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Update to Marshmallow - Which ROM and how when TWRP is installed?

Hi everybody,
currently the Lenovo K3 Note runs with Android 5.0 K50a40_S121_150813_ROW (Kao-Alpha2).
OTA provides K50a40_S121_150813_ROW_TO_K50a40_S322_160314_ROW but when downloading the update and confirming the installation phone ends up in TWRP without any further action. I can try to search the downloaded file and install it from TWRP but I did not find it.
When trying to update this file from TWRP by renaming it to update.zip and moving it to the phone update fails with message: unmount of /data failed (-1): Invalid argument script aborted: This package is for "Lenovo K50a40" devices; this is a "Lenovo K3 Note" Error executing updater binary in zip ... Error installing zip file
Does anybody know why this is failing?
Additionally I found within web K50a40_S205_151118_ROW_TO_K50a40_S422_160315_ROW.
Now I am puzzled which ROM version is the correct one? Does anybody by chance know? Could not yet find any information regarding this topic within WWW.
Also I am struggling to get into TWRP by myself. When phone is off and I press volume up and power key I only end up in chinese ROM where I cannot read anything. Can I install OTA version from there? And how can I get into TWRP if wanted?
There are no enhanced reboot menu options and key combination mentioned only brings chinese recovery version up.
Any help appreciated.
Bye

The OTA package can be installed by stock recovery only.
To update the rom using twrp you have to download the full rom.
Sent from my Lenovo A7000-a using Tapatalk

Use flashify from play store to get into twrp it has option to reboot into recovery

Thanks for your responses.
vnwander said:
The OTA package can be installed by stock recovery only. To update the rom using twrp you have to download the full rom.
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Where can I get this from? From Lenovo site?
ncl1968 said:
Use flashify from play store to get into twrp it has option to reboot into recovery
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But TWRP recovery does not work for installing the OTA update! Is there any way to get into stock recovery which is english (I could enter into some stock mode after switching on - but its chinese only)?

If your rooted and have twrp then follow this thread http://forum.xda-developers.com/k3-note/development/official-build-lenovo-k3-note-k50a40-6-t3370537.
If not rooted use KingRoot on PC it worked for me

ncl1968 said:
If your rooted and have twrp then follow this thread http://forum.xda-developers.com/k3-note/development/official-build-lenovo-k3-note-k50a40-6-t3370537.
If not rooted use KingRoot on PC it worked for me
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Thank you (and sorry for that very late reply). I finally managed to install ROM from above mentioned link (was no prio task for quite a long time).
Unfortunately SMS is gone (not existing within that ROM) and not OTA update is shown.
In addition I also cannot install the downloaded OTA version - the same error still occurs: "This package is for "Lenovo K50a40" devices; this is a "Lenovo K3 Note" Error executing updater binary in zip" => so installing the Stock variant from mentioned thread did not help unfortunately!
Is the version from above link already the lastest one? Any ideas, hints, etc.?

TWRP will not install any zip rom i give it

Hello everyone.
I recently isntalled TWRP on an I9305, but when i try to install a new ROM (lineage OS unofficial, AOKP), it gives me the following message:
Installing zip file '/sdcard/lineage-14-1-20180325-UNOFFICIAL-i9305.zip'
Checking for Digest file...
Skipping Digest check: no Digest file found
Failed to map file '/sdcard/lineage-14-1-20180325-UNOFFICIAL-i9305.zip'
Error installing zip file '/sdcard/lineage-14-1-20180325-UNOFFICIAL-i9305.zip'
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Click to collapse
Does anyone have any idea what to do in this situation?

lucasw89 said:
Hello everyone.
I recently isntalled TWRP on an I9305, but when i try to install a new ROM (lineage OS unofficial, AOKP), it gives me the following message:
Does anyone have any idea what to do in this situation?
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Click to collapse
If anyone encounters this problem in the future, and is running a newer version ot TWRP, try downgrading to 3.0.2-1. This worked for me, after trial-and-erroring for a while.

Try this one twrp v3.2.1..
https://drive.google.com/file/d/1RGJ2l6RrKgHzqH9naAPTomop7g3Pr-4j/view?usp=drivesdk

Stuck at twrp
Hello everyone;
Same problem here with TWRP 3.3.1 on S3 9305: Failed to map file….
I have wiped and I feel at risk when telephone says before attempting to reboot: No OS installed are you sure you want to reboot. Anything i can do??
Probably too late to change TWRP version now ??
PS I cannot restore as backup is not available

Unable to flash any ROM. Updater process ended with Error: 255

I have properly followed advice to unlock my bootloader and flash twrp recovery for my sanders.
And whenever I wish to flash any custom rom. I am stuck with option to boot only with stock rom only which i have taken backup before trying to flash any rom
So the error which i am getting constantly while flashing any ROMs, be it AOSP, Resurrection Remix OR Pixel Experience is
Updater process ended with ERROR: 255
Error installing zip file '/sdcard/RR-P-v7.0.1-20190326-sanders-Unofficial.zip'
as marked in RED color.
I have been trying to flash roms but of no help. I even tried flashing Stock rom and trying flashing twrp recovery.
Even as i am writing this thread, I have tried flashing new custom rom but i get same error after all this.
Somebody please help.

chebomsta said:
I have properly followed advice to unlock my bootloader and flash twrp recovery for my sanders.
And whenever I wish to flash any custom rom. I am stuck with option to boot only with stock rom only which i have taken backup before trying to flash any rom
So the error which i am getting constantly while flashing any ROMs, be it AOSP, Resurrection Remix OR Pixel Experience is
Updater process ended with ERROR: 255
Error installing zip file '/sdcard/RR-P-v7.0.1-20190326-sanders-Unofficial.zip'
as marked in RED color.
I have been trying to flash roms but of no help. I even tried flashing Stock rom and trying flashing twrp recovery.
Even as i am writing this thread, I have tried flashing new custom rom but i get same error after all this.
Somebody please help.
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Click to collapse
You need to have a 64bit twrp to flash the ROM , first flash 64 bit recovery than flash the ROM.

Unable to flash any rom. Need help ASAP!!

I was on latest stock PIE. First I tried to flash HEX kernel over stock PIE, but this resulted into bootloop.
Then I tried to flash, AICP and CRDROID, for both, it says, "error applying update: 7(errorcode::kinstalldeviceoppenerror) updater process ended with error 1".
Need help here ASAP. As I unable to boot to system right now. Using TWRP : 3.3.1 as TWRP 3.2.3 gets only black screen.

shivamg95 said:
I was on latest stock PIE. First I tried to flash HEX kernel over stock PIE, but this resulted into bootloop.
Then I tried to flash, AICP and CRDROID, for both, it says, "error applying update: 7(errorcode::kinstalldeviceoppenerror) updater process ended with error 1".
Need help here ASAP. As I unable to boot to system right now. Using TWRP : 3.3.1 as TWRP 3.2.3 gets only black screen.
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Click to collapse
I think Thats because of TWRP 3.3.1 version cuz this version got some issues for installing or updating roms.

Maharram said:
I think Thats because of TWRP 3.3.1 version cuz this version got some issues for installing or updating roms.
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Any suggestion regarding which twrp should I use?

shivamg95 said:
Any suggestion regarding which twrp should I use?
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I have tried pitch black and team win recovery project and everytime i get black screen. Im using fastboot to flash anything but idk u can flash hex kernel with fastboot or not. Just ask it from the hex kernel thread

literally just been messing with the exact same problem - try the pitch black recovery twrp - i cant find the link, have a look, if not come back here and I make available via dropbox or something. Everything failed with the error you get, i tried with this version and pixel rom installing !!!

Can't get past Error 7 on my T710 in TWRP

Hello,
I'm trying to install custom ROMs but I can't get past Error 7 on my T710
Tried different versions of TWRP 3.3.1 and TWRP 3.4.0, tried many other ROMs, tried removing 'assert' from ROMs and many other different methods, still no luck.
Flashed the original firmware now, tried everything over again (flash TWRP, flash ROMs (full wipe/format) and still same issue.
I was able to flash LineageOS on my T713 without any issues, like that ROM a lot and want to use the unofficial version for T710.
Please help.

mx900 said:
Hello,
I'm trying to install custom ROMs but I can't get past Error 7 on my T710
Tried different versions of TWRP 3.3.1 and TWRP 3.4.0, tried many other ROMs, tried removing 'assert' from ROMs and many other different methods, still no luck.
Flashed the original firmware now, tried everything over again (flash TWRP, flash ROMs (full wipe/format) and still same issue.
I was able to flash LineageOS on my T713 without any issues, like that ROM a lot and want to use the unofficial version for T710.
Please help.
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Click to collapse
Any chance of testing older versions of TWRP?

Found this: "Q: Whenever I try flashing any (lineage-17.1) build, I get the following error in TWRP: Updater process ended with ERROR: 7
A: This error appears whenever you try to flash an Q-based rom within a version of TWRP older than 3.4. Simply flash the linked below version 3.4 or higher, reboot back into recovery, and flash the rom zip again. "
From: "https://forum.xda-developers.com/t/...ab-s2-sm-t710-t810-t715-t815-19-9-15.3187202/ "
might help