please help. If you need any extra details, I will be glad to answer. Thanks in advance for the help.
kurroption said:
So, while I was messing around with my phone, I accidentally screwed stuff up. Unfortunately, I decided to get extra stupid and lock my bootloader. So now whenever i try to unlock my bootloader, boot into recovery or basically do anything beyond using CM11s, I get this youtu.be/tuWRHJA50hA. If any of you have any solutions, please help. If you need any extra details, I will be glad to answer. Thanks in advance for the help.
Click to expand...
Click to collapse
You need to provide more information, like a detailed description of exactly what steps lead to this situation.
Heisenberg said:
You need to provide more information, like a detailed description of exactly what steps lead to this situation.
Click to expand...
Click to collapse
I wrote a detailed explanation on the OnePlus forums so here is it copy pasted.
TL;DR: Recovery won't boot, this happens
I've posted this on multiple sites to get as much help as possible. Check /u/braden26 for my posts on reddit about my issue. What I'm having trouble with is a strange issue when entering a recovery. . I'm guessing my recovery is corrupted or nonexistent, due to a few dumb mistakes I made. I first flashed the wrong rom and soft bricked my phone. At this time it was rooted, running cm 12.1 nightlies and using twrp. After this soft brick, I restored to cm11s, unlocked the bootloader and rooted. I installed sultan's cm12.1, but got another weird issue, so I decided to go back to cm12.1. Here's where my issue begins. When I tried to enter recovery, twrp was gone despite developer option for overwriting recoveries was off. So I downgraded to cm11s and tried again. Then it wouldn't install twrp at all. So I erased my recovery and accidentally hit oem lock instead of unlock. When I tried oem unlock after wards, it would reboot then do this which I already showed . The device runs fine, but I can't update cm11s to 12s or I stall custom recoveries. So I'm in a little bit of a problem here. I'm familiar with how to use fastboot, not all the commands, so don't be afraid to give them to me. Thank you for any help and if you need any more details please let me know.
kurroption said:
I wrote a detailed explanation on the OnePlus forums so here is it copy pasted.
TL;DR: Recovery won't boot, this happens
I've posted this on multiple sites to get as much help as possible. Check /u/braden26 for my posts on reddit about my issue. What I'm having trouble with is a strange issue when entering a recovery. . I'm guessing my recovery is corrupted or nonexistent, due to a few dumb mistakes I made. I first flashed the wrong rom and soft bricked my phone. At this time it was rooted, running cm 12.1 nightlies and using twrp. After this soft brick, I restored to cm11s, unlocked the bootloader and rooted. I installed sultan's cm12.1, but got another weird issue, so I decided to go back to cm12.1. Here's where my issue begins. When I tried to enter recovery, twrp was gone despite developer option for overwriting recoveries was off. So I downgraded to cm11s and tried again. Then it wouldn't install twrp at all. So I erased my recovery and accidentally hit oem lock instead of unlock. When I tried oem unlock after wards, it would reboot then do this which I already showed . The device runs fine, but I can't update cm11s to 12s or I stall custom recoveries. So I'm in a little bit of a problem here. I'm familiar with how to use fastboot, not all the commands, so don't be afraid to give them to me. Thank you for any help and if you need any more details please let me know.
Click to expand...
Click to collapse
You were using a toolkit?
Ok, so TWRP didn't initially stick and that's normal since Lollipop came out. It's in the FAQ thread, so doing some research most likely would have saved you from this whole situation. Right now though you're kinda screwed. With no recovery and a bootloader that won't unlock there's pretty much nothing you can do.

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