Develop Bugs

[Q] After installing 5.0.1 on unlocked rooted n7 I can no longer write to sdcard

OK so: I updated my N7(2013) to lollipop 5.0.1 using the Skipsoft toolkit and now I cannot restore my data from a backup on my windows 7 x64 PC.
The N7 is unlocked, rooted, and running lollipop 5.0.1. A few weeks ago the USB port stopped working due to the well-known physical weakness of the N7's USB socket. Fortunately I had made backups and copied them to my PC (windows 7 x 64 up-to-date) via USB just prior to the failure. The backups were a TWRP nandroid made from recovery, a TiBackup of all the apps and app data, and I copied the entire contents of sdcard (/storage/emulated/legacy) to a folder on my pc via drag-and-drop using explorer. (MTP mode on the N7 seen as "Nexus 7\Internal storage" by windows.)
Prior to sending it in for repairs I deleted all my personal data from sdcard, did a factory reset using TWRP recovery, and verified that the phone would boot into android lollipop 5.0.1. I paid iResQ to fix the port, which they did.
When I got it back, I hooked up the N7 to the PC via USB and attempted to copy the files back to sdcard, by dragging them in the opposite direction using explorer. I did not work. "Nexus 7\Internal storage" is read only! I was unable to change the permission on the N7 using explorer. (Apparently since the hated MTP mode makes the PC think that the N7 is not a storage device with permissions). I tried using adb push (did not work). I tried to change the permissions of sdcard on the N7 itself using root explorer (and ES file explorer and xplorer -- did not work). I tried adb shell followed by su then chmod (did not work). I tried "mkdir test" at the su prompt to see if that would work and was told "mkdir failed for test, Read-only file system".
So how do I restore my apps and data? How do I make "/" read-write? Does lollipop make an N7 into a ROM?
I think I'll go back to kitkat.
--------------------------------------
Some hours later~
I tried removing 5.0.1 and went back to kitkat, Android 4.4.4 (KTU84P). I am able to copy files from pc to sdcard via wireless using an explorer on the N7. Nevertheless, using an explorer on the pc I cannot copy a file from it to the n7 via usb . I don't get it. What is going on here?
----------------------------------------
The next day~
It appears to me that the problem with the MTP transfer from the PC to the N7 is on the PC side. Apparently when I plug the N7 into the PC via USB, a file transfer window is supposed to appear on the PC. It does not.
That does not explain why, however I was completely unable to write (via usb, wireless, adb, or on the N7 itself) to the virtual sdcard when the N7 was on lollipop 5.01 but works with KitKat 4.4.4. Any clues? Anyone?

Amazing. All the people who read this forum and not a one has a clue as to why I cannot write to my N7.

lamoid said:
Amazing. All the people who read this forum and not a one has a clue as to why I cannot write to my N7.
Click to expand...
Click to collapse
Yeah that's gonna make people want to help you.
Since you seem wholely incapable of searching for yourself, here you go- http://forum.xda-developers.com/showthread.php?p=56720490

Maybe you did not want to, but you did help me _MetalHead_. Thank you.

lamoid said:
Maybe you did not want to, but you did help me _MetalHead_. Thank you.
Click to expand...
Click to collapse
You're welcome. And I did want to help, but that comment that you posted was rather rude. Next time, instead of acting entitled, a simple "can anyone please help?" would have sufficed.
Anyways... I take it you got it fixed?

I agree that was rude. And I apologize for it. However, on 18 January, I asked after not getting any responses, "Any clues? Anyone?" I checked for a response every day after that and by the 30th was rather frustrated at not having received one. Also I had searched the board extensively and could not find anything like my problem. Clearly I did not use the correct keywords or I would have found the page you pointed me to.
I don't know if that will solve the problem because I need to try to install the upgrade again then try it. Which I will soon.
Nevertheless I do greatly appreciate you for having helped me _MetalHead_ despite the rudeness of my request.

lamoid said:
I agree that was rude. And I apologize for it. However, on 18 January, I asked after not getting any responses, "Any clues? Anyone?" I checked for a response every day after that and by the 30th was rather frustrated at not having received one. Also I had searched the board extensively and could not find anything like my problem. Clearly I did not use the correct keywords or I would have found the page you pointed me to.
I don't know if that will solve the problem because I need to try to install the upgrade again then try it. Which I will soon.
Nevertheless I do greatly appreciate you for having helped me _MetalHead_ despite the rudeness of my request.
Click to expand...
Click to collapse
No worries man, I understand how frustrating it can be, especially when the life of your cherished Nexus 7 hangs in the balance. Keep me posted if you get it worked out or not.

Nextbook Flexx 11 how to dual boot android and 8.1/10

ok! where to even start...
I like many got this 2in1 at wal-mart and I live it. unfortunately I like many am not yet familiar with the new UEFI bootloader bios SOC stuff
heres what I do know and please correct me if im wrong. also please tell me if this 2 in 1 is and can be flashed the same as the asus t100
ok the Flexx11 has a bayntrail-t CR quad core processor 1.33-1.83ghz model Z3735F the t100 is3740
11.6" screen ips touchscreen at 1366x768 res
Efun is the corp and yifang vers.NX1106.1.02.008\139
THE BIOS IS YFG0315009112
it is a 32bit EFI bootloader
the reason I mention all of this is I have tried several times to dualboot androoid and each time ruined the computer and had to return it and I simply no longer wish to return it and love it to much to get something else
the first try the time began to lag and was unfixable for some reason the second time i somehow lost the keys booting and formatted wrong or something and the tablet bricked it would remain black with keyboard lit and no button combo could get it back no boot at all.
I am currently using AMIDUOS to run android kitkat and I love it but from what I understand it isnt compatible with win10 and really still isnt the same as the full android being on the tablet although really really close and awesome
but honestly I have been doing this stuff for years and now with this new windows secure boot and system on a chip stuff im lost

ever get anywhere with this?

I'm curious as well.
It has to be possible. I say that because I recently owned a ChuWi dual-boot device with the same Baytrail processor and SOC.
I wonder if it wouldn't be possible to take a system dump from one of the chuwi dualboot devices and flash it to the nextbook.
Sent from my Ascend Mate 2 using XDA Free mobile app

I'm also interested in doing this. It appears that the Nextbook Ares has the same hardware (minus 1GB RAM) but has Android. I contacted Nextbook to see if I could get a copy of the Ares Android firmware but was denied. If someone with the Ares could upload a backup that would be helpful.

I was finally able to get this working using this method...
https://hitricks.com/guide-how-to-dual-boot-remix-os-with-windows-uefi-legacy
So far I was able to get it to boot from a partition on the main drive as a test. In the process of installing to a secondary partition on my sd card. We'll see how it goes.
I wasnt able to get the boot menu that he shows but after going through the steps I then had an Android OS boot option in the bios boot menu. Pretty awesome! Runs great. Tried running Dead Trigger 2 as a test with full graphics. Ran perfectly.

I just bought one of these yesterday, and it shipped with Windows 10 Home 32-bit. I'm trying to install the 64-bit version but it won't boot from USB. Turns out it doesn't support 64-bit OSes. Where can I find recovery images for this? I messed up and now I don't have audio or touchscreen drivers.

64 bit processor?
I just bought one of these yesterday, and it shipped with Windows 10 Home 32-bit. I'm trying to install the 64-bit version but it won't boot from USB. Turns out it doesn't support 64-bit OSes. Where can I find recovery images for this? I messed up and now I don't have audio or touchscreen drivers.
Click to expand...
Click to collapse
Alright, I'm slightly confused now. Looking at system specs for mine it says it has an x64 based processor. Doesn't that mean it should be able to handle 64-bit OS? Even though it comes with 32-bit? If possible I would like to put 64-bit on it as well, but I'd like to be sure that that's not going to break it.

GeneticJulia said:
Alright, I'm slightly confused now. Looking at system specs for mine it says it has an x64 based processor. Doesn't that mean it should be able to handle 64-bit OS? Even though it comes with 32-bit? If possible I would like to put 64-bit on it as well, but I'd like to be sure that that's not going to break it.
Click to expand...
Click to collapse
It just won't boot the USB. At all. Unless it's 32-bit.

rowdyrocket said:
I was finally able to get this working using this method...
https://hitricks.com/guide-how-to-dual-boot-remix-os-with-windows-uefi-legacy
So far I was able to get it to boot from a partition on the main drive as a test. In the process of installing to a secondary partition on my sd card. We'll see how it goes.
I wasnt able to get the boot menu that he shows but after going through the steps I then had an Android OS boot option in the bios boot menu. Pretty awesome! Runs great. Tried running Dead Trigger 2 as a test with full graphics. Ran perfectly.
Click to expand...
Click to collapse
I'm loving Remix OS on here with dual boot. Having some issues though and I really want this to work.
Main and I mean main issue is no sound at all, no rotation is next in line and Bluetooth isn't working. Everything else works great.
This is so awesome its like Android lollipop with windows desktop functionality. Now if I can get the bugs fixed I will be in android hog heaven.
GREAT FIND BRO!!!!! EXACTLY what I was looking for maybe even better than.
for those interested here is the XDA section for all things REMIX OS
http://forum.xda-developers.com/remix
By the way for those who may want to know I installed dual boot onto the hard drive it went with no issues.Here's some tips for flexx 11
1. I used a partition manager such as easy partition manager to partition the C: drive regardless of what the tutorial said. Couldn't use windows disk management. I deleted the recovery for an extra 5 gigs (make a backup if you do) I used about 19 gigs from the C: drive and made an E: NTFS.
2.Also do not use the remix files from that tutorial use the ones here from the main site http://www.jide.com/remixos-for-pc they are newer and the ones from the other post where incomplete. Also the newer ones on the site now include OTA updating which is totally awesome.
3. I'm hoping this will help someone..... After I was all finished I expected it to dual boot as any other dual boot restart and then i would see options for the OS's not the case here I got stuck on this I was using easy BCD and trying all sorts of stuff, once I looked at the tut a little closer I realized you don't need any of that. Once your all done do a restart and it will go back to windows as usual. Now go to settings, then recovery, then advanced startup and choose from devices I think its the second option on the left list. There you will find Android OS click that and it will take you to your dual boot options. Sounds a lot more complicated than it really is. But believe me once you know this your better off.
And that's all I've got please and I mean please post here with any fixes especially for sound and if you have questions I will try to help.
Thanks
PS: I AM GETTING OCASIONAL LOCK UPS, MEANING THE OS FREEZES AND I HAVE TO RESTART BY HOLDING POWER.

Im not sure if this is good news or not...
Using the methos outlined I was not able to get audio bluetooth autorotate and other things to work but after a bit of digging I found out that remix os has an image specifically for nextbook baaytrail (Our PC) here: http://www.jide.com/remixos/devices
click other upper left.....
I cannot find instructions to install this though and using the other install instructions from here fail because the only part of the file to replace is the system image.
I also attempted the other install methods and easy BCD does not work for this PC
So if anyone can help to install this file specifically for our computer as well as verify that it works and what works and how you installed would be great

OK this is really cool I have made headway sort of.
I have installed kit kat android-x86-4.4-r3.img using the Androidx86-Installv24-5800.exe installer and i have rotation, root and it works pretty good for the most part wifi works great so far no bluetooth, it freezes during shut down and the major issue as in most cases is the sound. Im not sure about the camera now that I think about but i will check and report back here.
I really want the sound working on this and I woud be bigtime happy this forum could be solved as far as im concerned
From what I understand there is a bug with baytrail and linux where the spp port is pointed automatically to the usb or something. but for the life of me after weeks of scouring the internet cannot find a laymens guide to a simple fix for this. I'm really not even sure there is one because I'm yet find a rock solid confirmation of a solution

Update: camera doesn't work either
So far the 4.4.3 port is the best. I just can't seem to find any help whatsoever so its looking like so close yet so far away. Its a pure shame that audio and a few other major bugs are the only things in the way of this being a fully working and easy dual boot method.

I have bought a nextbook flexx10 but am unable to install remix OS. I have followed all the steps highlighted before.
1. partitioned the drive with gparted to make a 10G NTFS drive
2. downloaded android x86 5.1.1 iso and remix iso from jide website.
3. used android installer and android 5.1.1 iso to install the image
4. used 7zip to uncompress the remix iso
5. then copied over the 4 necessary files from remix to the drive to the android drive
6. copied over grub.cfg
Now, I do see the entry for androidOS but when I select that, I just get a message at the center of my screen that says "AndroidOS boot failed" and a blue OK button in DOS like font. thats it.. I am interested in knowing if any additional BIOS settings needs to be tweaked.
furthermore, I have tried installing android x86 6.0 by formating the same partition as ext4. All proceeded well and i got to the last screen that said "Run android-x86 now" or reboot. I removed the USB and was able to get into android. (some missing functionality). But when i reboot into windows and try to boot into androis, I get the same message of Andoid boot failed..
Thus I need to know if there's some BIOS settings related to permissions or sorts that i'm missing.
thanks

murlig123 said:
I have bought a nextbook flexx10 but am unable to install remix OS. I have followed all the steps highlighted before.
1. partitioned the drive with gparted to make a 10G NTFS drive
2. downloaded android x86 5.1.1 iso and remix iso from jide website.
3. used android installer and android 5.1.1 iso to install the image
4. used 7zip to uncompress the remix iso
5. then copied over the 4 necessary files from remix to the drive to the android drive
6. copied over grub.cfg
Now, I do see the entry for androidOS but when I select that, I just get a message at the center of my screen that says "AndroidOS boot failed" and a blue OK button in DOS like font. thats it.. I am interested in knowing if any additional BIOS settings needs to be tweaked.
furthermore, I have tried installing android x86 6.0 by formating the same partition as ext4. All proceeded well and i got to the last screen that said "Run android-x86 now" or reboot. I removed the USB and was able to get into android. (some missing functionality). But when i reboot into windows and try to boot into androis, I get the same message of Andoid boot failed..
Thus I need to know if there's some BIOS settings related to permissions or sorts that i'm missing.
thanks
Click to expand...
Click to collapse
Sorry for the late reply, use the installer and create a separate drive using C: like a D: or E: and get android 4.4 the .IMG that should work for you and the installer should do everything for you.
So use the uefi android installer after you partition a drive to load android 4.4 the uefi IMG
Its just going to piss you off though because there's no audio and seemingly no way to fix it, which is a crying shame ��
P.S. typically secure boot is off in the bios on this machine, but if by any chance you turned it on or the newer ones come that way make sure it is off or this will not work.

UEFI Settings
So I can get to a menu with 6 icons (2 rows and 3 columns) by running the "shutdown.exe /r /o" command and then going to Troubleshoot>Advanced Options>UEFI Firmware Settings and clicking restart. The problem is that when I get to this menu the touchscreen and keyboard do not work, and I can only move the highlighter up and down, not left and right. Hopefully one you guys have figured this out. I contacted the Nextbook support desk and they were no help at all.

korycooper said:
So I can get to a menu with 6 icons (2 rows and 3 columns) by running the "shutdown.exe /r /o" command and then going to Troubleshoot>Advanced Options>UEFI Firmware Settings and clicking restart. The problem is that when I get to this menu the touchscreen and keyboard do not work, and I can only move the highlighter up and down, not left and right. Hopefully one you guys have figured this out. I contacted the Nextbook support desk and they were no help at all.
Click to expand...
Click to collapse
Okay. So I was able to test this one of my co workers Nextbook and it seems like its a problem with mine.

This might be beneficial for us Flexx 11 users. It's a full port of Remix 2.0 to the Ares 8 with everything working except the camera rotation issue. Very promising. I've heard the hardware is similar. Working on attempting to install on mine. Anyone else tried it?
http://forum.xda-developers.com/remix/supported-devices/port-remix-os-2-0-nextbook-ares-8-t3498015

Hey guys,
NextBook Flexx 11, 64Gb, NXW116QC264, Windows 10
I'm really interested in trying to install Remix OS in Dual boot. However, in my trials, I goofed up my tablet. I found an image, but it turned out to be a Windows 8.1 image, and it wiped everything from my tablet. I had originally had Windows 10 on it.
Could someone perhaps be able to send me the recovery partition of their Nextbook; as long as they had Win10 installed. Maybe if I dump a Win10 recovery partition, I can do a repair on it and restore Win10 to the system.
I can't find the stock/factory rom for the Win10 version of the Flexx.
Thanks in advance,
Kori

KorishanTalshin said:
Hey guys,
NextBook Flexx 11, 64Gb, NXW116QC264, Windows 10
I'm really interested in trying to install Remix OS in Dual boot. However, in my trials, I goofed up my tablet. I found an image, but it turned out to be a Windows 8.1 image, and it wiped everything from my tablet. I had originally had Windows 10 on it.
Could someone perhaps be able to send me the recovery partition of their Nextbook; as long as they had Win10 installed. Maybe if I dump a Win10 recovery partition, I can do a repair on it and restore Win10 to the system.
I can't find the stock/factory rom for the Win10 version of the Flexx.
Thanks in advance,
Kori
Click to expand...
Click to collapse
Just to be clear...(and this goes for everyone wondering in the future) it was windows 10, from the factory??? Last i checked
they only shipped with windows 8.1 or android, depending on the model...If not and you put windows 10 on there, back when it was free, you just use the media creation tool from Microsoft to update windows 8.1 to Windows 10 (after restoring windows 8.1)... it can do this because most tablets have unchangeable hardware, so no cd key is required...it's like how your md5 hash verifies your downloaded files, Windows provides Microsoft with your hardwares md5 hash signature and if it is in the list, then it activates the pc/tablet... but, it only works if you got it free, not if you bought it... if you bought win10 then you will need your cd-key when you re-install, while the other steps are same as above... just note, that for the free upgrade there was NO cd-key, therefore in that instance, if it asked you for a key, you would leave it blank, which you can do in any case, and add your key in from Windows if needed...
And... as for the others having sound issues in Android, I read something about a reason for that having to do with something called an... 'audio stack', I think it was??? Not 100% sure what it meant, but basically, it is designed so the audio hardware only works in windows, I think... (so they can make more money, by making you buy the android tablet separately...)
hope this helps someone who stumbles upon this thread...

Wiebenor said:
Just to be clear...(and this goes for everyone wondering in the future) it was windows 10, from the factory??? Last i checked
they only shipped with windows 8.1 or android, depending on the model...If not and you put windows 10 on there, back when it was free, you just use the media creation tool from Microsoft to update windows 8.1 to Windows 10 (after restoring windows 8.1)... it can do this because most tablets have unchangeable hardware, so no cd key is required...it's like how your md5 hash verifies your downloaded files, Windows provides Microsoft with your hardwares md5 hash signature and if it is in the list, then it activates the pc/tablet... but, it only works if you got it free, not if you bought it... if you bought win10 then you will need your cd-key when you re-install, while the other steps are same as above... just note, that for the free upgrade there was NO cd-key, therefore in that instance, if it asked you for a key, you would leave it blank, which you can do in any case, and add your key in from Windows if needed...
And... as for the others having sound issues in Android, I read something about a reason for that having to do with something called an... 'audio stack', I think it was??? Not 100% sure what it meant, but basically, it is designed so the audio hardware only works in windows, I think... (so they can make more money, by making you buy the android tablet separately...)
hope this helps someone who stumbles upon this thread...
Click to expand...
Click to collapse
I realize this is a dead thread, but I had to chime in... I bought my NextBook Flexx 11 from Walmart 3 or 4 years ago and it shipped with Windows 10 Home, not Windows 8.1... However, IMHO, Windows 10 is a resource hog on this little device. I'm currently looking in to installing Linux...

[RECOVERY] TWRP 2.8.6.0 for Shield TV (all variants)

I was going to wait for this device to be added to devdb to make a release thread, but that's being delayed, if it'll ever happen. So, I'm making this thread as a placeholder. No big fancy text, just a known problem list and the release. If you're looking for this, you probably know what to do with it. Everything should work from flashing to backup and restore from all external media. If it doesn't, please report it.
KNOWN PROBLEMS:
1. This is a multirom edition of twrp, but there's no multirom support yet.
2. My wireless keyboard / mouse combo (an old Logitech MX something or another) fails to initialize the mouse on boot. I have to unplug and replug the USB receiver for the mouse to work. My wired mouse doesn't do this. I'm curious if anyone else sees a similar problem or if there's something weird with my hardware.
SOURCE:
device (branch cm-12.1-mrom)
kernel
vendor
CURRENT RELEASE:
For Android M:
twrp-20160222-UNOFFICIAL-foster.img
Known Issue: This release does not work on 4K displays. It boots to a black screen. Please use a 1080p display for TWRP until this is fixed.
For Android L:
twrp-multirom-20151112-UNOFFICIAL-foster.img
OLD RELEASES:
twrp-multirom-20150630-UNOFFICIAL-foster.img
twrp-multirom-20150624-UNOFFICIAL-foster.img
twrp-multirom-20150613-UNOFFICIAL-foster.img

MultiRom will be a must have on this device.
I really appreciate your work, and reading the various thread on xda I found out that you're one of the best developers for Nvidia Shield devices.
Without people like you we would all be locked in a large digital cage.
Compliments

Thanks Steel01!

I'm starting to slowly look at what I can disable in the kernel to shrink it down enough to fit in the recovery partition. Unfortunately, my first two ideas, network and sound, can't be unilaterally removed due to the android USB gadget (used for adb) depending on them. I've got it down to 26 MB, but iI dont know if it still boots. I'll try a few more things and hopefully have something working in the next couple days. I'm also hoping Tasssadar merges the 2.8.7.0 changes soon, the resize functionality will be useful (in testing I somehow shrunk my user data partition to 11 GB and had to reformat it get the full 4?? GB back).

Or it could be quicker than I thought. Todays test was successful. It's small enough to barely fit in the partition and appears to work correct. The link is in the OP. The next update to the multirom TWRP will probably make it too big again and I'll have to rip some more stuff out...

I want to install twrp recovery on my 16gb Shield, but i have no need for multirom. Is there an option to bypass the boot option or should I wait for a standard TWRP?
You didn't take much of a break before going back at it again. Thanks for your dedication!

Well, I'm not going back at it fully yet. Next week and a half will likely be pretty busy. I'm just doing a piece here and there.
This TWRP has multirom support, but does not require it or even set it up by default. In fact, to enable multirom, you have to install a separate zip (which I haven't released because it doesn't work). So no, you won't see any extra boot screens with this.
A standard TWRP build should be simple to make with the sources I've linked in the OP. I haven't released one here (or on any device I support) because I don't want to support it directly (basically, I'm supporting what I use myself). If no one else makes one, I might make a one time build for those that want it.

Hi Steel01, thanks for your efforts. I am a rookie at best at this, however, I managed to get this installed to my 16 gb shield tv, all appears to work fine, except I am unable to pair the shield remote, the shield game controller paired fine, but not the remote, just curious is this is expected, or maybe something wrong on my end. Also, If I wanted to load another rom at some point, is it as simple as booting to the twrp screen and selecting install? Hope that doesn't sound like a dumb question, I'm just a little unsure of that exact process. thanks

Remote controller fix
cdsn99 said:
Hi Steel01, thanks for your efforts. I am a rookie at best at this, however, I managed to get this installed to my 16 gb shield tv, all appears to work fine, except I am unable to pair the shield remote, the shield game controller paired fine, but not the remote, just curious is this is expected, or maybe something wrong on my end. Also, If I wanted to load another rom at some point, is it as simple as booting to the twrp screen and selecting install? Hope that doesn't sound like a dumb question, I'm just a little unsure of that exact process. thanks
Click to expand...
Click to collapse
Do not worry and follow these simple steps to fix your remote controller problem:
This is quite normal after a system reset or wipe.
If the remote did not connect:
If the microphone symbol is not flashing, hold down the back and home buttons at the same time until it flashes (3 seconds).
If the microphone symbol does not flash after holding for 3 seconds, charge the remote and try again.
To charge the remote, connect it to one of the USB ports on the back of your SHIELD with the included USB cable or connect it to another USB power source.
---------- Post added at 06:08 AM ---------- Previous post was at 06:01 AM ----------
cdsn99 said:
Hi Steel01, . Also, If I wanted to load another rom at some point, is it as simple as booting to the twrp screen and selecting install? Hope that doesn't sound like a dumb question, I'm just a little unsure of that exact process. thanks
Click to expand...
Click to collapse
Yes with TWRP it is very easy to flash a new rom, it is also recommended to use the recovery roms for updating your system.
Instead of running the OTO updates because this will undo your Root modification and reinstall the original recovery partition.
Download the correct firmware from this forum from the nvidia developers network, place it on a SD card boot to recovery and flash.
As a final suggestion have a look at the Flashify utllity (not compatible yet) or similar from the appstore, that a simple front end for flashing & backing up boot and recovery partitions. And it will enable you to boot to recovery in one click.
I have TWRP running on my Shield Portable / Shield Tablet without any problems.
Enjoy

Josti-Band said:
Do not worry and follow these simple steps to fix your remote controller problem:
This is quite normal after a system reset or wipe.
If the remote did not connect:
If the microphone symbol is not flashing, hold down the back and home buttons at the same time until it flashes (3 seconds).
If the microphone symbol does not flash after holding for 3 seconds, charge the remote and try again.
To charge the remote, connect it to one of the USB ports on the back of your SHIELD with the included USB cable or connect it to another USB power source.
---------- Post added at 06:08 AM ---------- Previous post was at 06:01 AM ----------
Yes with TWRP it is very easy to flash a new rom, it is also recommended to use the recovery roms for updating your system.
Instead of running the OTO updates because this will undo your Root modification and reinstall the original recovery partition.
Download the correct firmware from this forum from the nvidia developers network, place it on a SD card boot to recovery and flash.
As a final suggestion have a look at the Flashify utllity (not compatible yet) or similar from the appstore, that a simple front end for flashing & backing up boot and recovery partitions. And it will enable you to boot to recovery in one click.
I have TWRP running on my Shield Portable / Shield Tablet without any problems.
Enjoy
Click to expand...
Click to collapse
Thanks Josti-Band , that fixed my remote, I appreciate it greatly. Thanks also for the info on flashing, I'm still have one more question, when I flashed the img file from this thread TWRP, did I change the rom or just the recovery? It seems like the rom is the original that was on the shield tv, If rom was not changed do you or anyone else have a recommendation. Thanks again for the assistance.

cdsn99 said:
Thanks Josti-Band , that fixed my remote, I appreciate it greatly. Thanks also for the info on flashing, I'm still have one more question, when I flashed the img file from this thread TWRP, did I change the rom or just the recovery? It seems like the rom is the original that was on the shield tv, If rom was not changed do you or anyone else have a recommendation. Thanks again for the assistance.
Click to expand...
Click to collapse
No Problem, Your Shield TV has basically 3 partitions (to keep it simple)
1) Boot
2) Recovery
3) OS/Data (Rom)
With the steps you have followed
a) you unlocked your 1) bootloader, to enable the installation of unsigned packages to make this possible your personal data was erased/wiped from the 3) OS/Data partition.
b) Then you applied a new TWRP image to the recovery partition an replacing the old one.
So your 3) OS/Data (Rom) is still the original one you only wiped the personal data clean when unlocking the bootloader, this also the partition you will write your updated recovery images to. And stay updated.

I have TWRP running on my Shield Portable / Shield Tablet without any problems.
Enjoy[/QUOTE]
Josti-Band said:
No Problem, Your Shield TV has basically 3 partitions (to keep it simple)
1) Boot
2) Recovery
3) OS/Data (Rom)
With the steps you have followed
a) you unlocked your 1) bootloader, to enable the installation of unsigned packages to make this possible your personal data was erased/wiped from the 3) OS/Data partition.
b) Then you applied a new TWRP image to the recovery partition an replacing the old one.
So your 3) OS/Data (Rom) is still the original one you only wiped the personal data clean when unlocking the bootloader, this also the partition you will write your updated recovery images to. And stay updated.
Click to expand...
Click to collapse
Thank you, that makes better sense, I will try and load a rom and gapps and see how it goes. thanks again for the assistance

Steel01 said:
2. My wireless keyboard / mouse combo (an old Logitech MX something or another) fails to initialize the mouse on boot. I have to unplug and replug the USB receiver for the mouse to work. My wired mouse doesn't do this. I'm curious if anyone else sees a similar problem or if there's something weird with my hardware.
Hi Steel01 , I have a logitech k400r wireless keyboard and mouse, it seemed to work ok, except was very laggy, had to wait for it a few seconds each time I went to move the mouse, and sometimes mouse would freeze.
Click to expand...
Click to collapse

I have edited and deleted the orginal text from this post,and moved it to it's own thread. I realized I was beginning to hijack steels thread, I couldn't find a way to just delete the whole post, sorry.

Tassadar merged TWRP 2.8.7.0 into his multirom twrp fork today. So I ran new builds for everything I support. Unfortunately, I have not been able to test this device (TV's been busy all night), so YMMV. The other builds came off fine, so I don't see why this one should have any problems the last build didn't. Of interest in this build is the partition resize feature. So if someone does something weird like I did and ends up with an 11 GB data partition on the pro, it'll be *much* easier and quicker to fix now. Build is in the OP.

Steel01 said:
Tassadar merged TWRP 2.8.7.0 into his multirom twrp fork today. So I ran new builds for everything I support. Unfortunately, I have not been able to test this device (TV's been busy all night), so YMMV. The other builds came off fine, so I don't see why this one should have any problems the last build didn't. Of interest in this build is the partition resize feature. So if someone does something weird like I did and ends up with an 11 GB data partition on the pro, it'll be *much* easier and quicker to fix now. Build is in the OP.
Click to expand...
Click to collapse
What about the kexec-hardboot patch ? Do you have already tried it ?
The others binary for multirom execution are the same for all arm64 devices like the nexus 9 or we need a specific build for shield ? I never played with multirom stuff. There are specific problems to solve ? In case i can help you with experiments if you don't have much time.
P.S.
I tried your patch for the framework and all others new Nvidia binary + resigned private apk like blakepairing and others. But this year Nvidia added many others things to the framework. You can see by yourself with dex2jar.
It's a shame that for a stupid controller there are all this bloatware inside the firmware. Very bad behaviour, that a so big company not publish drivers for an hardware that we have bought. Fortunately we can use also better wireless controllers. But this fact really remove 10000 points from Nvidia as good company.

I've worked very little on the multirom side of things. The kernel repo has a mrom branch with a kexec patch, which still boots to stock. However, there's something getting triggered in the multirom init program that is skipping the boot screen. I haven't tried to track that down yet.
The controller part is off-topic, but there isn't really anywhere else to discuss it yet. Maybe I'll open a CM thread for discussion and put not working in bold at the top. Anyways, the framework patches work with the blakepairing shipped with the Shield TV, that's what I ship with my portable and tablet builds. But you have to deodex and stuff the class file back in the apk. Or easier, use the one in my vendor repo and just resign it. That should at least run. On a side note, the underlying technologies are all open source. WiFi Direct, wps, hid, etc. It just a standard USB hid controller with a WiFi chip and USB sound card. It's driven by an xmega (iirc) as well, those are all pretty open. It's obfuscation atm that stops me from completely reimplementing the pairing open source.

Steel01 said:
I've worked very little on the multirom side of things. The kernel repo has a mrom branch with a kexec patch, which still boots to stock. However, there's something getting triggered in the multirom init program that is skipping the boot screen. I haven't tried to track that down yet.
The controller part is off-topic, but there isn't really anywhere else to discuss it yet. Maybe I'll open a CM thread for discussion and put not working in bold at the top. Anyways, the framework patches work with the blakepairing shipped with the Shield TV, that's what I ship with my portable and tablet builds. But you have to deodex and stuff the class file back in the apk. Or easier, use the one in my vendor repo and just resign it. That should at least run. On a side note, the underlying technologies are all open source. WiFi Direct, wps, hid, etc. It just a standard USB hid controller with a WiFi chip and USB sound card. It's driven by an xmega (iirc) as well, those are all pretty open. It's obfuscation atm that stops me from completely reimplementing the pairing open source.
Click to expand...
Click to collapse
Already tried all. deodexed and resigned stock stuff, also used your framework patch and your (resigned) apks . not work in shield console. as i write above in shield console there are others proprietary things in the framework. Tested also with your wpa_supplicant and hostapd but the result does not change.
In any way i will retry
We can discuss in a separate thread. sorry for off-topic. can be useful also for others developers

This is very interesting, please continue with this work! Would be great to get the remote working on other ROMs.
Thanks!
Steel01 said:
I've worked very little on the multirom side of things. The kernel repo has a mrom branch with a kexec patch, which still boots to stock. However, there's something getting triggered in the multirom init program that is skipping the boot screen. I haven't tried to track that down yet.
The controller part is off-topic, but there isn't really anywhere else to discuss it yet. Maybe I'll open a CM thread for discussion and put not working in bold at the top. Anyways, the framework patches work with the blakepairing shipped with the Shield TV, that's what I ship with my portable and tablet builds. But you have to deodex and stuff the class file back in the apk. Or easier, use the one in my vendor repo and just resign it. That should at least run. On a side note, the underlying technologies are all open source. WiFi Direct, wps, hid, etc. It just a standard USB hid controller with a WiFi chip and USB sound card. It's driven by an xmega (iirc) as well, those are all pretty open. It's obfuscation atm that stops me from completely reimplementing the pairing open source.
Click to expand...
Click to collapse

Steel01 said:
I
KNOWN PROBLEMS:
1. This is a multirom edition of twrp, but there's no multirom support yet.
2. My wireless keyboard / mouse combo (an old Logitech MX something or another) fails to initialize the mouse on boot. I have to unplug and replug the USB receiver for the mouse to work. My wired mouse doesn't do this. I'm curious if anyone else sees a similar problem or if there's something weird with my hardware.
Click to expand...
Click to collapse
I have a logitech K830 keyboard with trackpad and have exactly the same issue as you. I have to unplug and replug the usb receiver before it will work with the recovery.
The recovery itself is working great for me. I can access my external usb hd from the file manager, and I did a TWRP backup to the external usb drive last night :good: Ive sideloaded this app to boot straight into the recovery from the TV.. https://play.google.com/store/apps/details?id=gt.reboot.utility

CM12.1 / Tab Pro 8.4 / SM-T320 - USB OTG Hub not working under CM as under stock ROM

SM T320​
Dear Ladies and Gentlemen,
after bricking my SGS2 with CM11 in course of loading a new pit-file I put my hands on my girlfriend's Galaxy Tab Pro 8.4 to get the latest stable CM12.1. However, after loading CM12.1 I cannot use USB-OTG properly anymore.
Unfortunately (or luckily) I couldn't find any threads handling same or similar problems on google, xda and other related German forums.
Previously, under Stock ROM the Tab Pro was capable of powering a USB-OTG-Hub (we're using this one: leicke.eu/en/products/DS38599 but there are a whole lot usb otg hubs out there which look exactly the same but are of another brand) including two 32gb FAT32-USB-Sticks plus one SDHC-Card and also capable of read/write data from one USB-source to another. (My girlfriend is using the Tab Pro as a replacement of an image tank simply by taking said USB-OTG-Hub and a USB-Stick + camera's SD-Card in order to backup photos during travelling.)
Now, we face the following problem(s) under CM12.1:
USB-OTG-Hub can only be used as far as solely the integrated SD-Card-Reader is used
USB-Sticks (FAT32) are not recognised and can't be used
Even when using the additional power cable to provide direct power to the hub, it doesn't work
in the dropdown-notification bar I'm missing the "safely remove USB-Device" as under stock ROM
when using the "safely remove USB-device"-function under Settings/Storage it says, "USB device will be removed" but it is never actually removed. When physically disconnecting the USB-hub CM12.1 complains that usb-device had been removed and shall be replaced. Unmounting with Stock ROM works just fine.
Summarized we have the following problems:
- can't read USB sticks
- can't unmount USB devices properly
What I have done so far in order to narrow down the failure:
tried Total Commander plus Paragon's USB plugin
used latest CM12.1 official (cm-12.1-20151007-SNAPSHOT-YOG4PAO335-mondrianwifi)
used one of the latest CM12.1 nightlies still available (cm-12.1-20151123-NIGHTLY-mondrianwifi)
using latest TWRP (twrp-2.8.7.0-mondrianwifiue.img.tar)
using latest SuperSU (UPDATE-SuperSU-v2.46)
rolled back to Stock ROM and everything just works fine; Therefore I assume that's a configuration error or a CM12.1 error
What I will do next:
- try CM13 once the USB-OTG issues are finally resolved there
Is there anything else I can do to resolve this issue?
Is there a chance to get support for CM12.1 now that CM13 is out?
Would appreciate if anyone can help me out with some ideas or even professional know-how since I'm already pretty desperate having a working otg-platform and at the same time a real android phone.
Thanks a lot in advance.
Best regards,
cipp80

USB Mounting Issue - Work Around

Challenge / Background:
I recently rooted my Sprint HTC 10 to Viper v10 3.5.0 with SuperUser v2.74-2. This was my second root and I had a couple hiccups along the way that required me to re-flash during the process to make sure I did it right....ended up being something different. Everything works though as expected with the exception that I noticed tonight that my Windows 7 laptop does not recognize my phone. After multiple tries trying to update drivers on my laptop (can see it in device manager, but error) and that type of thing, I gave up and tried to work the problem from my phone. But, the only solution I could find online was regarding ensuring that the USB tethering option was on. Additionally, when booted to TWRP v3.0.2-6 I also was unable to mount my phone as a USB storage device.
Temporary work around:
I will still be looking for a permanent solution, and if anyone has ideas please let me know, but if others have this problem, an option that worked for me was utilizing "USB Tethering" in lieu of "(USB) File Transfers". In order to do this, I downloaded the below app from Google Play and followed the instructions. Its a little slow moving from folder to folder, but works as a temporary solution for the moment, or until I try to reflash again in case I mistakenly selected the wrong option in Viper.
I utilized the MTP-Alternative USB Drive application by ClearEvo located in the store for free.
Hope this helps.