Lost stock recovery on ACER B3-20 after failed update (rooted) - Android Q&A, Help & Troubleshooting

Hi,
I own an Acer B3-20 tablet with stock firmware, rooted via kingroot and unkingrooted with supersu me pro.
An OTA update came today for my tablet and I did proceed not thinking about the root thing.
The update failed with the file
Code:
/usr/bin/debugd64
found not equal to the one expected. I assume it is the rooting process that changed that file.
No damage was done when I rebooted. All was there.
So I said to me. I am gonna reflash (OS_Acer_AV0L0.B3-A20.RV03RC06.WW.GEN1_A51L_A.zip) the stock firmware from SD Card to get rid of root but when I got into recovery mode (power+ vol up) I discovered that menu in chinese instead of stock recovery. OMG!
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Edit: looks a lot like this
I tried again the update after deactivating super su. (unrooting ?). It failed to do the update again but drop me it what seems to be exactly the stock recovery. So I used it to reflash the original firmware provided by Acer for the tablet. hence unrooting completly. and proceed to make the update again which worked this time. :silly:
Did you get the new chinese recovery after the update ? my build is now: Acer_AVOLO_B3-20_RV07RC01_WW_GEN1
How did I get the original stock recovery given I have already reflashed the original firmware and did not get it back (but I applied the OTA update on top of it) ?
What does every line of it mean ? Can somebody translate this menu, please ? the last one is reboot . It's all I manage to get
first highlited line seems some low level stuff and all this does not seem to be the recovery in chinese.
Thanks

Thread closed at request of OP.

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[Q] Need help with getting CWM on my sola

Hello guys
How do i get CWM on my SOLA
as from yesterday i am trying to get my xperia sola (4.0.4/B.1.54) rooted and fitted with cwm so i can install Xnovator rom on my phone
so far i have managed to obtain root and i have tried installing cwm with RecoverX, while the program works i cant seem to access cwm in any way
i tried vol up / down + power i have tried all together but nothing, olso via rom manager i tried selecting the option reboot in recovery but it will just boot normally, ive olso tried xparts in the market but it is stuck on loading info
i will now say what i did step by step following this
http://rjmaharjan-techspot.blogspot.nl/2013/05/how-to-root-sony-xperia-sola-with-most.html
so using flashtool i flashed the tft -> screen went black -> after that i used the Root_with_Restore_by_Bin4ryv31 (manually took the latest)
and so i obtained root that way, after this i tried getting cwm with recoverx, but it doesnt seem to have installed any cwm
what am i doing wrong, im spending to mutch time on it already while it is probably something really stupid i am missing
thanks for reading :victory:
see this http://forum.xda-developers.com/showthread.php?t=1952912
i will try, not sure if my loader is locked tho 100%
will post back if it worked
thanks
it worked and i could enter CWM
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
flashing a rom got me this error tho
i have no idea what is wrong
i am trying to flash
http://forum.xda-developers.com/showthread.php?t=2414412

[Q] Root and flash difficulties (solved)

Like this:
Already had P780 4 GB which gone to smoke LINK
I used SLX Rom
Cause i love P780 i purchased it again, but with 8GB. Like stupid i upgrade it to s226 over first WLAN without planing easy root with FAMAROOT.
Next thing i done is to root it by THIS MANUAL and everything gone perfect.
Normally i uninstall lot of things trying to make official like i want it to be but i gone over the top and my phone gone loop, so i have flash SLX ROM v25 but signal was so weak that i OFFICIAL STOCK S226 .
Now when i try to root i have problems:
When i trying to root it with SP_Flash_Tool_v3.1304.0.119 by THIS MANUAL i get this:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
and sometime this
When i try to root it by THIS MANUAL (with GENO) phone restart on 30% but continue after reconnect , on 45% does same thing and last on 60% i get message Root...failed
And when i try to root with latest SP Flash Tool( that is v5.1352.01 ) i get message ''PTM changed for the ROM; it must be downloaded''
Pls help
PS.
Sorry for making new tread but i didn't get any answer on other thread's and i need help urgently
PPS.
sorry for confused English
EDIT:
Stympy partially solved mine problem.
http://forum.xda-developers.com/showpost.php?p=56468218&postcount=19
Problem was that i m stupid.
Looks like on mine factory ROM worked one scatter version but on STOCK recovery work with different scatter
But i still can't flash back to stock
Still can't flash back to stock
Sptool v5 worked for me to flash recovery and than flashed superuser.zip...

Galaxy S4 4.4.2 First time Root - No Command Errors

Hi all,
I got a VZ replacement GS4 the other day and was lucky that it was still running 4.4.2 so I decided to give a go at rooting the device. I tried a few one-click solutions but none seemed to work. I eventually found a method on these forums([How-To] Root I545_NK1 - 4.4.2 (12-1-2014)) by muniz_ri that worked like a charm. Here are all my current info...
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
After gaining root access, I downloaded superuser, Titanium Backup and Rom Manager. First thing I did was back up all my Apps/Data with TB. I wanted to flash some ROMs before I did I went into ROM Manager to backup the current ROM and after the initial reboot I noticed it was not booting into CWM Recovery but what i think is the stock recovery and would show the android for a second and then it would show it "dead" with the error triangle above with the message "No Command". From there I just continued with the system reboot option 1.
I tried a few more times, same result. I even tried TWRP to try to backup the current ROM and I'm getting the same result.
Any suggestions on what can be going on?
I believe people said CWM and TWRP aren't possible for builds beyond MDK cause the bootloader is locked. I think you probably should use ODIN following this to return to factory NC5, get updates to NK1 and get root using this. I think the current way for rooting and backing up is flashfire? maybe you can use that for custom roms. Or someone comes by and corrects me for being dumb

Stuck on boot shows no such file exists

Hi, I tried to restore to stock but still is stuck on boot logo but I can very well go to recovery and download mode,but going to recovery throws errors,one of my friend says that emmc is gone, but I still have hopes, please help me out,I m attaching pics
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Please help me out asap.
Thanks in advance
The pics are too small to see, but the last post I read about this type of problem was internal memory failing.
http://forum.xda-developers.com/note-2-verizon/help/sudden-death-syndrome-t3282788
So was it a standard boot, or did you do some modding first?
Full size pic, btw I was on root66 initially but one day i was
-->trying Adam Outler Jailbreak to unlock my bootloader and my phone was --> dead,after few months I tried to wake it,it started in download mode and also went in to recovery,I immediately Odin to stock out of happiness but alas nothing happened but this.
I tried to
-->ODIN Root66 stock VRALJB 4.1.1 12/2/12- ,voila,it
-->FAILED and I switched on the phone it was stuck in boot,
-->then I ODIN Official VRALJB 4.1.1 but it
-->failed at sboot.bin
and then Finally I tried to
-->ODIN Official VRAMC3 4.1.2 5/5/1 and it
-->PASS but when I switched on nothing happened,it's stuck in this situation. Bootlooped.
Then I went to recovery to factory reset but saw this.No such file exists etc etc.
(
Please help.
http://forum.xda-developers.com/showpost.php?p=30087735&postcount=6
I am thinking of trying this. Is that a good idea?
Good Idea, I would try and odin back to life as a last resort too.
Looks like the download links are all dead?
Might be able to find some files here. https://www.androidfilehost.com/?w=developers&did=77

BRICK!

Hi! I'm posting here because of the low grade (xda doesn't allow me to post in the developing section).
I was running Lineage OS (2018-01-02) when I got an update notification (version 2018-01-23).
I tapped on "Flash" and it automatically rebooted into recovery (twrp-3.2.1-0).
Something went wrong, so I had to manually select the zip file from the lineageos_update directory (/data/lineageos_update).
The flashing process ended without any errors, but when it automatically rebooted it couldn't load boot: it rebooted into recovery.
I manually selected "Reboot into system" from the main menu, but it booted into recovery again.
Then I decided to restore my previous complete nandroid backup (Fulmics Rom, Stock based) but I got a bootloop.
I tried to full wipe the device using LGUP Store (version 1.14.3) combined with Uppercut (version 1.0.0.0) and the proper DLL extracted by the KDZ using a tool called LGFirmwareExtract-1.2.6.1, but the REFURBISH option gives me that error:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
so that the only thing I've been able to do was choose the UPGRADE function in LGUP, but bootloop didn't solved and twrp recovery have been replaced with the stock one.
The KDZ files I tried to flash were:
H85020s_00_OPEN_EU_OP_1114.kdz
H85020a_00_OPEN_EU_OP_1030.kdz
H85010C_00_OPEN_EU_OP_0415.kdz
Can somebody please help me?
You already posted in the LOS thread, so why make a new one?
It may be that Lineage messed up your misc partition, think I've read about something like that before.
Yes and it has been answered in there a few times as well, the last time just yesterday: https://forum.xda-developers.com/showpost.php?p=75324443&postcount=2881
Hi,
Maybe, this could help: https://forum.xda-developers.com/showpost.php?p=71797169&postcount=2
I had the same problem with the stock ROM. My phone only booted to twrp.

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