yashsingh1/xdaforums huggingface dataset:
[One (M7) Q&A, Help & Troubleshooting] francisb:
Hello,

As the title already states i a m looking for a way to get S-off so i can change the CID to a more general one and to go back to stock.

I tried several things like firewater, Rumrunner but all with no luck.

Maybe i am missing something or its because i am on bootloader 1.55, but i need some guidance, if its even possible with my phone.

The strange thing here is that the "version-main" information is empty...... maybe that can cause a problem?

I tried to change the version-main with the "echo "2.24.111.3 " | dd of=/dev/block/mmcblk0p19 bs=1 seek=160" command and restored the "M7 TWRP Nandroid Backup CID T-MOB101 2.24.111.3" backup i downloaded from htc1guru.com and the phone startsup and seems to work great i even recieved an update.

Her some info:

C:\adb>fastboot getvar all

(bootloader) version: 0.5

(bootloader) version-bootloader: 1.55.0000

(bootloader) version-baseband: 4A.17.3250.20

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main:

(bootloader) version-misc: PVT SHIP S-ON

(bootloader) meid: 00000000000000

(bootloader) product: m7_ul

(bootloader) platform: HBOOT-8064

(bootloader) modelid: PN0710000

(bootloader) cidnum: T-MOB101

(bootloader) battery-status: good

(bootloader) battery-voltage: 4278mV

(bootloader) partition-layout: Generic

(bootloader) security: on

(bootloader) build-mode: SHIP

(bootloader) boot-mode: FASTBOOT

(bootloader) commitno-bootloader: dirty-d2906a15

(bootloader) hbootpreupdate: 11

(bootloader) gencheckpt: 0

If a second HTC one can help with this, i have one extra who is not rooted and still stock.

I post the getvar informtion from that phone as well, maybe i can use this phone to bring the first phone on stock.

C:\adb>fastboot getvar all

< waiting for device >

(bootloader) version: 0.5

(bootloader) version-bootloader: 1.57.0000

(bootloader) version-baseband: 4T.29.3218.08

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main: 6.09.401.10

(bootloader) version-misc: PVT SHIP S-ON

(bootloader) meid: 00000000000000

(bootloader) product: m7_ul

(bootloader) platform: HBOOT-8064

(bootloader) modelid: PN0710000

(bootloader) cidnum: HTC__E11

(bootloader) battery-status: good

(bootloader) battery-voltage: 4063mV

(bootloader) partition-layout: Generic

(bootloader) security: on

(bootloader) build-mode: SHIP

(bootloader) boot-mode: FASTBOOT

(bootloader) commitno-bootloader: dirty-6d8a0b9b

(bootloader) hbootpreupdate: 11

(bootloader) gencheckpt: 0

So if someone can help me with this challenge i would be very thankfull
[One (M7) Q&A, Help & Troubleshooting] majmoz:
You can try firewater with various combinations of ROMs and kernels. Some have had success with ARHD and Bulletproof kernel. Should that fail, there is Sunshine S-OFF but it will cost a fee ($25).
[One (M7) Q&A, Help & Troubleshooting] Danny201281:
What errors did you get with firwater and rumrunner?

Your version main was/is blank because you've used a version of TWRP recovery that has the misc partition bug. It is only a cosmetic bug though and doubt it has any effect on the s-off process.

If you found my posts helpful, Please click thanks :good:
[One (M7) Q&A, Help & Troubleshooting] francisb:
Do you know wich ARHD version and Bulletproof kernel version?
[One (M7) Q&A, Help & Troubleshooting] francisb:
Rumrunner stops at pour 8 and tels to reboot and try again, i tried several times.

Firewater says firewater can not work on your device....

I am going to upgrade TWRP to solve the version-main bug...
[One (M7) Q&A, Help & Troubleshooting] francisb:
updated TWRP but still an empty version-main...
[One (M7) Q&A, Help & Troubleshooting] majmoz:
Version-main will remain empty until you flash another firmware package. As Danny201281 stated it is cosmetic. Did you update to TWRP 2.6.3.3?

---------- Post added at 07:33 AM ---------- Previous post was at 07:30 AM ----------

Use ARHD 53.0 or 62.0 and the current Bulletproof kernel. I would try ARHD with the stock kernel first before trying the Bulletproof kernel.

I would keep this site for future reference it has nandroid backups, OTA and recoveries of your version.
[One (M7) Q&A, Help & Troubleshooting] francisb:
i updated to 2.8.1.0.
[One (M7) Q&A, Help & Troubleshooting] Danny201281:
It's best to use 2.6.3.3 with ARHD roms. To avoid set_metedata_recursive errors when installing ;)

If you found my posts helpful, Please click thanks :good:
[One (M7) Q&A, Help & Troubleshooting] francisb:
Well i installed TWRP 2.6.3.3 and ARHD 53.0. Then tried firewater en Rumrunner but no joy.

After that i looked at Bulletproof kernel but it seems s-off is needed to install that kernel.

Version-main is still empty...

So what can i do more?
[One (M7) Q&A, Help & Troubleshooting] clsA:
You need Bulletproof 14.1 to go with ARHD 53 and the kernel does not require s-off
[One (M7) Q&A, Help & Troubleshooting] francisb:
Ok finally S-off by using Sunshine, changed CID to HTC__001

Thanks for all the help.
[One (M7) Q&A, Help & Troubleshooting] francisb:
Now i am on os-5.11.1540.9 HBOOT-1.57m by flashing a RUU zip (WWE) for the correct CID and MID but.....

It downloads an OTA update but says; we have determined that your phone may be running a modified version of its system software.

Is this because i am still S-off?
[One (M7) Q&A, Help & Troubleshooting] clsA:
No ...STAY S-OFF no matter what

Your CID and Software are incorrect, 5.11.1540.9 is Developer Edition

HTC__001 is International .... What RUU did you use, and what did you do between flashing the RUU and getting the Update
[One (M7) Q&A, Help & Troubleshooting] francisb:
Wel i figured that something was wrong with the software. I installed a gurureset version and followed his instructions, did not go back S-on and OTA worked like a charm.

Thanks for all the help guys, together with your information i figure it out at the end.

Francis
[Acer Iconia One 8] stari_alca:
Thanks a lot. Successfully rooted my tablet.

One question. After rooting I rebooted into recovery. The stock recovery booted up. Is there a way to keep the CWM recovery flashed during the rooting process?
[Acer Iconia One 8] Shreps:
We can't flash it for now

This exploit only can boot it

We need to unlock the tab to be able to flash something

Envoyé de mon A1-840FHD en utilisant Tapatalk
[Acer Iconia One 8] M.Ray:
Great Guide!

Unfortunately it doesn't work with the very similar A1-840HD:

http://xdaforums.com/showpost.php?p=56580827&postcount=2158
[Acer Iconia One 8] BadMix:
Hi there,

How did you guys manage to install the MTP device drivers (the one that pops up in Device Manager when you enable the USB debbugging)? I´m on a Windows 7 (32 bits) and the folder we are instructed to download and unzip apparently does not contain the required files/driver.

Any help is appreciated as I can´t manage to pass that initial point.

Thanks in advance,

Mix

EDIT: I eventually got it to install correctly by using the USB Driver package from Acer:

http://global-download.acer.com/GDF...ep3=A1-840FHD&OS=ALL&LC=en&BC=ACER&SC=EMEA_27
[Acer Iconia One 8] stari_alca:
I used the option in the toolkit which installs the drivers. If I remember correctly once you run the .bat file and ACCEPT you are given this option. I used 32 bit version of Win 7 as well.
[Acer Iconia One 8] Matx13:
Works on A1 830 :)
[Acer Iconia One 8] retroben:
I just got the Acer Iconia A1-840FHD from a BestBuy and I want root access.

PLEASE somebody find out how!

I am hoping to get Linux up and running to run WINE on it since it is x86 architecture from being Intel.

Edit:Why did they make the name so similar?

I have the "rootable" FHD and yet there is an HD as well.

I hope rooting still works.

Then again,according to the manufacturing date,they have barely been out.
[Acer Iconia One 8] Shreps:
Did you try this guide?

I'm not sure I understand your post and what you want to do.
[Acer Iconia One 8] retroben:
My product and safety information booklet says FHD on it despite mine only having 1GB of RAM.

Is there a root method working on the A1-840HD?

I may try Kingo since they still get updates and just added an exploit for Nexus Android 4.4.4 as well.

I hope it has support for this device.
[Acer Iconia One 8] borisgregoris:
Is there any way to step back and put everything as it was without root?

For any reason if we need to send the device to the warranty, this should be like original system state.
[Acer Iconia One 8] marko1103:
Well... I don`t have this tablet but think of buying one and I think that this could be done.

CWM has backup feature so I think that you could try backup current ROM and after you did that then root your device and if the problem pops you load CWM again and then restore original state.

If you already rooted then I think that someone that hasn`t rooted the device could make backup of ROM and upload it somewhere on the Internet.
[Acer Iconia One 8] Shreps:
Here is a full UPDATE zip ROM for A1-840 only (not compatible with A1-840FHD), flashable via stock Recovery in case something get wrong with /system

http://mon-nuage.net/A1-840/

Check if you're on a WW_GEN1 or GC_GEN1 Region.

cc [MENTION=1747924]borisgregoris[/MENTION] [MENTION=4821597]social-design-concepts[/MENTION]
[Acer Iconia One 8] borisgregoris:
Many thanks Shreps.

My image is Acer_AV0K1_A1-840FHD_RV0MRC02_WW_GEN1

Your image have "RV0ERC02" instead "RV0MRC02". Is this a problem?
[Acer Iconia One 8] Shreps:
It means that my image is older than yours (which make sense, it's not the latest firmware)

But I think you can get some file from it and make your tab working fine again.

If it doesn't work, you can try to full flash the update zip to "downgrade" to a stable version (and then, you should get some OTA updates to get back to the latest version)

Here is some OTA manual download if needed :

WW_GEN1	AV0K1_RV0MRC02_AV0K1_RV0TRC01	227,47MB	http://global-download.acer.com/GDFiles/Application/OTA/635537141647405935_OTA_Acer_1.0_AV0K1_A.zip
WW_GEN1	AV0K1_RV0MRC02_AV0K1_RV0RRC02	227,33MB	http://global-download.acer.com/GDFiles/Application/OTA/635526789434977662_OTA_Acer_1.0_AV0K1_A.zip
WW_GEN1	AV0K1_RV0BRC01_AV0K1_RV0MRC02	45,86MB	http://global-download.acer.com/GDFiles/Application/OTA/635490499381942196_OTA_Acer_1.0_AV0K1_A.zip
WW_GEN1	AV0K1_RV09RC01_AV0K1_RV0MRC02	49,69MB	http://global-download.acer.com/GDFiles/Application/OTA/635469761667577586_OTA_Acer_1.0_AV0K1_A.zip
WW_GEN1	AV0K1_RV0JRC02_AV0K1_RV0MRC02	42,13MB	http://global-download.acer.com/GDFiles/Application/OTA/635469757626803549_OTA_Acer_1.0_AV0K1_A.zip
WW_GEN1	AV0K1_RV08RC01_AV0K1_RV09RC01	37,53MB	http://global-download.acer.com/GDFiles/Application/OTA/635402969903280635_OTA_Acer_1.0_AV0K1_A.zip

Enjoy ;)
[Acer Iconia One 8] stari_alca:
Hi, thanks for the image. Custom recovery fails for me:

I tried to find some solution, removed the assert line from the updater script and then custom recovery failed the flash because it couldn't verify whole-file signature. I assume the reason for this is because I modified the updater script within update.zip.

Should the assert line specify "A1-840FHD" as the model? Is this why the first error happens?

I'm trying to flash stock and unroot because, sadly, I think I need to send the device back. Having lots of trouble with the touchscreen.
[Acer Iconia One 8] borisgregoris:
Hi, same error here.

After flashing in stock recovery give me the assert failed error.

Its secure to flash the OTA files? I'm curious if they send me the same error that the update.zip. I'm afraid to brick the tab :( .
[Acer Iconia One 8] Shreps:
You're right guys

I didn't tried thoses firmware ZIP and it seems it's for A1-840 (HD) and not for A1-840FHD...

So, I will move the download link (rename the folder).

Sorry for the inconvenience :(

but, [MENTION=1747924]borisgregoris[/MENTION] you can still try to push file that are missing for your camera issue.

I will try to upload a full "/system" pull of my tab this weekend, this will not be flashable, but you will have all system files from my A1-840FHD.
[Acer Iconia One 8] borisgregoris:
I've already copy the missing files to my \system but only in the \app folder. Unfortunately still without camera.

I'm afraid to make things worse.

I don't know if it's secure to make a copy of all your \system structure (without overwriting my files and copying only the missing ones).
[Acer Iconia One 8] Shreps:
You should also set the right permissions and owner to the files like other file in the same directory.

Envoyé de mon One+
[Acer Iconia One 8] Juandr0ide:
Well not yet, we still need to at least unlock bootloader. And porting Lollipop to a non-Lollipop device can be hard without the Intel source code.
[Acer Iconia One 8] marsyx:
did someone try this? MIUI v6

http://miuiv6romdownload.blogspot.sk/2015/03/working-tutorial-how-to-flashing-iconia_51.html
[Acer Iconia One 8] nikagl:
Fake
[Acer Iconia One 8] SuperWind:
its just another one of the fake sites!
[Acer Iconia One 8] Shreps:
Hi,

A quick up on this topic, based on some other thread, it could be because of the option of SuperSU "mount namespace separation", by disabling it + reboot, the camera should work again.

It's part of what SuperSU zip is modifying in the system ROM, including some stuff with SELinux and Namespace Isolation.
[Acer Iconia One 8] dj_aj:
Hey thanks for the update on that issue. Re-rooted and changed that option, so far the camera hasn't crashed. [emoji106]
[Acer Iconia One 8] cogito808:
Just because it is not explicitly posted anywhere, and there were a bunch on sale on eBay recently; Guide 2 worked for rooting my A1-840 (no HD or FD) running the SDs_Acer_AV0K1_A1-840_RV0ZRC03_WW_GEN1 firmware. First time, beautiful. Thanks Devs!
[Acer Iconia One 8] Darrian:
I changed the option in supersu, but my camera still doesn't work (A1-850).
[Acer Iconia One 8] dj_aj:
It's the same for me. Changed the option but the camera crash issue came back after re-rooting.
[Acer Iconia One 8] Shreps:
Damn :(

Can you try guys to set SELinux to Permissive Mode ?
[Acer Iconia One 8] dj_aj:
I will try it later today, thanks for the quick reply.
[Acer Iconia One 8] Darrian:
I'm not entirely sure how to go about doing that. I can't find an option in the settings and the about screen doesn't even show selinux status.
[Acer Iconia One 8] dj_aj:
This is probably the most efficient way to do it:

http://xdaforums.com/showthread.php?t=2524485

or run a terminal emulator and type in

su

setenforce 0
[Acer Iconia One 8] Sonar Killa:
Hello.

Does anyone know if there´s going to be any further android updates from Acer?

Thanks in advance
[Acer Iconia One 8] Juandr0ide:
Most of the new tablets have KitKat 4.4.4, so they will probably get Android Lollipop or M

“An Acer spokeswoman confirmed to V3 that some of the firm's devices, including the Iconia Tab 10, will eventually be upgraded to Lollipop, but declined to give an exact date.”

http://m.v3.co.uk/v3-uk/news/2377089/android-50-lollipop-when-its-coming-to-your-phone
[Acer Iconia One 8] Darrian:
Changing selinux to permissive didn't fix the camera :(
[Acer Iconia One 8] dudeman1st:
Hey guys - quick question. Can anyone point me in the right direction? My stock Iconia Tab 8 (A1-840 (HD)) is bootlooping and doing the dreaded black screen boot. I can get into stock recovery (not rooted) and I can get into fastboot mode. I am assuming that fastboot is like Odin on Samsung. Can I use fastboot to flash a working stock ROM to my Tab 8? I just need a tutorial, as I flash custom ROMs pretty often. I haven't been able to find one. Or, if you can help me run this root exploit in fastboot to replace my recovery with CWM or TWRP, that would be fantastic.
[Acer Iconia One 8] nikagl:
Eh....read post 1??? There's no custom ROMs. Stock ROMs can be flashed from SD using recovery. Get your device out of bootloop by flashing the relevant (for your device) Rom...

Verstuurd vanaf mijn S56 met Tapatalk
[Acer Iconia One 8] dudeman1st:
I tried that, and I did read the entire thread. If you don't have an answer to my specific question,I would appreciate not telling me to "read," as I have been flashing since Eclair. Those stock ROMs won't flash in stock recovery on my device. Perhaps it's because I am on the latest OTA recovery (Acer-AVOK1_A1-840_1.087.00_WW_GEN1). I get the error "end of footer from package.zip not 0xFFFF (Package exists)" + "signature verification failed". If you can tell me how to correct the footer & signature to flash the ROM in stock recovery, I would greatly appreciate that, as well.
[Acer Iconia One 8] nikagl:
Interesting. I answer your specific question with "Get your device out of bootloop by flashing the relevant (for your device) Rom..." as you failed to include enough info in your first post. If you would have included the error in your initial post I would have given you a possible solution/reason already. But as you decided to start telling me what to do or what not to do, I hereby decide not to answer you... good luck getting your device out of the bootloop, maybe someone else is still willing to help you.
[Acer Iconia One 8] dj_aj:
I don't think that there's a CWM or TWRP recovery for A1-840, unless your willing to risk trying the CWM recovery for A1-840FHD. Look at Guide 3 on how to flash that recovery permanently.

I also don't understand why stock recovery is failing to verify the signature on a stock ROM. Maybe it's worth a shot to download the latest stock ROM again from Acer and trying again. Make sure to use SDFormatter to format the sd card prior to copying the rom and flashing it.
[Acer Iconia One 8] johje:
I wanted to say thanks, I just got the Acer A1-840FHD from the recent Amazon deal and was able to successfully root it thanks to this thread. I found an app that is letting me delete the bloatware that came with this tablet and everything seems to be working great. I used the Tethered CWM method and was wondering if there were any great advantages to flashing CWM, since there don't seem to be any ROMs such as CyanogenMod for this device. If any of you know of any great ROMs for the Tab 8 please let me know, but after deleting the bloatware, the stock version of Android 4.4 seems to be pretty good.
[Acer Iconia One 8] bballengphd:
enable SD Card access in Settings/Apps

Thanks to all the great discussions and descriptions from OP and other members here, I was able to successfully root my 840FHD. Now I have another problem at hand.

I wanted to move apps to the external SD card, but with this tablet being at 4.4.2, I have tried many different apps and fixes, including the permissions fix which I found here on XDA, but none seemed to work.

Has anyone tried the fixes and managed to get apps onto the external SD?

TIA.
[Acer Iconia One 8] dj_aj:
You need to format the external sd card to ext3 and use an app called link2sd to move the apps to external storage.
[Acer Iconia One 8] bballengphd:
Thanks for the tip. I will give it a try later tonite.
[Acer Iconia One 8] bballengphd:
Thanks to dj's advice, I manged to copy some apps to external SD via the link2SD app.

However, for my acer tablet the external SD card needed to be formatted to ext2, then the tablet woudl recognize the partition and was able to mount the ext2 partition.

One thing that irks me is the many (too many!) apps that Acer set up as system apps, which link2SD would not let me move. :(
[Acer Iconia One 8] abced123:
twrp recovery and xposed

confirmed to root successfully by OP's method . I wonder if we have TWRP recovery ? and anyone tried to install Xposed framework for x86 yet?

Btw, the tab is fast , near S800 chip, but no light and proximity suck. I get used to knock code and gravity screen on/off , any similar method ?
[Acer Iconia One 8] johje:
​

I think you can use Link2SD to remove the apps installed to the system folder and then you can either reinstall them from the Play Store where they should install as normal apps that you can move to the SD card, or you can back up the .apk and I think you should be able to sideload the app, then move it to the SD card. I haven't had time to test this yet, but that is my plan for any of the Acer bloatware I would like to keep. Speaking of that, has anybody used the Acer ab apps and liked them? I already have the Synology diskStation apps that pretty much do the same thing, but run from the NAS instead of my PC. I also have Plex, does abVideo do any sort of transcoding?
[Acer Iconia One 8] bballengphd:
Link2SD would not let me move system apps, at least not the free version. I did manage to find system/app mover and convert system apps to user apps, then move it to the sd card or delete it.
[Acer Iconia One 8] CSP III:
FYI.....Just finally got around to rooting my 840FHD.....All good, no problem with process. Sadly though, I too have the "camera crash issue" with stock camera. With camera app "Open Camera" upon opening it reads "failed to open camera. Camera may be in use by another application? Just throwing this out there. Thanks for the process.
[Acer Iconia One 8] qu3becker:
Same problem here too.

I just want a fix for now like going back to full stock.

I had the same issue as the previous guy trying to flash the firmware, I don't remember the error code exactly, it's something about footer and signature. It's getting late.

Most probably because my A1-840FHD has a newer software. I'd like to know how or where to get the firmware but I just bought the thing so I'll just go back to the store and get a refund and buy it again or simply exchange it and wait until someone else find what's causing this problem before rooting it again.
[Acer Iconia One 8] Soapm:
Thanks OP
[Acer Iconia One 8] Shreps:
B1-820 Rooted !

Hi,

FP updated with the updated Launcher by [MENTION=4821597]social-design-concepts[/MENTION]

Tethered CWM confirmed ok on Acer Iconia One 8 (B1-820) running Lollipop 5.0
[Acer Iconia One 8] dj_aj:
Quick update on the camera crash issue after rooting.

I restored my A1-840 FHD to stock and then re-rooted it using Guide 2 but the only difference this time being that I flashed SuperSU Beta 2.49.

Link: http://xdaforums.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133

It's only been 3 days but so far the camera seems to be working. Also note that I have not removed any of the pre-installed apps like I normally do after rooting.
[Acer Iconia One 8] CSP III:
Right on man. Ill try that myself. Keep us posted if you have any issues after you start removing those apps. (if you in fact decide too)

Thanks a bunch for the update.
[Acer Iconia One 8] photosmart:
can someone help me and say how to get new lollipop rom image file?

I have rooted but there is no way to find a 5.0 or 5.1 rom to flash to acer a1 840fhd?

I find some linkls that try to take money/ask for mobile phone number?

Any link please?
[Acer Iconia One 8] nikagl:
I don't think L exists for A1-840FHD
[Acer Iconia One 8] photosmart:
i think it does.

but i need link.

acctually i know it does exists
[Acer Iconia One 8] bodyjoao:
Where you see ???? I want to...!!!

---------- Post added at 08:18 PM ---------- Previous post was at 08:11 PM ----------

Anyone can tell if this is real.....

http://lollipopupdates.website/pt/d...onia-tab-8-a1-840fhd-16gb-white-nt-l4jee-002/

I apreciate.....
[Acer Iconia One 8] photosmart:
That is one of the links that i found.

But be carefull.

I will not download from them.

They ask for your mobile number and they charge text messages.

It seemed to me that one of most important reasons for root is to put a new 5.x based rom.

It seemed logical that many people that rooted acctualy have upgraded rom.
[Acer Iconia One 8] bodyjoao:
Fake....fake....fake.....
[Acer Iconia One 8] nikagl:
Right, those are hoaxes that exist for all devices that do not have Lollipop yet. Ignore them.... sorry...
[Acer Iconia One 8] CSP III:
Main objective of root is for complete control of device and more importantly to rid device's of all the bloat. There is no lollipop rom for these devices yet. Sorry
[Acer Iconia One 8] photosmart:
ok i see now.

too bad.

thanks anyway for the help

we are waiting i guess...... something that will never come
[Acer Iconia One 8] qu3becker:
No problem so far? I'll probably root again soon if you don't have any problems with root.