This post is about the failure to install gapps after flashing ROM and the troubleshooting that ensues.
Posting here, in case somebody might find this helpful. All the best!
I read an article in ibtimes about flashing SuperNexus 4.0 kitkat into Galaxy s3 and I was bored :silly:
I decided to flash SuperNexus 4.0 into my phone, replacing its stock 4.3 Jelly Bean ROM
I rooted the phone first, using Odin 3.0.7 and the CF root that comes with it. It works without hiccups
I downloaded a copy of CWM 6.0.4.6 and flashed it, but it did not work. Failed at Odin. Odin just freezes without failure indication. It took me a couple of hours to finally detach the USB cable and restart the phone out of download mode. It was my first time, of course, I was scared.
I downloaded a copy of CWM 6.0.3.2 and flashed it, it works.
But I decided to download a copy of CWM 6.0.4.5 instead, the one that the ibtimes tutorial links to, and flashed it, it works
However, I can't format /data. I can't mount /data and /system. I can't format Dalvik Cache. I don't have any experience yet, ibtimes seems to indicate that this should not be the behavior, but I moved forward anyway.
I flashed SuperNexus anyway, It works. (flashing SuperNexus is tricky too, I have to edit the updater-script within the zip file to remove asserts. the asserts are causing failure since assert does not match exactly the model number and ROM target)
I tried to flash gapps, but it can't. Reason being that it can't set /system folder during installation setting, probably since CWM can't mount it.
I assumed that the partition is corrupted. I assumed that something messed with the partition since it can't mount it. I assumed that the hiccup while attempting to flash CWM 6.0.4.6 is the culprit
So I mucked around, collecting information on how to do re-partition. However, I ensured that I understand fully about re-partitioning. Since It sounds like it may really brick the phone if I messed it up.
Gathering information about partitioning is a hit miss since the community is filled with reverse engineers. So there are no definitive guide, just guess works.
While following various leads, I tried looking at GPT fdisk since running fdisk shows that /dev/block/mmcblk0 contains only /dev/block/mmcblk0pt1, which leads me to believe that the phone needs gdisk to check the partition (I read this in La Grande partition table reference in xda). I tried to follow this lead, but I have trouble finding gdisk that was compiled for android. When I do find one, I have trouble executing it. I can't seem to be able to chmod it to 764. I dropped this lead.
I flashed Cyanogenmod 10.3, thus reverting back to Jelly Bean 4.3 because SuperNexus 4.0 is not stable yet. Ironic yes? (Removed assert too)
Cyanogenmod works well, in fact, altough I failed to install gapps, the phone is working perfectly. This niggles me into doubting that there is any fault with the partition or the phone.
I tried to sideload gapps. To sideload gapps, I need to run adb alongside CWM in sideload mode. CWM in sideload mode causes the PC to not recognize the phone. It shows the phone as GT-I9305 unknown device.
I failed at finding the driver that could recognize that. Reading off the internet leads me to assume that Windows 8 does not support the USB driver.
I also have this niggling feeling that maybe it is the CWM that is causing the driver problem in sideload mode, since it should be the CWM that communicates with adb.
I re-flashed CWM 6.0.3.2 in hopes that it is more stable.
I now I can connect sideload on adb, but I can't sideload it, because of error, but it looks better since there is actual communication between the phone and abd. Furthermore, device manager identifies the phone as Samsung USB device. I'm feeling optimistic here. Since communicating with adb means the CWM is better than the latest 6.0.4.5. I hope that this CWM can mount /data and /system!
I tried to mount /data and /system on the CWM, lo and behold, it mounted those folders!
I tried to install gapps, the latest one. It soft bricked my phone into boot looping Cyanogenmod, (well at least I believed so since the load takes a longer time than usual) and I did not wait to finish it.
I boot into CWM and format /data /system to reset Cyanogenmod, It works, and loads Cyanogenmod upon reboot
I downloaded the correct gapps version that corresponds to Cyanogenmod 10.3, then booted into CWM and installs the gapps, it works!
I booted into Cyanogenmod and the gapps is finally there!
I opened Google Play, it asks me for my google account. I filled it and all other gapps picks it up, showing contacts, mail and other syncs.
The real culprit? my curiosity? No, CWM 6.0.4.5! Lesson learned: In the world of flashing ROM, the latest might not be the greatest...
Reading you, I could not help but remembering running into the same kind of hurdles a year ago when I rooted and rommed my I9300 for the first time. From my experience, it is quite difficult to brick this phone. I know it, I flashed a kernel instead of a ROM once by mistake.
I never had to tamper with zips, but maybe your S3 is not an international version ?
You should always do a nandroid backup before flashing a new ROM, it can be of great help if something goes wrong.
For the future, I suggest you drop CWM and go to TWRP instead. And as I am running SuperNexus 4.0, and went from CM 10.3 to OmniRom then SuperNexus, I think the stability of these ROMs are comparable. No recurring FCs, no really hampering issues. Probably due to its lack of customizations, I would say SuperNexus is the best of the three in terms of performance.
Anyway, all custom ROMs for Exynos Galaxy S3 usually suffer from issues with graphic drivers (some display elements are badly rendered, I can see it often on wallpapers, as some colors are wrong), and sometimes with the camera. Thanks, Samsung!
The first times flashing can be really stressful, but once you get the hold of it, your phone is running free
Related
Simply put, this is what happens when a rooting newbie discovers custom bootloaders and ROMs.
Current State:
A full stock ROM installed (no root) with the Skrillax V8 bootloader plopped on top of it. (which of course means the recovery-from-boot.p file still exists and that I don't have CWM.) The tablet will show the Acer logo then the Android logo and will give the appearance of booting. Then the icon flashes. It does this intermittently and forever.
What I want:
CM 10+ running with Skrillax and TWRP stably. I'd go with Flexreaper for next choice. Maybe I'll try to compile a KitKat version for it someday. Who knows.
How I managed to get my tablet in this crappy state:
Rooted tab a long while ago with a probably far outdated method.
Looked all over the internet later on how to unlock the bootloader and settled on the manual method in this excellent thread.
I flashed V8 and TWRP without a hitch using nvflash.
I wiped and installed Flexreaper.
I liked it but wanted a higher prize. I make a nandroid backup of it onto the external_sd and wiped and installed CM 10.1 from this thread.
This is where everything started going sour. It told me the install was invalid halfway. Disappointed, I wiped again and tried to restore my nandroid backup. It seemed to restore properly, but then Skrillax hung forever loading the kernel.
I wiped again and installed Flexreaper fresh. This time it booted. I downloaded the newest unofficial version of CM they mention on their wiki.
Booted to recovery and installed CM 10. It ran fine and I was impressed with the new OS. Then I noticed the apparent lack of Gapps.
I flashed the Gapps Jellybean package and rebooted. Skrillax hung.
Wiped everything I could fine in the TWRP menu and installed Flexreaper. Got past the primary kernel loading but the android icon would work for a bit then flash, starting all over again.
At this point I flashed several other recoveries, hoping it was my recovery. No such luck. I tried all of them included in V8.
Then finally, I downloaded full stock ICS and flashed it. I rebooted and noticed the same Android flashing thing.
Finally, I flashed V8 again, being the newbie I was, and then suddenly remembered while trying to boot to recovery that the Full install probably rewrote the recovery-from-boot.p.
And here I am.
Tl;dr version:
Went click-happy with ROMs, wiping, and recovery flashing until I was left with a stock OS that wouldn't boot with a Skrillax bootloader but no recovery.
The good news is, I still have cpuid+sbk, it still boots to APX (no idea how I didn't screw that up too.), and I have a nandroid backup on my external_sd which is probably untouched, since I was careful to not wipe it in TWRP.
Please help me fix this. I don't want an excuse to waste money on a flashy new Nexus or Asus Transformer tablet, I already have too many for my wallet's comfort.
I quess you renamed stock rom to update.zip and than flashed it? If you havent do it, put it on sd card and pres power+vol down (if nuttin happens than vol up). That shld trigger flashing proces
poslato sa elmag radija
uglyjohny said:
I quess you renamed stock rom to update.zip and than flashed it? If you havent do it, put it on sd card and pres power+vol down (if nuttin happens than vol up). That shld trigger flashing proces
poslato sa elmag radija
Click to expand...
Click to collapse
I don't have access to a micro sd card reader if the file must be placed on the micro SD card. I already have flashed the stock rom supposedly via TWRP, so I shouldn't have to flash it again, I wouldn't think. If I do, I guess I'll have to get a reader.
Yes. Micro sd. Rename it. You have guodes gere on xda. Im hoping it will help you.
poslato sa elmag radija
It didn't work. Still in same state as before.
I also have access to fastboot if that would help.
m27frogy said:
Simply put, this is what happens when a rooting newbie discovers custom bootloaders and ROMs.
Current State:
A full stock ROM installed (no root) with the Skrillax V8 bootloader plopped on top of it. (which of course means the recovery-from-boot.p file still exists and that I don't have CWM.) The tablet will show the Acer logo then the Android logo and will give the appearance of booting. Then the icon flashes. It does this intermittently and forever.
What I want:
CM 10+ running with Skrillax and TWRP stably. I'd go with Flexreaper for next choice. Maybe I'll try to compile a KitKat version for it someday. Who knows.
How I managed to get my tablet in this crappy state:
Rooted tab a long while ago with a probably far outdated method.
Looked all over the internet later on how to unlock the bootloader and settled on the manual method in this excellent thread.
I flashed V8 and TWRP without a hitch using nvflash.
I wiped and installed Flexreaper.
I liked it but wanted a higher prize. I make a nandroid backup of it onto the external_sd and wiped and installed CM 10.1 from this thread.
This is where everything started going sour. It told me the install was invalid halfway. Disappointed, I wiped again and tried to restore my nandroid backup. It seemed to restore properly, but then Skrillax hung forever loading the kernel.
I wiped again and installed Flexreaper fresh. This time it booted. I downloaded the newest unofficial version of CM they mention on their wiki.
Booted to recovery and installed CM 10. It ran fine and I was impressed with the new OS. Then I noticed the apparent lack of Gapps.
I flashed the Gapps Jellybean package and rebooted. Skrillax hung.
Wiped everything I could fine in the TWRP menu and installed Flexreaper. Got past the primary kernel loading but the android icon would work for a bit then flash, starting all over again.
At this point I flashed several other recoveries, hoping it was my recovery. No such luck. I tried all of them included in V8.
Then finally, I downloaded full stock ICS and flashed it. I rebooted and noticed the same Android flashing thing.
Finally, I flashed V8 again, being the newbie I was, and then suddenly remembered while trying to boot to recovery that the Full install probably rewrote the recovery-from-boot.p.
And here I am.
Tl;dr version:
Went click-happy with ROMs, wiping, and recovery flashing until I was left with a stock OS that wouldn't boot with a Skrillax bootloader but no recovery.
The good news is, I still have cpuid+sbk, it still boots to APX (no idea how I didn't screw that up too.), and I have a nandroid backup on my external_sd which is probably untouched, since I was careful to not wipe it in TWRP.
Please help me fix this. I don't want an excuse to waste money on a flashy new Nexus or Asus Transformer tablet, I already have too many for my wallet's comfort.
Click to expand...
Click to collapse
Babsector should still work - you would need t do a search for it
It seems to have worked properly, sort of. Flashing FLEXReaper results in an "Encryption failed." prompt at boot, which the button, of course, does not work. Wiping everything works except that the prompt notes "E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p4" Trying to reflash V8 with TWRP with the V8.bat file fails at format. More help?
My tablet is still displaying "Encryption failed", the button still doesn't work, and I still love my a500. Help?
Anyone?
I guess I'm screwed, then.
In the end, I think my data partition failed. Formatting or wiping data fails and when installing FlexReaper, it reports /data size as -1. Unless anyone knows how to fix flash memory, I think I'm stuck.
I've never had problems like this and I've been flashing custom roms and recovery since HTC G1 days. Maybe you chaps can enlighten me a bit.
I can boot into all partitions of my device just fine, regular system, recovery, bootloader all okay. My daily rom (Vanir), however, has been getting a little bogged down lately so I'm trying to do an update.
I transferred my rom and gapps files to the sdcard and boot into twrp 2.6.3.1 to update, but lo and behold, the files are now missing. All my other files are there, just not the rom or the gapps. Not too worried yet, I'll just use the sideload method instead.
Start up sideload and watch it transfer over the new rom (MIUI at this point, and I factory reset before hand). From the cmd line I can see it going over just fine and the device seems to be accepting it as well. It gets to 100% and starts a quick error free install on the device, but when I reboot, nothing has been changed and I'm back in Vanir. Okay...I'll update the recovery and see if a new one works.
So I boot into the fastboot to update the recovery.
Code:
fastboot flash recovery openrecovery-twrp-2.7.0.0-grouper.img
Looks good, no error messages, cmd line shows it has been written, so I reboot into my new recovery, only its not new, its still twrp 2.6.3.1 and everything still doesn't work.
Long story long, I also tried installing CWM instead of TWRP -- didn't work, using adb push to move the files and that didn't work, and every time I seem to just lose the zip files after a reboot or update attempt. In fact, when I boot back into Vanir, all my regular files are there, but even though I haven't removed them none of the rom or gapps zips are anywhere. I am sure they have successfully transferred multiple times, but they never seem to make it through a boot sequence.
At this point I'm stuck, and wondering about my boot partitions being messed up. Any help you can provide is much appreciated.
Update, with new information.
I tried to do a complete wipe a la the guide that's stickied in this forum, and it's led me to a bit of new information. It seems that my bootloader is repeatedly failing to update from version 3.23 every time giving either the "InvalidState" error, or when I use older bootloaders that are supposed to work like the JWR66V bootloader mention in this post, it doesn't say "InvalidState" but still fails just the same with a blank where it would say "InvalidState".
I've also realized that none of my changes to my tablet are persisting through a boot sequence. If I download a new app, it is gone upon restarting. In fact, every time I power it up, it downloads the same 3 app updates to the device. Perhaps that can help narrow the problem down a little bit? Sounds like a data wipe is happening every time, but only for changes since I began to try to update the tablet a few days ago, all my files from before the update attempt are never removed or altered at all.
Lastly, according to Rom Manager, I have both TWRP and ClockworkMod as recovery. Actually, that makes me think it might be a boot.img issue. If anyone has any ideas at all, I am open to try any of them at this point. Thanks for reading and for your suggestions in advance!
So, yesterday i tried to install Euphoria OS on my phone, but in all of a sudden, the /cache partition corrupted, i was dumb enough and deleted it via TWRP, making my phone fall into the QPST status.
After fixing it, i proceeded and reflashed KitKat, but the phone only shows 8GB instead of 16GB, so i tried to fix this by flashing TWRP, everything went well, until i upgraded to Lollipop again.
It always bootloops no matter what i do, i really need my phone with my 16GB of storage back, it isn't a Hardware failure since the QPST diagnosis didn't say anything about mobo failures.
I can mount all the partitions, i can wipe it all, i can boot into bootloader and recovery, i can do basically everything but booting the system.
Any light on this? it either happens after i flash TWRP or after i try to root it.
Im running Android 5.1.1 stock.
List of tutorials i have tried (In order): http://forum.xda-developers.com/nexus-4/general/wip-unbricking-nexus-4-using-qpst-t2208289
http://forum.xda-developers.com/nex...unbrick-n4-t2347060/post43164157#post43164157
http://forum.xda-developers.com/google-nexus-5/help/nexus-5-stuck-boot-loop-lollipop-t3098632
Don't you dare tell me to reflash the ROM again, this is the first thing i have done, i did this 20 times already and it never worked. It isn't a ROM problem. It is a partition problem somewhere.
Fixed, had to use LGNPST to reflash JB 4.4.2, then upgraded to a ZIP version of the Lollipop ROM, then flashed the stock one.
I'm having the same problem with my Nexus 4. I read also about LGNPST, but I remember something about flashing the Optimus G cache partition I believe, then manipulating one of the prop files afterwards in order to get your 16gigs back. The problem is that all of the files needed to do this flash are attached to a stupid downloader site and so its full of pop up windows and adware from what I've seen. I can't get mine to boot into system, or bootloader, or recovery, etc. The device will not finish looping for debugging to be enabled, and even trying to boot into download mode is not happening. I've tried all I know to do, especially considering fastboot and adb both utilizeusb debugging. I really am baffled. Any root kits I've tried also don't work so far. Help please.
Hi,
Yesterday I "blindly" installed the latest CM nightly without noticing that I was installing CM13... After the install, no Google App was working (as expected). When I noticed I had installed CM13, I tried downloading OpenGapps (all from nano to stock for ARM, -not ARM64-), and none of these can be installed, I always get an error (Status Code 1). After a lot of trying, I coundn't even make a wipe (I got an error while formatting data).
After flashing a stock ROM via Odin, the phone worked again, so I tried reinstalling. Now the issue I have is that I can't install any custom ROM to the phone, I have tried flashing CyanogenmodRecovery (for CM12 and CM13) and CWM 6.0.4.7, all of them let me install the latest CM12.2 nightly (26.12), but the phone always hangs on the Cyanogenmod Bootscreen. Wiping is not showing any errors anymore.
Any thoughts? Am I missing something? I am relatively new to the S4, and I got mine already with CM11 on it, and until yesterday I was always able to update without any issues... Am I missing some step?
Small update: I get some errors in the recovery logs: unable to mount /efs. I don't understand why I get this error when a OEM Kitkat works, but well, will keep trying, maybe I find a way to get it working...
1. Use TWRP, CWM is outdated.
2. "Nightly" realeases are testing firmwares. CM13 for GT-i9505 is in early releases too. They have lot of bugs still.
3. - Download the latest stable CM firmware: HERE and copy it to your SDCARD external + Gapps (ARM+ android 5.1 + nano).
- Go to DOWNLOAD MODE and flash TWRP. Boot in TWRP - Select Wipe - Advanced Wipe and wipe all (less usb-otg and external memory).
- Flash CM12.1 firmware and GApps then. Reboot and enjoy.
Use TWRP. Google for s4 twrp. On that page you will also have various install instructions. Afterwards you can flash pretty much any custom rom.
Well, tried exactly these steps, I only skipped gapps for now. I installed following version: cm-12.1-20151117-SNAPSHOT-YOG7DAO1JN-jfltexx. However the phone still hangs while booting... I will let it for a while and see if it boots, but I think it's still stuck... The stock Samsung Kitkat flashes properly from Odin and can be booted... Really strange. Is there anything I can do to see what's going on? I only get the Cyanogenmod Bootscreen, but no adb access...
Well, I am getting some errors: unable to mount /efs... This seems to be the problem, no idea why this is happening... I will keep looking around for a fix... I still don't quite understand why a stock KitKat works...
mschmiedel said:
Hi,
Yesterday I "blindly" installed the latest CM nightly without noticing that I was installing CM13... After the install, no Google App was working (as expected). When I noticed I had installed CM13, I tried downloading OpenGapps (all from nano to stock for ARM, -not ARM64-), and none of these can be installed, I always get an error (Status Code 1). After a lot of trying, I coundn't even make a wipe (I got an error while formatting data).
After flashing a stock ROM via Odin, the phone worked again, so I tried reinstalling. Now the issue I have is that I can't install any custom ROM to the phone, I have tried flashing CyanogenmodRecovery (for CM12 and CM13) and CWM 6.0.4.7, all of them let me install the latest CM12.2 nightly (26.12), but the phone always hangs on the Cyanogenmod Bootscreen. Wiping is not showing any errors anymore.
Any thoughts? Am I missing something? I am relatively new to the S4, and I got mine already with CM11 on it, and until yesterday I was always able to update without any issues... Am I missing some step?
Small update: I get some errors in the recovery logs: unable to mount /efs. I don't understand why I get this error when a OEM Kitkat works, but well, will keep trying, maybe I find a way to get it working...
Click to expand...
Click to collapse
Try dowloading the rom from a thread here on the forum.
You didn't mention what phone model you got so I assume it is a GT-I9505. You can find the official thread in the I9505 original android development section. The maintainer is AntaresOne.
It is the GT-I9505, I now was able to install a stock Kitkat, and it now is allowing me to update via OTA, (first time I got a message that I had a "changed" phone and OTA was disabled). I will let it install this way and see what happens.
Last time I tried with TWRP I was getting the error "unable to mount /efs", but after flashing an ODIN ROM the phone works, I have LTE Data and can place and receive calls, IMEI is there, so I am now confused about what can be wrong.
When this OTA update works, I will try to reflash TWRP via Odin (and not mess around with heimdall anymore), and see if then I can install CM12...
I downloaded the version from the Cyanogenmod site, the latest stable CM12.1 release, so I guess it should be as good as downloading it from an xda thread...
I don't know. It's worth a try.
If you get errors about efs,be careful.The EFS partition contains the most important stuff like your IMEI.There are some backup/restore tools of EFS, you should check them out.Wipe everything,flash cm,then restore EFS backup.
So I got my 6GB/64GB x720 yesterday. It had Google Play Store already installed (ordered it from HonorBuy) and asked me to install a 7MB OTA, so it seems it had a recent version of EUI on it. My idea was to put LineageOS 14.1 on it or if it wasn't stable enough for me, at least a debloated and rooted stock. So searched XDA and followed this HowTo. No Errors, flashboot oem device-info said, bootloader unlocked, perfekt. Installed TWRP, downloaded recent LineageOS and followed the guides to flash (wipe, ...). Unfortunately flashing never finished, I always had a full progress-bar and it stayed there without doing anything (ok, the device got hot). Thinking of a broken download, I redownloaded the ROM but same problem. So I started downloading other ROMs from XDA: Resurection Remix and OmniROM. Flashing-process went thru, but couldn't flash gapps and ROMs didn't boot at all. I was always only getting to the LeEco-Bootlogo with the chinese writings. So next thought was, maybe for some reason I can't install Lineage-based ROMs, let's figure out later and get a debloated stock ROM. So I downloaded MAURO V2.2_Free and gave it another try. Looked more promising, as the bootlogo was a little different, no more chinese writing but english. Unfortunately this was all I could see of MAURO as I only got a bootloop... so again reflashed MAURO and this time a single line in TWRP-output came to my eye "boot.img could not be written". I checked flashboot oem device-info after every flash and it always told me, bootloader is unlocked, but there seems to be something else that I'm missing that obviously still keeps the bootloader locked. I wiped the phone several times, even sdcard... nothing helped. The only method that worked for me to get a working rom running was by this guide, manualy flashing every bit of stock ROM with flashboot. With MAURO-ROM, I also tried to flash boot.img manually with flashboot, but that didn't work, either.
Anyone of you experienced the same? What am I missing? Or is this some new protection implemented by LeEco for the most recent devices? Any help really appreciated!
regards
CDFS
I have the same phone from Honorbuy, I flashed twrp using the tool by Mauronofrio and from the twrp wiped all and flashed the custom rom, all went ok, no errors at all! Glad to see you have solved anyway!
Thanks for the answer... no, it's not solved for me... still a lot of bloat on the phone I can't get rid of. Do you have a link for the tool you mentioned? Could be worth a try...
Hi! I've used this tool installing it on a Windows 7 64 system:
https://forum.xda-developers.com/le-pro3/development/tool-tool-one-mauronofrio-t3580611
Then turned ON the (original LeEco stock rom) usb debug option by the rom's developer options, then downloaded the LineageOS 14.1 by Team Superluminal in the phone's internal SD (the only SD it have!) + Arm64 nano Gapps, then with the tool gave a reboot in sideload mode. Then flashed the twrp recovery by the tool, restarted in recovery mode then executed a backup of ALL the "backupable" stuff (all the original rom and data and efs), then in wipe/advanced options I wiped dalvik, system, cache, data. Then in Advanced/file manager I wiped all the SD files with a dot ( . ) at the beginning of their names, then flashed the custom rom + gapps, reboot system, wait some minutes, done!
No luck with this tool, it doesn't even find my device. Any other ideas? I've read something for the x727, where they had to flash a 19s bootloader first, but I don't want to fiddle with flashing files that are not 100% meant for the x720...
CDFS
Solved! As I could install TWRP I just went the next step and installed SuperSU (rooted the phone) in order to at least debloat stock rom. During the installation of SuperSU I saw, that SuperSU obviously patches somehow the bootloader. After checking that SuperSU worked in the ROM, I was curious if this could be the missing part I was searching for. I tried to install a LineageOS-based ROM and BINGO! it just went straight through! From my previous phones I was used to just install TWRP, wipe anything and flash desired ROM. This seems to be different on this device... so the proper procedure to be able to flash any ROMs is: Install TWRP, root stock ROM, reboot so SuperSU is fully functional, then go back into TWRP, wipe, flash what you want.
CDFS
I hate to say it, but it's still not solved. After testing Resurrection Remix, I wanted to test turbos ROMs, so went to TWRP, wiped and flashed... and got the same behaviour as before, ROM not booting. Also installing SuperSU via TWRP again didn't help, so brought back the phone to stock 023S manualy with the guide by Presterin, installed TWRP again and also SuperSU. No Errors, but flashing a different ROM didn't worked. So for now I'm back to stock, rooted it and tried to debloat it by myself. The only difference between the successful flashing and the failed was the stock version: I had the 026S-update when I rooted the phone and successfuly could flash another ROM. My guess would be that LeEco changed something in the bootloader, but I have no chance to verify this. Anyone from the devs maybe who could look into this? If you need dumos, logs or anything like that, I would be happy to help.
CDFS
This seems unrelated to bootloader.
Anyway:
1. Make sure you got the latest firmware, if not sure:
1.1. Download latest OFFICIAL ROM
1.2. Rename the rom to a 'update.zip' and place it on phone's root directory.
1.3. Reboot to fastboot and flash STOCK RECOVERY
1.4. Reboot to recovery and flash, also check wipe data.
DO NOT FLASH STOCK ROM WITH TWRP! THIS WILL NOT WORK!
That's it, you should have the latest firmware now.
After booting to stock rom, reboot a few times is recommended.
2. Download latest OFFICIAL TWRP
2.1. Flash TWRP with fastboot.
2.2. Reboot to TWRP.
2.3. Download any custom rom of your choice.
2.4. Wipe.
2.5 Flash.
Done.
You can try to flash a stock, old rom using the "Qfil/FlashOne" way as suggested by Tryzex (read his thread and other related threads), then once you have got a stable, full working phone, you can (hopefully!) wait for a LeEco OTA automatic update that can "repair" the file system/partition structure (also bootloader I hope!).
Btw, to debloat it isn't necessary to root the phone, you can keep the phone unrooted & debloated using the file manager embedded in twrp recovery to delete/replace any file/app you want. I'm sorry I can't help you better, cheers and... good luck!
PS
I see now the post from Voron00, it's a good hint!
@voron00 thx for the steps described. I'm using the most recent, official TWRP (3.1.1). Latest Official Stock seems to be 023S on their site, even though there is a 026S update. However, I did this 026S-update and rooted again, but was to cusious if flashing would work now... so I tried flashing turbos MIUI... guess what? It worked. So for whatever reason I seem to have trouble when flashing from a 023S, but no problems when flashing from 026S. I don't quite understand why you think that my problem is not related to the bootloader? As mentioned in the OP, I could see in the logs that while flashing, some roms had thrown errors regarding writing the bootpartition.
CDFS
Seems as I found the culprit, somehow. At least I could flash two other ROMs without any problems. Obviously I mixed and partly missinterpreted some steps found in different threads and howtos. I had "rm -rf for formating" ticked all the time in TWRP. My flashing procedure is now as follows:
1. in TWRP settings check that "rm -rf instead of format" is NOT ticked
2. wipe Cache, System and Data
3. repair filesystem for Cache, System and Data and check that no errors occur
4. in TWRP settings tick "rm -rf instead of format"
5. flash ROM
6. wipe Dalvik
CDFS
"rm -rf" clears all the files and directories without formatting the partition. If your partition is damaged you need a real format to obtain a reliable partition (if the "disk" isn't faulty). Perhaps in your case a real format was required to solve the problem! I always used the real format and assumed other users even so. I see you finally solved the problem!