A2017U - SDCard won't mount in recovery? - ZTE Axon 7 Questions & Answers

Hey,
I am trying to go through the steps to unlock the bootloader (A2017U, B20 was the stock) and then later load up TWRP, but I am getting an issue with "can't mount /sdcard" in MiRecovery (or whatever its called, the stock) when trying to install the B20Fastboot.
The SDCard (128GB, Samsung) itself is mounted such that the phone can see it in stock operation and I can use it and move files around, but in MiRecovery it won't load so I can't install from the SDCard. So it appears to be behaving correctly *in* the phone but not in recovery mode. I've tried reformatting but it still won't get past the recovery error with mounting.
Is the card borked? Or is this phone defective in some very specific way that recovery can't mount sdcards? Or did I just mess something up/forget to do something?
Thanks!

Works fine with twrp, not sure about stock.

lafester said:
Works fine with twrp, not sure about stock.
Click to expand...
Click to collapse
I'm trying to get through unlocking the bootloader to install TWRP (so you're one step ahead of me), so its the stock that's having the issue.

I think the problem is with the SD card format. a 128Gb SDXC card is usually exFAT. Recovery will only read card formatted to FAT32!

Related

Tired to update, stuck in reboot loop.

Unsure of what happened. I attempted (Using ROM Manager) to try a different ROM (Virt), rebooted, and I am now stuck in a constant reboot loop at the "HTC" logo. I am still able to get into recovery, but somehow my backups are gone, SD card shows almost 4gigs open. I did backup my SD card (with recovery) on my PC. S-off, hboot: .79, radio at 2.15.00.07.28.
I've attempted factory reset, clearing cache / davlik, but I am still unable to clear this.
Any help greatly appreciated.
If you can get into recovery then flash a new ROM from within there.
The problem is getting it on the SD card.. I don't have a SD card reader. Is that what is needed? I have Skyraider 3.3.3 on my desktop, that would probably be the easiest way. Is there any way to transfer it to the phone without one while in recovery?
Update: was able to get SD recognized by PC, copied Skyraider_333 over to SD. Installing via recovery as we speak. (Fingers crossed)
HyperTension said:
The problem is getting it on the SD card.. I don't have a SD card reader. Is that what is needed? I have Skyraider 3.3.3 on my desktop, that would probably be the easiest way. Is there any way to transfer it to the phone without one while in recovery?
Click to expand...
Click to collapse
Of course just go to mounts and storage in clockwork mod recovery, you can mount your USB storage from there and then put ROMs onto the card.
Working... Installed OTA without difficulties. Only issue is that it took twice to install, but so far so good.
Once again, thank you!

Can't boot into recovery AT all

I installed Kang's CM9 using this tutorial:
http://www.informationweek.com/byte/howto/231002060
Everything was working fine. I could boot into recovery after removing the SD card and even used recovery to format a SD card for storage. Even after that I could reboot into recovery with no problems.
Today when I see there's an update on CM9 I downloaded it and when I go to reboot into recovery it doesn't. It sends me into the boot screen that you would hold the "n" button down for a menu rather than sending me straight to CWR. When I choose recovery from that menu it asks me if I want to return to factory.
Confused, I reboot and try to go to CWR through CWM and it does the same thing. I try to flash recovery through CWM and it doesn't.
I'm confused. What happened to recovery? How can I get it back?
lunchboxofomni said:
I installed Kang's CM9 using this tutorial:
http://www.informationweek.com/byte/howto/231002060
Everything was working fine. I could boot into recovery after removing the SD card and even used recovery to format a SD card for storage. Even after that I could reboot into recovery with no problems.
Today when I see there's an update on CM9 I downloaded it and when I go to reboot into recovery it doesn't. It sends me into the boot screen that you would hold the "n" button down for a menu rather than sending me straight to CWR. When I choose recovery from that menu it asks me if I want to return to factory.
Confused, I reboot and try to go to CWR through CWM and it does the same thing. I try to flash recovery through CWM and it doesn't.
I'm confused. What happened to recovery? How can I get it back?
Click to expand...
Click to collapse
If you have followed exactly what describing in the link you provided there, no more no less, then I would strongly say that what you said in your thread makes absolutely no sense.
Here is the point.
You downloaded and created a flashable CwMR uSD and place those zip files in there. NOTE: the ClockworkMod Recovery is ON your uSD. With the card inserted, yes, it would boot into CwMR. That means with the card removed, there is NO CHANCE that it could boot into CwMR just simply because it isn't there. Again, with the card removed, and you were able to boot into CwMR, then you must have flashed it, CwMR, into eMMC somehow, which not what the instructions shown.
Conclusion:
If CwMR has NOT been flashed into eMMC and only resides on the external uSD card, without it inserted, your NC could never boot into CwMR.
To the letter. But I found and image of recovery, put it on the SD card. Went to Rom Manager and flashed it. All is well.

[Q] recovering from soft brick

i THINK i know what i did wrong:
i flashed firmware that i found from another site (not filefactory) with mobile odin. i had done a few backups, but did a fresh one anyway from cwm, and moved it to the "external" sd card. i unchecked everroot--i dunno why, i was going to root with the zip file... this may have been my mistake. but i also checked, "factory reset/wipe data/wipe cache etc" from within odin. THIS may have been my mistake... well, when it rebooted, mobile odin went to it, said everything went fine, then rebooted. now i'm stuck on the gTab start-up screen. it doesn't load the boot animation even. i can get into download mode, and i can get into recovery. tried flashing a rom and a kernel on top of whatever is on the device. that didn't work. mobile odin DID take away root. so i rerooted it thinking that cwm may require root to work.
the problem from within cwm is that it isn't seeing the "internal" sd card, or it thinks the external is the internal... that's how i was able to root again, by applying zip from sd card. it worked. so it IS still seeing internal storage.
this may have already been fixed had i not LOST the USB cable.... another one is on order and en route. i can see no solutions with it as is, i'm going to need mobile odin to reflash...
i'm getting an error saying "can't mount emmc"
thanks for any help!!!
moderator, you can delete this post, sorry for the trouble, didn't mean to resubmit "new" thread.
thanks
-C

Need Major Help

I have been trying for a week now to restore a nook color back to stock with no avail. When I started there was no boot image or stock recovery and it would only boot from a CWR sd card but not mount or read the sd card to install any zip files Now i have it booting with the stock boot image but only to the "n" screen and no further. I have tried the factory recovery and reset but get nothing. I have a PC with a working ADB install but am unable to "push" the system.img to the sd card or anywhere for that matter and then dd it to the correct block on the internal memory. I am also unable to boot CM7 from the sd card because it freezes during the install. So basically what I'm asking for, is help fixing this darn thing cause I'm tired of it kicking my ass. thank you in advance for the info.
Sounds like your emmc partitions are messed up. Go to my partition repair thread linked in my signature. But if you cannot flash any zips, my repairs will not work. Try using my CWM bootable card from my tips thread also linked in my signature. Put the repair zips on the boot card before you boot.
Sent from my Nook Color running ParanoidAndroid and Tapatalk
leapinlar said:
Sounds like your emmc partitions are messed up. Go to my partition repair thread linked in my signature. But if you cannot flash any zips, my repairs will not work. Try using my CWM bootable card from my tips thread also linked in my signature. Put the repair zips on the boot card before you boot.
Sent from my Nook Color running ParanoidAndroid and Tapatalk
Click to expand...
Click to collapse
I will try both when i get home from work and let you know how it works. Thanks.
steve_o2291 said:
I will try both when i get home from work and let you know how it works. Thanks.
Click to expand...
Click to collapse
ok so after reading your links i have tried both of those methods already and neither of them works. I am beginning to wonder if i don't just have a group of six bad sd cards. They will boot CWR and begin the install of CM7 but thats as far as they get. I have tried everything I can find on forums and nothing works so far. If i could just get the system.img pushed with adb then i think that would get it but it just won't work.
I have also read about the system not loading if the serial number is not on it but I have done some file searching and found that it is in place so i don't think thats the prob. If you could think of anything different that would be awesome but I think I'm about to the point of having to bring it to B&N for service or just replace it.
Is there a place i could put the system image for the factory reset to take care of the install on its own.
steve_o2291 said:
Is there a place i could put the system image for the factory reset to take care of the install on its own.
Click to expand...
Click to collapse
Go to my tips thread and I have a new section about 8 failed boots. But you need the stock recovery on /boot for it to work. I know you cannot flash my stock recovery zip, but you could open the zip and extract the uRecImg and uRecRam and push them with adb to /boot (mount /dev/block/mmcblk0p1 as /boot first). Then follow my guide on how to do the 8 failed boots. That should wipe your device (including media) and install the original stock on your system.
leapinlar said:
Go to my tips thread and I have a new section about 8 failed boots. But you need the stock recovery on /boot for it to work. I know you cannot flash my stock recovery zip, but you could open the zip and extract the uRecImg and uRecRam and push them with adb to /boot (mount /dev/block/mmcblk0p1 as /boot first). Then follow my guide on how to do the 8 failed boots. That should wipe your device (including media) and install the original stock on your system.
Click to expand...
Click to collapse
Ive already got the stock recovery on /boot but 8 failed boots still does nothing because i have system.img for it to recover. I have all the partitions formatted the way they are supposed to be with fdisk but i still can't push the system.img to sdcard because it can't find it and if i try to put it on the nook i either get a protocol error or not enough room on the device error.
steve_o2291 said:
Ive already got the stock recovery on /boot but 8 failed boots still does nothing because i have system.img for it to recover.
Click to expand...
Click to collapse
I don't understand what you mean, you 'have system.img for it to recover'. The 8 failed boot uses factory.zip in partition 3 and if it enters the process (via stock recovery), it clears data and flashes that.
leapinlar said:
I don't understand what you mean, you 'have system.img for it to recover'. The 8 failed boot uses factory.zip in partition 3 and if it enters the process (via stock recovery), it clears data and flashes that.
Click to expand...
Click to collapse
I didn't realize i had to have facotry.zip on p3. I am going to try to dd it there and see what it does from there
Ok just tried like that and still get the install failed screen.
steve_o2291 said:
I didn't realize i had to have facotry.zip on p3. I am going to try to dd it there and see what it does from there
Ok just tried like that and still get the install failed screen.
Click to expand...
Click to collapse
Where did you get your factory.zip? Did you just rename a stock zip? It looks the same but I'm not sure everything is. When it says install failed, did the recovery start and fail or did it say that right off? Are you sure the recovery you used is the real stock recovery? You cannot just remove kernel-recovery and ramdisk-recovery from the stock zip and push those as uRecImg and uRecRam. Those get patched as the rom installs. Take the ones from my zip and push them. They are the patched versions.
You say you dd it but I hope you mean push to the mounted partition.
leapinlar said:
Where did you get your factory.zip? Did you just rename a stock zip? It looks the same but I'm not sure everything is. When it says install failed, did the recovery start and fail or did it say that right off? Are you sure the recovery you used is the real stock recovery? You cannot just remove kernel-recovery and ramdisk-recovery from the stock zip and push those as uRecImg and uRecRam. Those get patched as the rom installs. Take the ones from my zip and push them. They are the patched versions.
You say you dd it but I hope you mean push to the mounted partition.
Click to expand...
Click to collapse
I am unable to mount /dev/block/mmcblk0p1 in shell with a /boot directory. gives me a "Device or resource busy". so i just pushed the recovery files to /boot with
"adb push XXXX /boot"
and yes the recovery starts to load then fails
If i do
adb mount /boot
I get the help menu for a wrong entry
and i used the files from your download for the factory recovery
steve_o2291 said:
I am unable to mount /dev/block/mmcblk0p1 in shell with a /boot directory. gives me a "Device or resource busy". so i just pushed the recovery files to /boot with
"adb push XXXX /boot"
and yes the recovery starts to load then fails
If i do
adb mount /boot
I get the help menu for a wrong entry
Click to expand...
Click to collapse
Boot must already be mounted by CWM.
Just do an 'adb mount' command and it will tell you the things already mounted.
As for dd'ing the system.img to p5, can't you just dd it with adb from your PC?
And the factory.zip? You pushed that to p3?
leapinlar said:
Boot must already be mounted by CWM.
Just do an 'adb mount' command and it will tell you the things already mounted.
As for dd'ing the system.img to p5, can't you just dd it with adb from your PC?
And the factory.zip? You pushed that to p3?
Click to expand...
Click to collapse
yes i pushed factory.zip to p3
as for dd'ing system.img to p5 with adb i have to do dd with a shell command and i errors out when i try to push it data so i can't dd it to p5
this would be a lot easier if the damn sd card would work. I have no clue why it isn't because it worked fine until it crashed
Try formatting the SD with an SD formatting program (in a USB card reader, not your PC's internal slot). Sometimes SDs formatted with PCs are not readable in the nook. Search the net for one.
leapinlar said:
Try formatting the SD with an SD formatting program (in a USB card reader, not your PC's internal slot). Sometimes SDs formatted with PCs are not readable in the nook. Search the net for one.
Click to expand...
Click to collapse
Already did that several times with multiple cards on different machines. One with windows the other a mac
One final suggestion. Use my CWM SD (version 5.5.0.4) since it has the option of flashing things from internal memory.
Do an 'adb mount' to verify that p8 is mounted. If it isn't, mount it. Then push the zips that you want to flash there. Then the new CWM can flash from there.
Tried that just now and 5.5.0.4 tells me no zip found. I guess this is something that'll have to be done by a professional. After a week of trying and trying again I don't think Im going to be able to do it because I've tried everything i can find on the net and nothing works except for get the factory boot image back in place and getting the factory recovery to start but won't install anything. The factory reset also starts and erases all data but won't still only boots to the "n" screen. thanks for the help

factory reset and verify account issue

my brother used my axon 7 temporarily and added his account.
but after he returning it to me he factory reset it.
now that I am trying to set it up again, it keeps asking to verify the last account logged in.
so we logged in with his account and it won't work
is there anyway we can bypass this, or maybe downgrade to factory image? I downloaded the stock 2017U firmware and put in an SD card, however using stock recovery I cannot upgrade/downgrade firmware.
please advise
whoohaaah said:
my brother used my axon 7 temporarily and added his account.
but after he returning it to me he factory reset it.
now that I am trying to set it up again, it keeps asking to verify the last account logged in.
so we logged in with his account and it won't work
is there anyway we can bypass this, or maybe downgrade to factory image? I downloaded the stock 2017U firmware and put in an SD card, however using stock recovery I cannot upgrade/downgrade firmware.
please advise
Click to expand...
Click to collapse
Try a FAT32 formatted sd card - 32gb or less is natively that.
The file goes onto the sd card and is renamed "update.zip".
Go to recovery, wipe data and flash update from sd card. This should fix it...
Just as a reminder, EVERYTHING you want to keep, BACKUP first...
whoohaaah said:
my brother used my axon 7 temporarily and added his account.
but after he returning it to me he factory reset it.
now that I am trying to set it up again, it keeps asking to verify the last account logged in.
so we logged in with his account and it won't work
is there anyway we can bypass this, or maybe downgrade to factory image? I downloaded the stock 2017U firmware and put in an SD card, however using stock recovery I cannot upgrade/downgrade firmware.
please advise
Click to expand...
Click to collapse
My suggestion would be install TWRP, wipe EVERYTHING, then use the TWRP flashable zips for B29
ultramag69 said:
Try a FAT32 formatted sd card - 32gb or less is natively that.
The file goes onto the sd card and is renamed "update.zip".
Go to recovery, wipe data and flash update from sd card. This should fix it...
Just as a reminder, EVERYTHING you want to keep, BACKUP first...
Click to expand...
Click to collapse
Ok I am preparing the sd card again and trying this.
tabletalker7 said:
My suggestion would be install TWRP, wipe EVERYTHING, then use the TWRP flashable zips for B29
Click to expand...
Click to collapse
how do I install TWRP if I didnt turn on oem unlock and usb debugging? Don't I need to access developer options in order to install twrp? I can't get past the initial setup process
ultramag69 said:
Try a FAT32 formatted sd card - 32gb or less is natively that.
The file goes onto the sd card and is renamed "update.zip".
Go to recovery, wipe data and flash update from sd card. This should fix it...
Just as a reminder, EVERYTHING you want to keep, BACKUP first...
Click to expand...
Click to collapse
dang, I thought this would work.
i am getting Can't SDCARD Upgrade
tried on 2 different SD cards
any other ideas?
whoohaaah said:
Ok I am preparing the sd card again and trying this.
how do I install TWRP if I didnt turn on oem unlock and usb debugging? Don't I need to access developer options in order to install twrp? I can't get past the initial setup process
Click to expand...
Click to collapse
http://forum.xda-developers.com/axon-7/development/wip-axon-7-root-bootloader-unlokced-t3441204 use this and just install recovery - that is TWRP. Then boot straight to TWRP, wipe everything, http://forum.xda-developers.com/axon-7/development/rom-guide-updates-to-stock-files-via-t3469484 use this to install B29
tabletalker7 said:
http://forum.xda-developers.com/axon-7/development/wip-axon-7-root-bootloader-unlokced-t3441204 use this and just install recovery - that is TWRP. Then boot straight to TWRP, wipe everything, http://forum.xda-developers.com/axon-7/development/rom-guide-updates-to-stock-files-via-t3469484 use this to install B29
Click to expand...
Click to collapse
ok thanks.
quick clarification, do I have to go into bootloader mode or recovery mode in step 2 (press and hold volume UP + DOWN)?
whoohaaah said:
ok thanks.
quick clarification, do I have to go into bootloader mode or recovery mode in step 2 (press and hold volume UP + DOWN)?
Click to expand...
Click to collapse
shut off phone.
hold both volume buttons (with the phone still off) and plug in usb cable (while still holding both buttons).
Go to your device manager and see the com port used for Qualcomm

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