Develop Bugs

[Q] [HELP] Trying to flash TWRP on V50020b

Im trying to flash TWRP on my v50020b but cannot seem to do it. Its currently on the stock 4.4.2 GB rom. Please can someone advise me how to do this.
Thank You.

You can use dd to write the aboot.img of 4.2.2 back. This will allow the old Loki flash method.
Sent from my LG-V500 using Tapatalk
---------- Post added at 01:25 AM ---------- Previous post was at 01:07 AM ----------
http://forum.xda-developers.com/showthread.php?t=2698267 Step 3
Sent from my LG-V500 using Tapatalk

bloommax said:
You can use dd to write the aboot.img of 4.2.2 back. This will allow the old Loki flash method.
Sent from my LG-V500 using Tapatalk
---------- Post added at 01:25 AM ---------- Previous post was at 01:07 AM ----------
http://forum.xda-developers.com/showthread.php?t=2698267 Step 3
Sent from my LG-V500 using Tapatalk
Click to expand...
Click to collapse
i tried doing this couldn't get it to work.. i have of done it wrong?
could you post the steps in noob style?
or does anyone know of a guide on how to install a custom recovery on a V50020b running stock 4.4.2 (i managed to root just need recovery)

gklute said:
i tried doing this couldn't get it to work.. i have of done it wrong?
could you post the steps in noob style?
or does anyone know of a guide on how to install a custom recovery on a V50020b running stock 4.4.2 (i managed to root just need recovery)
Click to expand...
Click to collapse
I had the same problem until I ran across this post: http://forum.xda-developers.com/showthread.php?t=2698267 {Acually the same you quoted}
If you'll go down to the download Step #3 and copy that zip file to your computer and unzip it and run the bat file it will install TWRP v2.7. Of course you'll have to install the LG USB drivers and install from your computer. (Won't work otherwise) Also be sure and use the second down connection for USB on your tablet - M-something, but not the charging one.
Also - get a good reboot app so you won't have to hold the buttons.

ruhelking1 said:
Im trying to flash TWRP on my v50020b but cannot seem to do it. Its currently on the stock 4.4.2 GB rom. Please can someone advise me how to do this.
Click to expand...
Click to collapse
You're being vague! Which TWRP?

Cal said:
I had the same problem until I ran across this post: http://forum.xda-developers.com/showthread.php?t=2698267 {Acually the same you quoted}
If you'll go down to the download Step #3 and copy that zip file to your computer and unzip it and run the bat file it will install TWRP v2.7. Of course you'll have to install the LG USB drivers and install from your computer. (Won't work otherwise) Also be sure and use the second down connection for USB on your tablet - M-something, but not the charging one.
Also - get a good reboot app so you won't have to hold the buttons.
Click to expand...
Click to collapse
I also have this version V50020b and this method didn't work.
When boot to recovery there's still the android recovery!!
What am I doing wrong?
Thanks in advance.

luisbraz said:
I also have this version V50020b and this method didn't work.
When boot to recovery there's still the android recovery!!
What am I doing wrong?
Thanks in advance.
Click to expand...
Click to collapse
You're quoting an old post (way back in April 2014).
1st - Do you have a recovery installed?
2nd - If so, you should update to at least TWRP 2.800
I may be confused about exactly what you are doing...now if you're only booting with the buttons (power-sound down, sound up) that is the message you get and you have to push 'power' 2 times to enter recovery. Are you doing that when you see the display of android recovery after using the cold boot, then the volume and power buttons?? And you are expecting to see TWRP opening, but instead of going straight to TWRP recovery - you're getting what you say 'Android Recovery', or Factory Reset?
Post back so we will understand please. Hope I'm not being confusing in my answers...

Cal said:
You're quoting an old post (way back in April 2014).
1st - Do you have a recovery installed?
2nd - If so, you should update to at least TWRP 2.800
I may be confused about exactly what you are doing...now if you're only booting with the buttons (power-sound down, sound up) that is the message you get and you have to push 'power' 2 times to enter recovery. Are you doing that when you see the display of android recovery after using the cold boot, then the volume and power buttons?? And you are expecting to see TWRP opening, but instead of going straight to TWRP recovery - you're getting what you say 'Android Recovery', or Factory Reset?
Post back so we will understand please. Hope I'm not being confusing in my answers...
Click to expand...
Click to collapse
I know that is an old post. I was trying to flash the TWRP recovery without any downgrade of the software, since this method was suposed to work with the software version V50020b.
I simply want to flash TWRP recovery, the tablet is all stock with root (TowelRoot), but I just realised that I have to downgrade the software (http://forum.xda-developers.com/showpost.php?p=58198471&postcount=44), and wanted to avoid this! I already softbricked the tablet with only 3h of usage, and now I'm a little afraid! lol
Do you now any method that works without the downgrade trick?
Thanks.

Flash TWRP with flashify (root) - (from Play Store).
This *should* work & if not I think no harm will come ... Flashify.app just won't 'work' if things are not correct.
Good luck!

Cal said:
Flash TWRP with flashify (root) - (from Play Store).
This *should* work & if not I think no harm will come ... Flashify.app just won't 'work' if things are not correct.
Good luck!
Click to expand...
Click to collapse
I did that. That's what softbricked the tablet!

luisbraz said:
I did that. That's what softbricked the tablet!
Click to expand...
Click to collapse
I would shut the tablet completely down.
You should be able to use the 'buttons' to get to 'Factory Reset'. Do what you know: Power/+down then all 3. If you can't get to TWRP, it must not be installed.
Check with a command window. Be sure & use 'su'. Ask a guru 'how'...I may not be 'expert' enough!

ruhelking1 said:
Im trying to flash TWRP on my v50020b but cannot seem to do it. Its currently on the stock 4.4.2 GB rom. Please can someone advise me how to do this.
Thank You.
Click to expand...
Click to collapse
Hi, i had the same problem as yours with v50020d 4.4.2
first i rooted with ioroot http://forum.xda-developers.com/showthread.php?t=2776198
second install step 3 http://forum.xda-developers.com/show....php?t=2698267
you have to run "runme.bat" from the zip. If did not install here is a post that helped me http://forum.xda-developers.com/showpost.php?p=54027265&postcount=9
then flash witch recovery you want with flashify or twrp app
if you have any questions message me.
good luck

Need help solved

I was on cm 13 something and flashed cm 14.1 everything was working ok but i didnt flashed gapps zip.
so i tried to go into recovery and there was no recovery anymore...
then i reset cm 14.1 that i can start from a fresh rom and since then i cant start my phone
i dont have a recovery i can get in but i can get into fastboot mode
hope someone is able to help me and could tell me what to do / try to install a working system again

Inlacrimas said:
I was on cm 13 something and flashed cm 14.1 everything was working ok but i didnt flashed gapps zip.
so i tried to go into recovery and there was no recovery anymore...
then i reset cm 14.1 that i can start from a fresh rom and since then i cant start my phone
i dont have a recovery i can get in but i can get into fastboot mode
hope someone is able to help me and could tell me what to do / try to install a working system again
Click to expand...
Click to collapse
Use this toolkit on a pc to fix your recovery, forum.xda-developers.com/oneplus-3/development/toolkit-oneplus-3-toolkit-unlock-t3398799
Hope it helps.

JoshDaWhite said:
Use this toolkit on a pc to fix your recovery, forum.xda-developers.com/oneplus-3/development/toolkit-oneplus-3-toolkit-unlock-t3398799
Hope it helps.
Click to expand...
Click to collapse
i am not that familir with all these kinds of stuff
what would be the steps i had to do ?

Inlacrimas said:
i am not that familir with all these kinds of stuff
what would be the steps i had to do ?
Click to expand...
Click to collapse
Download the toolkit and unzip it. Launch the bat file and the find the option to flash twrp recovery.

JoshDaWhite said:
Download the toolkit and unzip it. Launch the bat file and the find the option to flash twrp recovery.
Click to expand...
Click to collapse
it doesnt find my device
when i press 7 it tells me error device not found

Inlacrimas said:
it doesnt find my device
when i press 7 it tells me error device not found
Click to expand...
Click to collapse
Enter fastboot mode. Connect device to pc. You need to download the attached zip. Unzip it, open the folder until you see a bunch of files.Click the back button, select the folder, press Shift and click the right side of the mouse, and select open command window here.use the command fastboot devices and report back.

This is the zip I told you about.

JoshDaWhite said:
This is the zip I told you about.
Click to expand...
Click to collapse
nothing happend to the phone stays in fastboot

Inlacrimas said:
nothing happend to the phone stays in fastboot
Click to expand...
Click to collapse
Yes but the command returned any results?

JoshDaWhite said:
Yes but the command returned any results?
Click to expand...
Click to collapse
yes 9771bc7e fastboot like in the linked picture

Inlacrimas said:
yes 9771bc7e fastboot like in the linked picture
Click to expand...
Click to collapse
Unfortunately the picture is too small to read from it. It is great! It means your device can receive fastboot commands! I can guide you how to install stock Oxygen os 3.2.7. That also means you lose your data from internal storage. Do you want Oxygen os 3.2.7?

JoshDaWhite said:
Unfortunately the picture is too small to read from it. It is great! It means your device can receive fastboot commands! I can guide you how to install stock Oxygen os 3.2.7. That also means you lose your data from internal storage. Do you want Oxygen os 3.2.7?
Click to expand...
Click to collapse
i want any system that works currently since i cant get into recovery ^^
if i can go back into recovery i should be able to manage stuff on my own or i just flash rom xyz afterwards then thats no big deal
you can click on the magnifying glass to make it bigger :good:

JoshDaWhite said:
Unfortunately the picture is too small to read from it. It is great! It means your device can receive fastboot commands! I can guide you how to install stock Oxygen os 3.2.7. That also means you lose your data from internal storage. Do you want Oxygen os 3.2.7?
Click to expand...
Click to collapse
i tried arround and managed to flash twpr with the programm but nothing has changed cant boot into recovery

Inlacrimas said:
i tried arround and managed to flash twpr with the programm but nothing has changed cant boot into recovery
Click to expand...
Click to collapse
Flash the stock recovery then sideload Oxygen os.

JoshDaWhite said:
Flash the stock recovery then sideload Oxygen os.
Click to expand...
Click to collapse
tried flashing stock recovery phone powers of or rebbots or something
how can i sideload theoxygen os ?
Think i just helped myself with
https://forums.oneplus.net/threads/guide-mega-unbrick-guide-for-a-hard-bricked-oneplus-3.452634/
works again thanks for your help

Inlacrimas said:
tried flashing stock recovery phone powers of or rebbots or something
how can i sideload theoxygen os ?
Think i just helped myself with
https://forums.oneplus.net/threads/guide-mega-unbrick-guide-for-a-hard-bricked-oneplus-3.452634/
works again thanks for your help
Click to expand...
Click to collapse
Glad you fixed it.

JoshDaWhite said:
Glad you fixed it.
Click to expand...
Click to collapse
Really appreciate all the time you spent helping here :good:

Inlacrimas said:
I was on cm 13 something and flashed cm 14.1 everything was working ok but i didnt flashed gapps zip.
so i tried to go into recovery and there was no recovery anymore...
then i reset cm 14.1 that i can start from a fresh rom and since then i cant start my phone
i dont have a recovery i can get in but i can get into fastboot mode
hope someone is able to help me and could tell me what to do / try to install a working system again
Click to expand...
Click to collapse
Fyi, if u decide to go back to 14.1, you will need to flash modified twrp http://forum.xda-developers.com/devdb/project/dl/?id=21065&task=get
Then recovery will stay intact

LG G4 keeps booting in recovery mode (TWRP)

Hi,
I made a CM14 update yesterday, but since then, my phone boots in recovery mode. I tried to reinstall TWRP, in current and previous versions, and other roms (I can flash), but nothing works; each time I reboot, TWRP appears...
Any hint ?
Thanks very Much !

gdoucou said:
Hi,
I made a CM14 update yesterday, but since then, my phone boots in recovery mode. I tried to reinstall TWRP, in current and previous versions, and other roms (I can flash), but nothing works; each time I reboot, TWRP appears...
Any hint ?
Thanks very Much !
Click to expand...
Click to collapse
Try to install my latest BETA (check my signature)

steadfasterX said:
Try to install my latest BETA (check my signature)[/QUOT
Hi, thanks for your answer. I tried, but it still reboots on TWRP... (tried to install AICP).
There's an error message when installing :
patching system image unconditionnally
E:unknown command [log]
But it keeps going on with "dectected filesystem ext4 for /dev/boot [...]
Then it reboots in recovery...
Click to expand...
Click to collapse

gdoucou said:
steadfasterX said:
Try to install my latest BETA (check my signature)[/QUOT
Hi, thanks for your answer. I tried, but it still reboots on TWRP... (tried to install AICP).
There's an error message when installing :
patching system image unconditionnally
E:unknown command [log]
But it keeps going on with "dectected filesystem ext4 for /dev/boot [...]
Then it reboots in recovery...
Click to expand...
Click to collapse
Please try build 186
Click to expand...
Click to collapse

dont work for me same Probleme

TooThPicK said:
dont work for me same Probleme
Click to expand...
Click to collapse
Try my latest beta and if that is not working build 186
And which nightly causes that problem?

i think its not the recovery i test the cyanogen and this dont work
test installing stock but dont work
testet both not working
no Rom is working evrytime its boot to recovery

TooThPicK said:
i think its not the recovery i test the cyanogen and this dont work
test installing stock but dont work
testet both not working
no Rom is working evrytime its boot to recovery
Click to expand...
Click to collapse
Which cm version? tell exact build date.
Try to reflash stock kdz

Is there a way to Flash kdz from fastboot or recovery lgup dont find my device
ok i find the download mode now lgup find my device i downloading 20g and test

The issue is due to change in Google code not being compatible with TWRP.
I had the same issue, I flashed stock ROM with LGUP and then flashed CM14.1 after that.
Once your back up and running you can't use the in built updater, you have to download the update, manuay reboot to recovery and then flash.

Lgup dont find my device i only have recovery and fastbood

ceanth said:
The issue is due to change in Google code not being compatible with TWRP.
I had the same issue, I flashed stock ROM with LGUP and then flashed CM14.1 after that.
Once your back up and running you can't use the in built updater, you have to download the update, manuay reboot to recovery and then flash.
Click to expand...
Click to collapse
The change in Google code was the reason for one of the beta series I made. I was able to fix that in twrp even when this is no twrp issue. The internal updater worked fine afterwards when using any build after 15 of dec while using my latest beta.
That's why I ask several times what cm build they used (both do not answered this yet).
This is important so I can reproduce the issue and may can release a new twrp workaround if possible.
.

TooThPicK said:
Lgup dont find my device i only have recovery and fastbood
Click to expand...
Click to collapse
Not sure dude, best to post in the dedicated TWRP or cm14.1 thread.

its fixt thank you for your help the trick is turn off the g4 hold the + button and plugin the cabel now the device comes to downloadmode and now lgup is working
---------- Post added at 02:30 PM ---------- Previous post was at 02:28 PM ----------
steadfasterX said:
That's why I ask several times what cm build they used (both do not answered this yet).
This is important so I can reproduce the issue and may can release a new twrp workaround if possible.
.
Click to expand...
Click to collapse
on my is the nigtly from 23.12

I got the same problem booting permanently in TWRP.
Flashing the build (02.12.) I had before also doesn't work.
Some kind of tips here?

xXfreshXx said:
I got the same problem booting permanently in TWRP.
Flashing the build (02.12.) I had before also doesn't work.
Some kind of tips here?
Click to expand...
Click to collapse
Install my latest beta. I know that this do not solve the problem but then after flashing it try to boot into system. This will fail. Then pull the recovery log and provide it on http://paste.omnirom.org
If you don't know how to get that log it is easy. Check my FAQ #4 A.
http://forum.xda-developers.com/showpost.php?p=68249027&postcount=3
.

steadfasterX said:
Install my latest beta. I know that this do not solve the problem but then after flashing it try to boot into system. This will fail. Then pull the recovery log and provide it on http://paste.omnirom.org
.
Click to expand...
Click to collapse
Thanks for your reply
https://paste.omnirom.org/view/6e5948df

xXfreshXx said:
Thanks for your reply
https://paste.omnirom.org/view/6e5948df
Click to expand...
Click to collapse
Hm . This is really after a boot into system??...
Ok as I cannot see relevant data pls do the same again but with build 186 now. Provide the log again. The reason is that this build handles the bootloader commands in an other way and I may see then what I wanna see.
Thx
.

Hm . This is really after a boot into system??...
Ok as I cannot see relevant data pls do the same again but with build 186 now. Provide the log again. The reason is that this build handles the bootloader commands in an other way and I may see then what I wanna see.
Thx
.
Click to expand...
Click to collapse
Here you are.
https://paste.omnirom.org/view/594df4ce

xXfreshXx said:
Here you are.
https://paste.omnirom.org/view/594df4ce
Click to expand...
Click to collapse
Hm the reason for that reboot lays somewhere else...
Please tell me exactly what you had done to produce that loop:
Which exact version of cm installed before upgrading?
Upgraded with internal cm updater or by flashing new zip in twrp?
The above would help me to reproduce the issue.
Besides the short questions above it would be great if you could test 2 things for me and if not skip to 3 (if you're in hurry):
1. The hw key combo test
2. The force twrp test
3. Last resort LG up
1. The hw key combo test
Flash the latest beta twrp and reboot into this twrp
Create a full backup if not already done so!!!
Power off the device and pull out the battery
Use the hardware key combo to get into factory reset screen (press vol down + power and keep them pressed. plugin battery. Wait until you see the LG logo and then release only the power button for 1 sec then press it again and keep both pressed until you see the factory reset screen)
Follow through this process and twrp will showing up without resetting anything
Grab the recovery log and paste it again
Then try to reboot to system
2. The force twrp test
If the first method hasn't worked it would be great to see the log anyways but then try the the following:
Boot into twrp (doesn't matter how for this test)
Flash again the latest twrp beta with twrp itself (choose img button at the bottom) and now when getting asked flash it to BOOT partition! Yes this is no problem or causes any damages. Just do it.
Then choose reboot into system and twrp will popup again (but now it starts from boot partition)
Now install the cm version of your choice or any other rom
Do NOT reboot yet
before rebooting grab the recovery log again and paste it again
3. LG up
If the above does not work and as I believe you need your device back soon the best bet would be do a full backup with the latest twrp beta version. Then use LG up to flash stock kdz again to get a working device.
.

twrp problem

Hi anyone can help me. Before i restart my device it automatically boots in bootloader mode. I manage to fix it via fastboot command "fastboot oem fb_mode_clear"
But after that my problem now is when i restart my device it boots on twrp recovery. When i reboot system it also goes back to twrp mode. What is this problem? Any fix for this? Thanks everyone.

Kdx10 said:
Hi anyone can help me. Before i restart my device it automatically boots in bootloader mode. I manage to fix it via fastboot command "fastboot oem fb_mode_clear"
But after that my problem now is when i restart my device it boots on twrp recovery. When i reboot system it also goes back to twrp mode. What is this problem? Any fix for this? Thanks everyone.
Click to expand...
Click to collapse
try hold power & -volume when logo appear hold again to buttons for 10 sec then check

hamad94 said:
try hold power & -volume when logo appear hold again to buttons for 10 sec then check
Click to expand...
Click to collapse
Tried it but it wot fix. Anyways thanks for reaching up bro

What version of TWRP are you using?
If you are on the latest one, try the version before.
https://www.androidfilehost.com/?w=files&flid=126925

Jimi Mack said:
What version of TWRP are you using?
If you are on the latest one, try the version before.
https://www.androidfilehost.com/?w=files&flid=126925
Click to expand...
Click to collapse
I have the latest v3.1.1-0
How can i flash the old one?
Edit. Tried it sir but no success :angel:

Kdx10 said:
I have the latest v3.1.1-0
How can i flash the old one?
Edit. Tried it sir but no success :angel:
Click to expand...
Click to collapse
To flash in TWRP you need to flash it as an image, the option is in there. It will allow you to flash an older or newer version when with in TWRP.

Jimi Mack said:
To flash in TWRP you need to flash it as an image, the option is in there. It will allow you to flash an older or newer version when with in TWRP.
Click to expand...
Click to collapse
Yes sir tried it but still not solved. Now i lost my hope in recovering my device :crying:

Kdx10 said:
Yes sir tried it but still not solved. Now i lost my hope in recovering my device :crying:
Click to expand...
Click to collapse
Just to double check, you have a rom installed right, you did not accidentally wipe that?

Jimi Mack said:
Just to double check, you have a rom installed right, you did not accidentally wipe that?
Click to expand...
Click to collapse
Yes sir. I have 4 different roms in my sd card. The aex, xperience, crdroid and aokp. Im in aex rom before everything is smooth no error when restarting. Until then i decided to try the aokp rom 05/21 nightly build, and after that i flash also a modified boot logo to get rid of the unlock bootloader warning iflash it using fastboot commamd but when i power it on and set up the aokp rom everything goes well but then i need to restart my phone then the problem now is appearing. It directly boot in twrp recovery.

[Recovery] TWRP for maple

I want to share you a great twrp who support aroma installer.
Link:https://mega.nz/#!6MQxWIKa!ZuSMnC7DtXxh4R9Vb5hHMjRFFVk6kaCaHiodn5CSN3M

Blackghosthm said:
I want to share you a great twrp who support aroma installer.
Created by @Myself5.
Link:https://mega.nz/#!6MQxWIKa
Click to expand...
Click to collapse
You need a decryption key.
---------- Post added at 05:10 PM ---------- Previous post was at 04:27 PM ----------
Blackghosthm said:
I want to share you a great twrp who support aroma installer.
Created by @Myself5.
Link:https://mega.nz/#!6MQxWIKa!ZuSMnC7DtXxh4R9Vb5hHMjRFFVk6kaCaHiodn5CSN3M
Click to expand...
Click to collapse
What version of twrp is this?

Beetle84 said:
You need a decryption key.
---------- Post added at 05:10 PM ---------- Previous post was at 04:27 PM ----------
What version of twrp is this?
Click to expand...
Click to collapse
3.2.1 but not that version you can find in twrp.me

Blackghosthm said:
3.2.1 but not that version you can find in twrp.me
Click to expand...
Click to collapse
So how about you push your AROMA fix to the official TWRP trees that everyone can profit from it?
Also that image is certainly not created by me. It might be based on the official TWRP, but the way you put it is missleading IMO.

Myself5 said:
So how about you push your AROMA fix to the official TWRP trees that everyone can profit from it?
Also that image is certainly not created by me. It might be based on the official TWRP, but the way you put it is missleading IMO.
Click to expand...
Click to collapse
Ok, I removed your name.

Myself5 said:
So how about you push your AROMA fix to the official TWRP trees that everyone can profit from it?
Also that image is certainly not created by me. It might be based on the official TWRP, but the way you put it is missleading IMO.
Click to expand...
Click to collapse
More than likely from a Chinese site, possibly modified by @machao44

Beetle84 said:
More than likely from a Chinese site, possibly modified by @machao44
Click to expand...
Click to collapse
Yes,now I have the same idea but doesn't matter I didn't write it created by me,I don't think it have matter for developer because he didn't share the recovery in xda.

I still wouldn't mind if _whoever did it_ would push the fix to the TWRP repository.

Myself5 said:
I still wouldn't mind if _whoever did it_ would push the fix to the TWRP repository.
Click to expand...
Click to collapse
Will this affect all Xperias with 4.4 Kernel? Really happy that @Blackghosthm shared that with Me... Can't wait to push out some awesome AROMA Stuff again!
Thanks a lot to everyone who was involved! :angel:

Myself5 said:
I still wouldn't mind if _whoever did it_ would push the fix to the TWRP repository.
Click to expand...
Click to collapse
I believe it created by storm in xperi fix there are 2 twrp versions one of them is this twrp.
Also i heard in some post it created by storm.

heil Aroma!

@sToRm//
Can you shed any light on who made this?

Anyone tried the new official One? https://dl.twrp.me/maple/twrp-3.2.3-0-maple.img.html

Hi I am quite having a hard time figuring out how to install TWRP on my XZP dual global version.
I already flashed the latest firmware last August... I also tried to follow installing it through ADB using command prompt yet nothing did work... Is there someone out here who can help me with flashing TWRP... Thanks

I use in this moment the original 3.2.3-0 version.
Where's is the problem to install TWRP? enable adb, call adb during running phone and accept the PC all time.
If the bootloader unlocked,, boot in Fastmode (hold Volume up during connecting the USB cable with the PC) . Check the driver via fastboot devices, If you see the phone call fastboot flash revovery TWRP. img (if your TWRP version has the name "TWRP. img"). After that you can boot into TWRP

Excappare said:
Hi I am quite having a hard time figuring out how to install TWRP on my XZP dual global version.
I already flashed the latest firmware last August... I also tried to follow installing it through ADB using command prompt yet nothing did work... Is there someone out here who can help me with flashing TWRP... Thanks
Click to expand...
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You need to flash a kernel from a custom ROM first (like CarbonROM) in order to be able to boot from the recovery (FOTAKERNEL) partition. The stock kernels have recovery built-in and would use that instead of TWRP. You can get a CarbonROM kernel image (boot.img) from its flashable zip.
After flashing a custom kernel you can then flash the TWRP image via "fastboot flash recovery <recovery image>". You'll have to reboot the phone and follow the usual button combination (though I don't really know it's holding volume up or down) to access the recovery. Using "fastboot boot" will not work and it'll stuck on the Sony logo with the blue fastboot LED stay on.

I think twrp found from this thread,,you can check TWRP Folder,
,https://forum.xda-developers.com/showpost.php?p=78121448&postcount=4

I've also the Stock Kernel (Pie) on the phone and can reach TWRP without any problems : you must hold Power and Volume (up or down? Not sure in this moment) till you see TWRP on the Screen (around 6 Sec.) Maybe the screen switched off... Switch it on via short press via Power... That's all