Database Users

[Q] A500 in ReadOnly mode and no Recovery ?? /Data is RO!

My tablet has somehow become “write protected”. I can install and remove apps but when I restart it revert to how the tablet looked 1 month ago.
Even if I do a “Factory data reset”. It just reboot into the old “image”. I am going slightly mad over this.
I no longer can enter Recovery. I get “ Secure Boot: image SOS checksum fail!”
I have tried to write a new recovery(dd if=/sdcard/recovery-thor2002ro-rev1.*.img of=/dev/block/mmcblk0p1) but still same issue.
Anyway, all I would like is to have a working recovery installed again. But how ??
Update: I have also tried to nvflash it but I get "Formatting partition 2 BCT please wait.. FAILED!"
Update2: /dev/block/mmcblk0p8 /data ext4 ro,nosuid,nodev,noatime,nodiratime,user_xattr,acl,barrier=1,data=ordered,noauto_da_alloc 0 0
Should that not be RW ??
I have an Acer 500 running 4.0.3/2.6.39.4+
Image: Acer_AV041_A500_RV03RC01_WW_GEN1 Build: Lightspeed_4.8

magiske said:
My tablet has somehow become “write protected”. I can install and remove apps but when I restart it revert to how the tablet looked 1 month ago.
Even if I do a “Factory data reset”. It just reboot into the old “image”. I am going slightly mad over this.
I no longer can enter Recovery. I get “ Secure Boot: image SOS checksum fail!”
I have tried to write a new recovery(dd if=/sdcard/recovery-thor2002ro-rev1.*.img of=/dev/block/mmcblk0p1) but still same issue.
Anyway, all I would like is to have a working recovery installed again. But how ??
Update: I have also tried to nvflash it but I get "Formatting partition 2 BCT please wait.. FAILED!"
Update2: /dev/block/mmcblk0p8 /data ext4 ro,nosuid,nodev,noatime,nodiratime,user_xattr,acl,barrier=1,data=ordered,noauto_da_alloc 0 0
Should that not be RW ??
I have an Acer 500 running 4.0.3/2.6.39.4+
Image: Acer_AV041_A500_RV03RC01_WW_GEN1 Build: Lightspeed_4.8
Click to expand...
Click to collapse
hello i have exactly the same issue
have you found a solution?
thks

U guys will need to rollback to hc and nvFlash from there....using timmydean v4! It will give u root and cwm.
Actually, I've just rolled back myself with it......it completely wipes yr tab and u will need yr cpuid
After u get the big white PASS, put yr tab in apex mode and nvflash the BL and recovery again
Sent from my A500 using Tapatalk 2

dibb_nz said:
U guys will need to rollback to hc and nvFlash from there....using timmydean v4! It will give u root and cwm.
Actually, I've just rolled back myself with it......it completely wipes yr tab and u will need yr cpuid
After u get the big white PASS, put yr tab in apex mode and nvflash the BL and recovery again
Sent from my A500 using Tapatalk 2
Click to expand...
Click to collapse
ok thanks to take a look on my problem!
So i have try your suggest! I have read the pdf include . Run DotNEtDetector, retrieve my serial. The tools detect my acer and display my actuel version (Flexreaper) but for new image version I have N/A in red and the next button is dimmed!
What can I do?
Thanks

Run it again
Sent from my GT-I9300 using Tapatalk 2
---------- Post added at 09:13 AM ---------- Previous post was at 09:07 AM ----------
Oops....run again but this time do not connect yr sub cable till the euu gives u the ok to do so....and the steps for manual apex mode....sorry I short on time at mo...see any of my las t posts for more info
Sent from my GT-I9300 using Tapatalk 2

SO I have try to run it.................so many time
With 3 differents PC.(XP ans 7)
I had wait until euu said me that it don't detect my ACER.
Start in APX mode manually
plug USB
ICONIA detected
enter my CPUID
click next
Iconia vibrate and display entering ACER download mode
and EEU display me "sorry update failed Please follow instruction......." (french translation)
SO what can i do?

gerardpuducul said:
SO I have try to run it.................so many time
With 3 differents PC.(XP ans 7)
I had wait until euu said me that it don't detect my ACER.
Start in APX mode manually
plug USB
ICONIA detected
enter my CPUID
click next
Iconia vibrate and display entering ACER download mode
and EEU display me "sorry update failed Please follow instruction......." (french translation)
SO what can i do?
Click to expand...
Click to collapse
Oh dear, this is not good, is your tab under warranty???
Sent from my GT-I9300 using Tapatalk 2
Have look at this thread
Posts 5, 8, and 9 if none of these solutions work, then
your tabs motherboard may be faulty, and will need
replacement....
http://forum.xda-developers.com/showthread.php?t=1846616

dibb_nz said:
Oh dear, this is not good, is your tab under warranty???
Sent from my GT-I9300 using Tapatalk 2
Have look at this thread
Posts 5, 8, and 9 if none of these solutions work, then
your tabs motherboard may be faulty, and will need
replacement....
http://forum.xda-developers.com/showthread.php?t=1846616
Click to expand...
Click to collapse
Oh no please don't said that!
I just want to remind that my ACER is FULLY working!
I can enter in bootloader , revovery without problem! I can launch my ROM and use it. I can install application without problem and use it. But when i reboot all modification are gone. Installed application are gone ,Can install new recovery or ROM.
This problem has arrived one day without doing nothing special ( no recovery/bootloader/ROM flash). Maybe an apk install or a battery low. But nothing that can be consider as "Dangerous"
Maybe a detail but have on ACER A501.
Thanks

Its my experience that when things "just happen one day" after doing nothing dangerous .... then it points to a hardware failure and this is especially so, if the EUU update says "update failed".....
which 501 rom are u currently using?
are you rooted?
have you tried reflashing the rom?
what happens when you use pwr and vol up buttons? -
if you have the v8 bootloader -can u access fastboot???

dibb_nz said:
Its my experience that when things "just happen one day" after doing nothing dangerous .... then it points to a hardware failure and this is especially so, if the EUU update says "update failed".....
Click to expand...
Click to collapse
OH NO !!!! PLEASE!!!:crying::crying::crying:
which 501 rom are u currently using? ICS FLEXREAPER
are you rooted? YES (include in ICS FLEXREAPER)
have you tried reflashing the rom? Yes. I push Power + vol up -> enter into TWRP recovery -> Wipe System/Data/cache/etc- > Try to flash Thor JB 15. Installation seems OK. Reboot and still in FLEXREAPER
what happens when you use pwr and vol up buttons? - I go into TWRP recovery
if you have the v8 bootloader -can u access fastboot??? Yes i can select fastboot but the tabs seems doing nothing. What is exactly fastboot?
Thanks again

fastboot is the easiest way of doing things.....u must connect yr tab to yr PC then open a command prompt from the fastboot folder....just like using adb.....if u aren't sure how to use it, then it may be best to use another method......
you can reflash the v8 bootloader again but please flash cwm 1.7.3 recovery....until we get u fixed....
But first backup yr stuff, to yr PC.
2nd be sure you have yr cpuid/sbk....Don't attempt to reflash anything till you've done this.....its very important....
trying to flash thors rom has screwed yr system.....it doesn't work well with the v8 bootloader.....so we need to Wipe and fully format yr tab....
from yr tab go.into settings>backup & restore and select "Factory Reset".
Then do it again....
next reflash the v8 bootloader and cwm 1.7.3....
Go into recovery, and format /data, /cache and /flexrom partitions.
then flash a V8 COMPATIBLE rom
go back into the wipe menu and do another full wipe.
reboot.....cross yr fingers and pray to the Acer gods!!!
Just a note....when flashing a rom....be sure to read the installation instructions very carefully....which bootloader u need and full wipes and formats are required for first time installs....the tiniest piece of leftover data can really corrupt things.....
Sent from my GT-I9300 using Tapatalk 2

fastboot is the easiest way of doing things.....u must connect yr tab to yr PC then open a command prompt from the fastboot folder....just like using adb.....if u aren't sure how to use it, then it may be best to use another method......
Click to expand...
Click to collapse
I had try a little bit with fastboot. When i launch fastboot from bootloader, my tabs is recognize by the PC to an ACER Fast boot device. But when I try to list device with command "fastboot devices", the PC detect nothing. I had a only "?" on the prompt
you can reflash the v8 bootloader again but please flash cwm 1.7.3 recovery....until we get u fixed....
Click to expand...
Click to collapse
I try that with a lot of different tools but no success
But first backup yr stuff, to yr PC.
2nd be sure you have yr cpuid/sbk....Don't attempt to reflash anything till you've done this.....its very important....
Click to expand...
Click to collapse
Don't worry i had save all my cpuid/sbk long ago
trying to flash thors rom has screwed yr system.....it doesn't work well with the v8 bootloader.....so we need to Wipe and fully format yr tab....
from yr tab go.into settings>backup & restore and select "Factory Reset".
Then do it again....
Click to expand...
Click to collapse
Trying to Factory Reset few time. Everytime the process seems finishing successfully , the tabs reboot, but i am still with all my settings
next reflash the v8 bootloader and cwm 1.7.3....
Click to expand...
Click to collapse
I try !! i promisse! AfterOTA, BlacktThund3r, Bad sector...........
take a look of this file which is a resume of my attempt :
https://docs.google.com/document/d/1d9ASpp1AFtdKTRA5zxfD2bQuHAwMA4CKGb18XhcXnWM/edit
Go into recovery, and format /data, /cache and /flexrom partitions.
Click to expand...
Click to collapse
Everything I do withmy TWRP recovery seems having no effect. the recovery said ok after each wipe but when i reboot i am still with my flexreaper.
then flash a V8 COMPATIBLE rom
go back into the wipe menu and do another full wipe.
reboot.....cross yr fingers and pray to the Acer gods!!!
Just a note....when flashing a rom....be sure to read the installation instructions very carefully....which bootloader u need and full wipes and formats are required for first time installs....the tiniest piece of leftover data can really corrupt things.....
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
I dream to do that

gerardpuducul said:
I had try a little bit with fastboot. When i launch fastboot from bootloader, my tabs is recognize by the PC to an ACER Fast boot device. But when I try to list device with command "fastboot devices", the PC detect nothing. I had a only "?" on the prompt
Click to expand...
Click to collapse
Try this first.....
Yes that's correct, seeing "?" is Good!
Now type in this
fastboot erase usersdata
fastboot erase cache
fastboot reboot
Trying to Factory Reset few time. Everytime the process seems finishing successfully , the tabs reboot, but i am still with all my settings
Click to expand...
Click to collapse
Everything I do withmy TWRP recovery seems having no effect. the recovery said ok after each wipe but when i reboot i am still with my flexreaper
Click to expand...
Click to collapse
Yes you will be....it won't affect your rom....it takes you back to how yr tab was when u first installed flexreaper..
It does not take u back to factory stock like itwas when u first bought yr tab....unfortunately....
The screenshots show the ebt error and partition errors which timmydeans v4 usually fixes
I'm sorry....I cannot suggest anything else....your issue is beyond my skill level!!!
But I will try and get someone else to help u.....

dibb_nz said:
Try this first.....
Yes that's correct, seeing "?" is Good!
Now type in this
fastboot erase usersdata
fastboot erase cache
fastboot reboot
Click to expand...
Click to collapse
fastboot erase userdata (and not fastboot erase usersdata I have seen your trap :cyclops
Code:
C:\ACER\adt-bundle-windows-x86_64\adt-bundle-windows\sdk\platform-tools>fastboot erase userdata
erasing 'userdata'...
OKAY [ 1.769s]
finished. total time: 1.770s
fastboot erase cache
Code:
C:\ACER\adt-bundle-windows-x86_64\adt-bundle-windows\sdk\platform-tools>fastboot erase cache
erasing 'cache'...
OKAY [ 0.996s]
finished. total time: 0.997s
fastboot reboot
reboot and still under flexreaper with all my settings !!!:crying:
I had also try
fastboot -w
Code:
C:\Users\nxp10261\Documents\ACER\adt-bundle-windows-x86_64\adt-bundle-windows\sdk\platform-tools>fastboot -w
erasing 'userdata'...
OKAY [ 1.781s]
formatting 'userdata' partition...
Erase successful, but not automatically formatting.
File system type α ☺ not supported.
OKAY [ 0.797s]
erasing 'cache'...
OKAY [ 0.991s]
formatting 'cache' partition...
Erase successful, but not automatically formatting.
File system type α ☺ not supported.
OKAY [ 0.796s]
finished. total time: 4.368s
why i have File system type α ☺ not supported???
I'm sorry....I cannot suggest anything else....your issue is beyond my skill level!!!
But I will try and get someone else to help u.....
Click to expand...
Click to collapse
Will I meet ACER A501 Master?:highfive:

Hey there,
Dibbs asked me to chime in here. So not sure what exactly I can do to help.
First thing, when dealing with Fastboot and Adb, it helps to have a good USB cable. Not one of those cheap things that came with a camera or printer.
I'm not saying go out and buy some expensive cable, what I say, is if you have somebody with an HTC cable, borrow it.
Also, if it applies, connect it to the mainboard, not one of the USB ports on the front of a desktop pc.
These are things I have noticed in the past year.
Next, here is a link to an app that sets your partitions back on the a501. No, I haven't used it yet. No need to. However, it has 2 batch files.
http://d-h.st/iQX
501a and 501b
Now, granted I have not used this, however, the partition tables and BCT seem sound. My guess, is that if rearranges your partitions to correct order, and perhaps installs V8 bootloader.
So you are welcome to try it. Can't hurt.
MD

And also, just to bring me up to date, are you on the V8 bootloader?
Before you do anything else.
MD

gerardpuducul said:
fastboot erase userdata (and not fastboot erase usersdata I have seen your trap :cyclops
Code:
C:\ACER\adt-bundle-windows-x86_64\adt-bundle-windows\sdk\platform-tools>fastboot erase userdata
erasing 'userdata'...
OKAY [ 1.769s]
finished. total time: 1.770s
fastboot erase cache
Code:
C:\ACER\adt-bundle-windows-x86_64\adt-bundle-windows\sdk\platform-tools>fastboot erase cache
erasing 'cache'...
OKAY [ 0.996s]
finished. total time: 0.997s
fastboot reboot
reboot and still under flexreaper with all my settings !!!:crying:
I had also try
fastboot -w
Code:
C:\Users\nxp10261\Documents\ACER\adt-bundle-windows-x86_64\adt-bundle-windows\sdk\platform-tools>fastboot -w
erasing 'userdata'...
OKAY [ 1.781s]
formatting 'userdata' partition...
Erase successful, but not automatically formatting.
File system type α ☺ not supported.
OKAY [ 0.797s]
erasing 'cache'...
OKAY [ 0.991s]
formatting 'cache' partition...
Erase successful, but not automatically formatting.
File system type α ☺ not supported.
OKAY [ 0.796s]
finished. total time: 4.368s
why i have File system type α ☺ not supported???
Will I meet ACER A501 Master?:highfive:
Click to expand...
Click to collapse
sorry for my spelling error...'trap'
YES YOU WILL ALWAYS be returned to flexreaper UNTIL you flash a new rom, its just the way it works!!!! BUT having all your settings still is not what should happen
I've asked the acer a501 master to take a look for you....please be patient...he will be along as soon as he possibly can, ok?

Moscow Desire said:
Hey there,
Dibbs asked me to chime in here. So not sure what exactly I can do to help.
First thing, when dealing with Fastboot and Adb, it helps to have a good USB cable. Not one of those cheap things that came with a camera or printer.
I'm not saying go out and buy some expensive cable, what I say, is if you have somebody with an HTC cable, borrow it.
Also, if it applies, connect it to the mainboard, not one of the USB ports on the front of a desktop pc.
These are things I have noticed in the past year.
Next, here is a link to an app that sets your partitions back on the a501. No, I haven't used it yet. No need to. However, it has 2 batch files.
http://d-h.st/iQX
501a and 501b
Now, granted I have not used this, however, the partition tables and BCT seem sound. My guess, is that if rearranges your partitions to correct order, and perhaps installs V8 bootloader.
So you are welcome to try it. Can't hurt.
MD
Click to expand...
Click to collapse
Hi Moscow desire and thanks to take a look on my problem.
First thing concerning the cable : I had try with ACER micro usb cable and with another micro usb using in my work(I flash Android device with it)
So a quick resume of my context:
I have a FULLY WORKING A501 with
bootloader Skrilax V8
twrp 2.1.3
FLEXREAPER-ReliX
fastboot is working
I can enter into bootloader
I can enter into recovery
I can launch my ROM FLEXREAPER-ReliX
but every modification that i try to apply to my tab has no effect after reboot
- reset factory : process seems ok but when i reboot i have still all my settings
- install new application : application working but after reboot application has disappear
- try to flash new ROM : enter into recovery/ select zip THOR ROM/Aruma installer process and said successful but when i reboot I am still under FLEXREAPER-ReliX
- try to reflash bootloader V8 : Failed with AfterOTA, thunderB3rd
- try to fix Partition table with Badsector : Failed
(all screenshot here https://docs.google.com/document/d/1d9ASpp1AFtdKTRA5zxfD2bQuHAwMA4CKGb18XhcXnWM/edit)
So now i try your Babsector :
the tabs said :
Code:
Entering Acer Download Mode
but process failed :
Code:
H:\ACER\BadSector\Image>"a501 A.bat"
****************************************************************
* Before executing, be sure to delete recovery-from-boot.p *
* from /system to ensure recovery will stick *
****************************************************************
****************************************
* Reboot your tablet into APX mode *
****************************************
Generate your SBK with your CPUID from here :
http://vache-android.com/v1/index.php?site=sbk
Enter your SBK:0xA78B1E00 0xBB9D0301 0xFBD7E703 0x00022103
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x038061874100a497
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0xb00d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714409/714409 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
creating partition: PT
creating partition: APP
creating partition: EBT
creating partition: GP1
creating partition: SOS
creating partition: LNX
creating partition: CAC
creating partition: MSC
creating partition: FLX
creating partition: AKB
creating partition: UDA
creating partition: GPT
Formatting partition 2 BCT please wait.. FAILED!
command failure: create failed (bad data)
bootloader status: partition table is required for this command (code: 8) messag
e: nverror:0x4 (0x4) flags: 0
Press any key to continue . . .

Yeah, sounds like corrupted data sectors on the BCT partition. Not sure if it's recoverable. Could be a physically bad sector in the emmc chip.
I don't mind pitching in, but, I have a busy schedule the next couple days, so won't be able to help you much till the weekend.
There's another app called "badsector". It's in one of the posts in either General, or Q&A. Never used it,m but operates on the same principal as babsector. If I'm not mistaken, might fix your issue.
Here is some info on your issue. This is pretty much the problem you have.
http://forum.xda-developers.com/showthread.php?t=1691729&page=3
You may want to send a PM to Yaworsky in that thread, He may be able to help you out a little more than I can.
MD

Moscow Desire said:
Yeah, sounds like corrupted data sectors on the BCT partition. Not sure if it's recoverable. Could be a physically bad sector in the emmc chip.
I don't mind pitching in, but, I have a busy schedule the next couple days, so won't be able to help you much till the weekend.
Click to expand...
Click to collapse
No problem!! I am with this issue since 1 month now so i can live with it few days more! :good:
There's another app called "badsector". It's in one of the posts in either General, or Q&A. Never used it,m but operates on the same principal as babsector. If I'm not mistaken, might fix your issue.
Click to expand...
Click to collapse
I had already try badsector and the result is the same!! ( see the summary of my try https://docs.google.com/document/d/1d9ASpp1AFtdKTRA5zxfD2bQuHAwMA4CKGb18XhcXnWM/)
Here is some info on your issue. This is pretty much the problem you have.
http://forum.xda-developers.com/showthread.php?t=1691729&page=3
Click to expand...
Click to collapse
I had try to find faulty sector but when i launch
Code:
nvflash --rawdevicewrite 0 1664 mmcblk0_start.img --bl bootloader.bin --sbk 0xA78B1E00 0xBB9D0301 0xFBD7E703 0x00022103 --go
I had
Code:
C:\ACER\root-3.2.1-V4\root-3.2.1\Image>nvflash --rawdev
icewrite 0 1664 mmcblk0_start.img --bl bootloader.bin --sbk 0xA78B1E00 0xBB9D030
1 0xFBD7E703 0x00022103 --go
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x038061874100a497
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
downloading bootloader -- load address: 0x108000 entry point: 0x108000
download command failed NvError 0x120002
command failure: bootloader download failed (bad data)
bootloader status: Bct file not found (code: 21) message: flags: 1073840124
You may want to send a PM to Yaworsky in that thread, He may be able to help you out a little more than I can.
MD
Click to expand...
Click to collapse
I had sent him a message
PS ; Just one more thing ;
I had try to use fastboot
so I had launch
Code:
>fastboot boot recovery_thor1.7.3.img
and successfully reboot into CMW recovery but the problem is still there!!:crying::crying::crying:
Every modification that I with CMW (format/reset/install recovery/ROM) said ok at the end of process but dissappear when i reboot!!!:crying::crying::crying:

nand erase all

Hi i have just one question if i check in odin "nand erase al"" will not brick my phone ? i want check it and flash new rom ?? thanks for info.

Hi,
Nand Erase All should be used with caution. If you accidentally flash anything and Nand Erase All is ticked, it could brick your device.
Sent from my GT-I9500 using XDA One

a300fu will only boot into twrp

I have totally messed up my phone trying to flsah twrp its a samsung a300 fu
and now will only boot into twrp nothing else ive tried flashing a new rom from there but with no joy.
Im attempting to put a stock rom back on the phone im using A300FXCU1BOK3_A300FOJV1BOI1_A300FXXU1BOK3_HOME.tar.md5 which as im on linux im trying to flash using heimdall
so i have the following files / partitions
File Partition
aboot.mbn ABOOT
boot.img BOOT
cache.img.ext4 CACHE
hidden.img.ext4 HIDDEN
hyp.mbn
modem.bin MODEM
NON-HLOS.bin APNHLOS
recovery.img RECOVERY
rpm.mbn RPM
sbl1.mbn SBL1
sec.dat sec
system.img.ext4 SYSTEM
tz.mbn
Click to expand...
Click to collapse
So i am left with two files tz.mbn and hyp.mbn wihch i have no idea where to put in Heimdall can any oe gibe me a heads up as to where
therse two should go and if im even on the right track.
Cheers Dunryc

sure every one knew the answer but putting it here just oin case
aboot.mbn ABOOT
boot.img BOOT
cache.img.ext4 CACHE
hidden.img.ext4 HIDDEN
hyp.mbn QHEE
modem.bin MODEM
NON-HLOS.bin APNHLOS
recovery.img RECOVERY
rpm.mbn RPM
sbl1.mbn SBL1
sec.dat sec
system.img.ext4 SYSTEM
tz.mbn QSEE
Click to expand...
Click to collapse

Flash through windows if possible
If not then:
Open the tar.md5 file using any archiver.
Extract recovery.img
Put it into your sd card
Put sd card in phone
Boot into twrp
Go to install.
Where it is written images tap so it changes to zip
Navigate to your sd card where file is placed
Install recovery.img
Reboot
Sent from my SM-A500F using XDA-Developers mobile app

In TWRP go to "Reboot" and then "System".
My galaxy A3 always boot to twrp by itself but from TWRP I can boot normally.
EDIT: Works on TWRP 2.8, not 3.0

ZE550KL with no IMEI after modem reflashing (please help me)

Hello, since i had gps issues i've reflashed the modem on adb and then erased modemst like this:
mfastboot flash modem [email protected]@[email protected]@NON-HLOS-64bit.bin
fastboot erase modemst1
fastboot erase modemst2
So the gps seems to be ok now, but the phone data is stuck on edge, and if i force 3g from the settings it doesn't connect at all
so i've putted stock recovery , wiped all data and installed a complete stock update but with no luck.
anyone have some idea?
EDIT: i've noticed that i don't have imei anymore... how to restore it?

reddevilx said:
Hello, since i had gps issues i've reflashed the modem on adb and then erased modemst like this:
mfastboot flash modem [email protected]@[email protected]@NON-HLOS-64bit.bin
fastboot erase modemst1
fastboot erase modemst2
So the gps seems to be ok now, but the phone data is stuck on edge, and if i force 3g from the settings it doesn't connect at all
so i've putted stock recovery , wiped all data and installed a complete stock update but with no luck.
anyone have some idea?
EDIT: i've noticed that i don't have imei anymore... how to restore it?
Click to expand...
Click to collapse
This is only a theory.
You need to else another rooted device ze550kl.
Commands for new device:
adb shell
su
cat /dev/block/mmcblk0p16 > /mnt/sdcard/modemst1.img
cat /dev/block/mmcblk0p17 > /mnt/sdcard/modemst2.img
Commands for old device:
adb reboot bootloader
fastboot flash modemst1 modemst1.img
fastboot flash modemst2 modemst2.img
The way to "/dev/block/mmcblk0p16" and "/dev/block/mmcblk0p17" is for a device ze500kl. I do not know to way for your device ze550kl.

Thank you Muminek111,
i've tried but with no luck, i've copied and flashed mmcblk0p16 and mmcblk0p17, the files exists but it doesn't change anything.

reddevilx said:
Thank you Muminek111,
i've tried but with no luck, i've copied and flashed mmcblk0p16 and mmcblk0p17, the files exists but it doesn't change anything.
Click to expand...
Click to collapse
I do not know if your device ze550kl has "modemst1" partition name "mmcblk0p16". It's the name for ze500kl device. You have to search in folder dev/block/............ I have the names in folder dev/block/platform/soc.0/7824900.sdhci/by-name.
You can flash back modem partition if you will know the name. The name of my modem partition is mmcblk0p38.

I don't understand;
this is the /dev/block/platform/7824900.sdhci
http://pastebin.com/Ebit7VFJ
this is /dev/block/platform/7824900.sdhci/by-name
http://pastebin.com/fx8FbBdU
modem is p35, modemst1 is p36 and modemst2 is p37?
i think i'm making a mistake because doing so i have a huge modemst2
i also don't understand why restoring a full twrp backup doesn't solve it

reddevilx said:
I don't understand;
this is the /dev/block/platform/7824900.sdhci
http://pastebin.com/Ebit7VFJ
this is /dev/block/platform/7824900.sdhci/by-name
http://pastebin.com/fx8FbBdU
modem is p35, modemst1 is p36 and modemst2 is p37?
i think i'm making a mistake because doing so i have a huge modemst2
i also don't understand why restoring a full twrp backup doesn't solve it
Click to expand...
Click to collapse
I think that the twrp recovery doesn't backs up all partitions.
This are my screenshots the folders from an apk Total Commander.
https://drive.google.com/file/d/0B7F3ZXr565GkYWJJT1ByX0VqQTQ/view?usp=drivesdk
https://drive.google.com/file/d/0B7F3ZXr565GkdXFxSVluSHAzUXM/view?usp=drivesdk
But everything shows to the folder dev/block/
Therefore is the command cat /dev/block/.......... > /mnt/sdcard/modemst1.img

OK, so now with total commander i found that
Modem is 41
Modemst1 is 18
Modemst2 is 19
i've flashed the new ones but i'm still with null imei.
Thank you anyway i've learned something new

You should back up the partition before every command erase partition.

I've made a backup from a working phone but it doesn't work, i think that the board may be faulty.
Thank you anyway

I used Nand Erase All

Hello, I wanted clean flash stock rom on my Galaxy S5 G901F so I did that using Nand Erase All and I did it 2 - 3 times to try different Regions. After the flash was done I was getting "device memory error: the data partition has been corrupted. You need to reset your device to factory defaults. This will erase all your data." After I pressed the button everything was erased and it was working fine. Did I do any harm to my device ?

MachineZZ said:
Hello, I wanted clean flash stock rom on my Galaxy S5 G901F so I did that using Nand Erase All and I did it 2 - 3 times to try different Regions. After the flash was done I was getting "device memory error: the data partition has been corrupted. You need to reset your device to factory defaults. This will erase all your data." After I pressed the button everything was erased and it was working fine. Did I do any harm to my device ?
Click to expand...
Click to collapse
If it was just a partition corruption you should be fine. This is usually just a problem in the partition tables that the phone can't fix without wiping everything and rebuilding all the partitions on the device.
After you run a NAND Erase All, it is usually a good idea to import a PIT using Odin so it can rebuild the partitions correctly.