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[Q] New info (in OP bold txt), can you answer? - Power on/Reboot goes into APX mode

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wha2do
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(Last edited by wha2do; 19th February 2014 at 05:46 PM.) Reason: New info, hoping simpler question/answer
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Default [Q] New info (in OP bold txt), can you answer? - Power on/Reboot goes into APX mode

Sorry, other post is a bit hard to read, was trying to see if upgrading my TF300t (unlocked, rooted, nvflash run) to v9.4.3.30 would fix it - which unfortunately didn't.

I'm having issues resolving powering up and reboots automatically going into APX mode. Plus lost my icons (fastboot, wipe, ? ) when powering up w/vol down
button. Only have choice of Recovery or let it cold-boot into ICS. The original help post for added details is at:

Original post with more details


I'm thinking the AndroidRoot booloader I've been running from when I originally created my nvflash backups got corrupted. The update (via Install Zip in TWRP) does
not seem to have updated the bootloader. In reading even more posts, another user shows:

The Device is UnLocked
Android cardhu-user bootloader <2.10 e> released by "US_epad-9.4.3.30-20120604" A03
Checking for android ota recovery

I see the exact same except my version is "WW_epad-9.4.3.30-20120604", which makes me think the bootloader isn't getting updated correctly & is still the original AndroidRoot
version which became corrupted? I also double checked the new EBT blob I'm flashing via a hex editor and it shows it has a US SKU! So does that mean nvflash isn't truly
flashing it? If not, how can I get it to take either with nvflash, ADB, or TWRP?


Also can see (lack of) progress below *sigh*
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[GUIDE] Entering ADB/Fastboot/APX mode instructions (ASUS TF300t)


Samsung Galaxy Note 10.1 2014 edition (SM-P600 ZKVXAR), 32GB, v4.3 unrooted/locked
 
wha2do
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(Last edited by wha2do; 18th February 2014 at 02:04 PM.)
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Quote:
Originally Posted by wha2do View Post
Sorry, other post is a bit hard to read, was trying to see if upgrading to v9.4.3.30 would fix it - which unfortunately it didn't.

I'm having issues resolving powering up and reboots automatically going into APX mode. Plus lost my icons (fastboot, wipe, ? ) when powering up w/vol down
button. Only have choice of Recovery or let it cold-boot into ICS. The original help post is at:

Original post with more details

See (lack of) progress below.
Well, still need some suggestions/help. I've run:

nvflash -r --download 4 blob.EBT
nvflash -r --download 10 blob.APP
nvflash -r --download 6 blob.LNX
nvflash -r --download 5 twrp2.5.0.0.img

Didn't do anything to fix the APX issue nor get my fastboot icon back. I'm wondering if I should try using
the bricksafe.img file I'd created before - not sure what exactly it contains and if it would be any different.

At this point I'm days away from seeing if I can return the tablet (under a 2 year warranty plan - thought it
was said if they can't fix, get my money back rather than a replacement) and look at something else.

I've read and read and not found anything useful yet and not much on the nvflash backup file use for restoring...

Help!
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[GUIDE] Entering ADB/Fastboot/APX mode instructions (ASUS TF300t)


Samsung Galaxy Note 10.1 2014 edition (SM-P600 ZKVXAR), 32GB, v4.3 unrooted/locked
 
f69m
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You could try erasing the misc partition.
I think this this is the right command, but you might have to check the exact command syntax (don't have nvflash handy right now):
nvflash -r --format_partition 3

Sent from my TF300T using Tapatalk
 
wha2do
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(Last edited by wha2do; 18th February 2014 at 02:21 PM.) Reason: clarification
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Quote:
Originally Posted by f69m View Post
You could try erasing the misc partition.
I think this this is the right command, but you might have to check the exact command syntax (don't have nvflash handy right now):
nvflash -r --format_partition 3

Sent from my TF300T using Tapatalk
Thx & that's the correct syntax, but what is nvflash's partition 3 (misc)? And is this nvflash PartitionId 3 or adb's mount point /dev/block/mmcblk0p3? In
nvflash's partition table list, MSC (assuming this is the same "misc" partition) is listed as PartitionId 12...

When I do a list of partition tables from nvflash, it shows this as type Partition_table and named PT. I did install the Partition Table app
and see where 3 may be coming from, as in the mount point /mmcblk0p3, labelled as MSC?

Looking at other known nvflash/Partition table comparisons, one nvflashes blob.APP (system) to partition 10 yet the Partition Table app
shows /system, labelled as APP mounted on /mmcblk0p1. And with blob.SOS, nvflash sends it to 5 yet the adb command uses /mmcblk0p4...

I maybe interpreting these all wrong and it's ok - just being very cautious about formatting a partition and what effect it will have... Thanks in advance for clarification!
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[GUIDE] Entering ADB/Fastboot/APX mode instructions (ASUS TF300t)


Samsung Galaxy Note 10.1 2014 edition (SM-P600 ZKVXAR), 32GB, v4.3 unrooted/locked
 
f69m
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Quote:
Originally Posted by wha2do View Post
Thx & that's the correct syntax, but what is nvflash's partition 3 (misc)? And is this nvflash partition 3 or adb's mount point /dev/block/mmcblk0p3?

When I do a list of partition tables from nvflash, it shows this as type Partition_table and named PT. I did install the Partition Table app
and see where 3 may be coming from, as in the mount point /mmcblk0p3, labelled as MSC?

Looking at other known nvflash/Partition table comparisons, one nvflashes blob.APP (system) to partition 10 yet the Partition Table app
shows /system, labelled as APP mounted on /mmcblk0p1. And with blob.SOS, nvflash sends it to 5 yet the adb command uses /mmcblk0p4...

I maybe interpreting these all wrong and it's ok - just being very cautious about formatting a partition and what effect it will have... Thanks in advance for clarification!
Sorry, my bad, haven't really used nvflash much. Just assumed it would be the same numbers. :/
Yes, I mean the MSC or misc partition /dev/block/mmcblk0p3.
It holds commands for the bootloader, for eaxample "recovery", etc. Cleaning it might make your bootloader behave. Might.

Sent from my TF300T using Tapatalk
 
wha2do
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Quote:
Originally Posted by f69m View Post
Sorry, my bad, haven't really used nvflash much. Just assumed it would be the same numbers. :/
Yes, I mean the MSC or misc partition /dev/block/mmcblk0p3.
It holds commands for the bootloader, for eaxample "recovery", etc. Cleaning it might make your bootloader behave. Might.

Sent from my TF300T using Tapatalk
No problem at all, I appreciate the help and I just always try to be cautious! Just to be doubly sure, here's the excerpt from
getting the partition table info from nvflash earlier today:

PartitionId=12
Name=MSC
DeviceId=18
StartSector=317568
NumSectors=512
BytesPerSector=4096

So doing the nvflash -r --format_partition 12 command should be safe. Wondering, does it make sense to do this first:

nvflash --resume --rawdeviceread 317568 512 msc.img

Should back up what's there if need it afterwards...again being safe, lol!
...found the answer to a question you'd asked? Take a second to post the solution; it'll provide future help to others!


[GUIDE] Entering ADB/Fastboot/APX mode instructions (ASUS TF300t)


Samsung Galaxy Note 10.1 2014 edition (SM-P600 ZKVXAR), 32GB, v4.3 unrooted/locked
 
f69m
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Quote:
Originally Posted by wha2do View Post
No problem at all, I appreciate the help and I just always try to be cautious! Just to be doubly sure, here's the excerpt from
getting the partition table info from nvflash earlier today:

PartitionId=12
Name=MSC
DeviceId=18
StartSector=317568
NumSectors=512
BytesPerSector=4096

So doing the nvflash -r --format_partition 12 command should be safe. Wondering, does it make sense to do this first:

nvflash --resume --rawdeviceread 317568 512 msc.img

Should back up what's there if need it afterwards...again being safe, lol!
Yes, this looks like the right one. Unfortunately /proc/partitions does not give a start sector, but the name MSC matches. /proc/partitions gives the size at 2048, but that should be 1K blocks, so maching the 512 4K-blocks shown by nvflash.

Yeah, should be save to erase, but being careful and having a backup never hurts. Might even be interesting to have a glance at the contents.

Sent from my TF300T using Tapatalk
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