Database Info

[RESEARCH|MT8127] Bootloader hack ideas for LeapFrog Epic

I dunno, but I thought maybe I could make a separate thread about a possible way to poke into the LeapFrog Epic's preloader so it could accept unsigned images. LeapFrog won't spill the beans for us, as their staff (falsely) claims to know next to nothing about it, so unless we somehow managed to social-engineer them into giving us a signed ROM or an unlocked bootloader, our only chance is to patch it so it would ignore the lack of digital signatures.
What I've done so far is to run a strings check on the preloader and uboot binaries - fastboot seems watered down somehow as it lacked references to "oem unlock" and so on, but none of that Amazon Fire-style failsafe seems present from what I can tell.
Preloader: http://pastebin.com/H9QbzqC0
lk: http://pastebin.com/kSxRKYna
Boot files from the latest firmware revision are attached here, so if anyone is interested, please please please let me know so we can fix bricked units and finally port TWRP to this underrated kids' tablet.

blakegriplingph said:
I dunno, but I thought maybe I could make a separate thread about a possible way to poke into the LeapFrog Epic's preloader so it could accept unsigned images. LeapFrog won't spill the beans for us, as their staff (falsely) claims to know next to nothing about it, so unless we somehow managed to social-engineer them into giving us a signed ROM or an unlocked bootloader, our only chance is to patch it so it would ignore the lack of digital signatures.
Click to expand...
Click to collapse
Bumping the thread.
Would also like to know is this is possible
If I may ask, how did you extract the strings from preloader and lk? Did you use a hexeditor or there is another app?

Gibz97 said:
Bumping the thread.
Would also like to know is this is possible
If I may ask, how did you extract the strings from preloader and lk? Did you use a hexeditor or there is another app?
Click to expand...
Click to collapse
I used this utility to do a strings dump off an Epic ROM:
http://split-code.com/strings2.html
It did turn up some interesting stuff but I was wondering if a binwalk or perhaps an IDA disassembly analysis would do wonders so we can finally poke into this tablet.

blakegriplingph said:
I used this utility to do a strings dump off an Epic ROM:
http://split-code.com/strings2.html
It did turn up some interesting stuff but I was wondering if a binwalk or perhaps an IDA disassembly analysis would do wonders so we can finally poke into this tablet.
Click to expand...
Click to collapse
Thanks for the tool but I cannot seem find a way to use it.
 @gursewak.10 or @smartmanvartan please chime in to help us because they were able to hack the preloader of k4 note and lk of RCA Viking Pro respectively

I also know a friend who is willing to donate a spare Epic, if that helps.
As for using Strings2, the following batch script should work:
Code:
@echo off
strings2 %1 > test.txt
pause
Just drag a binary to be analysed into the batch file, and a resulting text file with strings and stuff should be generated.

Hello friend
You need to tweak lk to unlock bootloader . i am giving you my phone's both files(.you can easily compare them.
on unlocked bootloader u can flash unsigned images via write memory option of SP flash tool .
Try HxD hex editor

gursewak.10 said:
Hello friend
You need to tweak lk to unlock bootloader . i am giving you my phone's both files(.you can easily compare them.
on unlocked bootloader u can flash unsigned images via write memory option of SP flash tool .
Try HxD hex editor
Click to expand...
Click to collapse
Hmm, I can flash the preloader to my leapfrog via SPFT, but not anything else. Write memory works, and I can flash stuff one at a time to it, but I couldn't get the tablet to force itself out of flash/download mode and into normal mode. There's no reset button, and not even taking the battery off does the trick.

However, on my working Epic, I can alter the demo system image, flash it back using Write Memory and still end up with a working device, just as long as the preloader isn't messed with in any way. Right now I am at a loss as to how to revive my other Epic, short of taking it apart and shorting KCOLO and GND. It also didn't help that the testpoints aren't labeled at all. :/
Also, I did a quick logcat while running the FOTA utility, and I managed to get a few URLs off the said logs. Problem is that while the ZIPs may be of some use, they're incremental and there doesn't seem to be a full scatter/zip image to restore a faulty unit. There definitely needs to be a way to patch the bootloader so we can do whatever we want to it, but is there any one of you guys who are experts when it comes to MTK modding?

Any more ideas?

Anyone, please?

Bumping in case there's anyone interested in poking into this.

Now this is interesting let us see what we can do.

Warrior1988 said:
Now this is interesting let us see what we can do.
Click to expand...
Click to collapse
You happen to have an Epic with you? Please let me know if you need more than just the firmware images. I've tried contacting LeapFrog regarding this issue to no avail. They did give my friend and I the kernel sources, but it's no use as the bootloader has to be unlocked for custom boot or recovery images to be used.

Is anyone willing to test if SP Flash Tool 5.1532.00 works on the Epic? I managed to flash a complete system image to a bricked Epic but I was unable to revive it as it has been bricked prior due to a botched preloader flash. The ROM's on my main Epic discussion thread, but one should take note to flash just the boot, recovery and system images and see if the device still works.

im also poking around in this since my volume up button doesnt work in bootloader mode
i have a figo gravity x55l
i can also upload the stock rom files that can be checked if needed

SP6RK said:
im also poking around in this since my volume up button doesnt work in bootloader mode
i have a figo gravity x55l
i can also upload the stock rom files that can be checked if needed
Click to expand...
Click to collapse
Are you able to muck around with LK or sbchk using IDA Pro or some other tool? Makes me wonder if merely deleting /system/bin/sbchk would disable boot-time checks or if there's more to it than just that.

blakegriplingph said:
Are you able to muck around with LK or sbchk using IDA Pro or some other tool? Makes me wonder if merely deleting /system/bin/sbchk would disable boot-time checks or if there's more to it than just that.
Click to expand...
Click to collapse
well i tried hex editors but lk.bin isnt decoded for my rom so half of my lk file is not showing me anything exept weird characters but i can see some of the other half.
if you delete the file...will it brick?...will it even boot?

GREAT NEWS I MANAGED TO GET ROOT WITHOUT UNLOCKING THE BOOTLOADER ALL YOU NEED IS TO
1.download your firmware and extract it
2.extract the boot.img from the firmware and put it on your phone REMEMBER WHERE YOU PUT IT SINCE YOU WILL NEED THIS!
3download magiskmanager install it and open it.
4click install and choose the boot.img it will install magisk into it
5.put it back in your firmware folder on your pc
6 look for a file that says Checksum_gen and run it
7 once that completes use spflash tool and load your scatterfile and flash JUST THE BOOT.IMG wait for the reboot and you have root!
THANK YOU DEVELOPERS OF MAGISKMANAGER!

SP6RK said:
GREAT NEWS I MANAGED TO GET ROOT WITHOUT UNLOCKING THE BOOTLOADER ALL YOU NEED IS TO
1.download your firmware and extract it
2.extract the boot.img from the firmware and put it on your phone REMEMBER WHERE YOU PUT IT SINCE YOU WILL NEED THIS!
3download magiskmanager install it and open it.
4click install and choose the boot.img it will install magisk into it
5.put it back in your firmware folder on your pc
6 look for a file that says Checksum_gen and run it
7 once that completes use spflash tool and load your scatterfile and flash JUST THE BOOT.IMG wait for the reboot and you have root!
THANK YOU DEVELOPERS OF MAGISKMANAGER!
Click to expand...
Click to collapse
What device are you referring to? Is this for an MT8127 tablet?

blakegriplingph said:
What device are you referring to? Is this for an MT8127 tablet?
Click to expand...
Click to collapse
i have a figo gravity x55l ? and it is not a tablet
it is a mt6753 great phone btw!
im a starting developer and got this phone so i can learn from my mistakes of course?
but this should work on any device that you can get a hold of its boot.img from its firmware

[ROM] ZTE Visible R2 Stock firmware

Here is the stock firmware including the firehose needed to flash it
B10 Firmware
Here
B12 Firmware
Here
ZPI file for ZTE SalesMultiDL tool
Here
Here is a step by step guide on how to flash the stock rom with QFIL and by extension any image.
Download and install the Qualcomm drivers from here
Download the firmware from above
Extract the firmware to a folder that you can easily access them from like your desktop
Download and install QPST from here
Open the QFIL application (Find it in your start menu)
In the "Select Build Type" field select Flat Build
In the "Select Programmer" field navigate to the folder you extracted the firmware and support files to and select the prog_emmc_firehose_8917.mbn file
Select the "Load XML" button and navigate to the folder you extracted the firmware and support files to and select the rawprogram0.xml and then the patch0.xml when prompted.
Plug in your tablet
Run the following adb command "adb reboot edl" (Now the screen should be blank but the led light should be red)
If the text at the top of the QFIL application says "No Port Available" click the "Select Port..." option and pick your device. If your device isn't showing up there you didn't install the drivers properly.
Click the Download Button to begin flashing your device

Here is the Stock wallpapers in case anyone wants them
https://www.androidfilehost.com/?fid=1395089523397903558

I just got this device a couple days ago and was hoping I could use PDANet/Foxfi to connect more than one device at a time to wifi hotspot but they've evidently blocked the apps.. Do you have any insight to that?

pegb856 said:
I just got this device a couple days ago and was hoping I could use PDANet/Foxfi to connect more than one device at a time to wifi hotspot but they've evidently blocked the apps.. Do you have any insight to that?
Click to expand...
Click to collapse
I don't own this device sadly just grabbed the firmware for a friend of mine and posted it here in case anyone in the future wants it.

deadman96385 said:
I don't own this device sadly just grabbed the firmware for a friend of mine and posted it here in case anyone in the future wants it.
Click to expand...
Click to collapse
Ok thank you for the reply.

deadman96385 said:
I don't own this device sadly just grabbed the firmware for a friend of mine and posted it here in case anyone in the future wants it.
Click to expand...
Click to collapse
If you WANT to own this device it's currently $19 out the door on visible.com. No Trade required.
https://slickdeals.net/f/13221781-visible-r2-is-now-19-without-service-or-trade-in-requred

I'm gonna see if I can flash Chinese firmware to unlock the bands

Bowsa2511 said:
I'm gonna see if I can flash Chinese firmware to unlock the bands
Click to expand...
Click to collapse
Good Luck finding the A0722 firmware (that's the model androidpolice thinks this is a renamed version of).

famewolf said:
Good Luck finding the A0722 firmware (that's the model androidpolice thinks this is a renamed version of).
Click to expand...
Click to collapse
https://imgur.com/yOe0vIx

Your elite google-fu obviously exceeded my own. Please make that sharable if you can....megaupload.nz would hold it and is free.

famewolf said:
Your elite google-fu obviously exceeded my own. Please make that sharable if you can....megaupload.nz would hold it and is free.
Click to expand...
Click to collapse
https://mega.nz/#!aRo0CaBA!nm37c3V11tr2260V23wIxb4yZufD5-_f6gID8i3HjSY
Let me know if it's helpful

DISREGARD. Looks like out of date info.

Any of you able to get fastboot working on it? ADB works, but my fastboot doesn't detect the phone.

Nice looking out, just ordered one.

Using one of the hidden activities app from the play store. There is an option to change from LTE to 2G/3G/4G under one of the phone settings. But calling still did not work with either AT&T or T-Mobile.

famewolf said:
Good Luck finding the A0722 firmware (that's the model androidpolice thinks this is a renamed version of).
Click to expand...
Click to collapse
Just a heads-up: even if you found the files for the A0722, you'd brick your R2 if you managed to flash them. The chassis and screen seem to be the same, but they're completely different specs-wise. Given that the A0722 has a different SoC and an eMMC chip 2-4x larger, I doubt you'd get real far in the flashing process in the first place.

FEGuy said:
Just a heads-up: even if you found the files for the A0722, you'd brick your R2 if you managed to flash them. The chassis and screen seem to be the same, but they're completely different specs-wise. Given that the A0722 has a different SoC and an eMMC chip 2-4x larger, I doubt you'd get real far in the flashing process in the first place.
Click to expand...
Click to collapse
In my case my main goal was to use it and the factory software to learn about mbn files. I've dealt with LG's TOT and KDZ files but not the mbn's. Thanks for giving folks the warning though.

Would it be possible for someone to grab the download URL for whatever OTA update is available for the device? I don't think it's anything major but I'd like to poke around at it; the firmware uploaded here seems to be from launch.

FEGuy said:
Would it be possible for someone to grab the download URL for whatever OTA update is available for the device? I don't think it's anything major but I'd like to poke around at it; the firmware uploaded here seems to be from launch.
Click to expand...
Click to collapse
I've got a logcat recorder queued up to be installed and will try to grab an url by starting the download. If that fails there are a couple of alternatives....someone who has DONE the upgrade could rip the rom and make it available if @deadman96385 can point to some instructions on how to rip the rom.
Also you can always let your own upgrade occur because he's already provided the original software and QFIL which would let you restore to original factory and get the update again.
As a last resort I can grab the log from my ROUTER that the phone is connected to and try to get the url that way which I've had to do with SOME devices.

I'll probably end up taking the OTA again anyways as I've been messing around with the firmware from the first post. Honestly, I'd really recommend staying away from flashing it without a good reason. Even when the flasher works, either the logging and/or the flasher hangs and it's close to impossible to tell which without unplugging your phone. If a partial flash leaves you in a state where you can't get to ADB to boot to EDL mode, you'll have to boot into diagnostics mode, use a piece of Chinese software to boot from there back to EDL, and within five seconds or so, close that software and start the flashing process from QFIL before the com port stops responding to requests, leaving you to reboot the phone and start again.
I've been trying to get non-LTE networks and calling working, but it's entirely impossible to tell whether my tweaks are having unintended side effects or if the flashing just crapped out partway through, even when I'm just flashing single partitions.

Successfully Flashed BNTV450 Stock Rom on BNTV460 Nook 7 (2018) Tablet

Greetings my tech peoples.
Just wanted to let everybody know I successfully flashed a BNTV450 Stock Rom on a BNTV460 Tablet. As I said in a previous post, I bricked the little guy trying to get root (it got stuck in a bootloop after I patched Magisk to the boot-sign img and then flashed it) so I thought, why not be creative and see what you can do with the little guy.
Now there are problems. A **** ton of problems. It isn't what I would call functional. Screen keeps going Red on the borders and flickering. Start thing crashed. But I can get in and finagle to developer options and such. Flashboot and ADB still working though. Keep in mind I flashed with SP Tool via scatter file.
But hey - it can be done!!!!
Also, just for note, I've also been able to flash a boot img of the 450 over an installation of the 460 stock rom - did that unlocking the device. Honestly, that caused less problems but I wasn't able to get root. Also, it naturally erased my unlocking but fret not, I've unlocked the thing 3 times in the 12 hours I've had it.
This is my first nook device, and my first timed dealing with new android, Oreo. But I just wanted to give the hope out there.
Hopefully better news in the coming days.

You wouldn't want to share your scatter file and your stock firmware would you? Trying to recover a 450 that won't boot past Nook screen. I cannot unlock it because the volume key does not respond. I have been able to flash 1.02, 2.04, and 2.05 boot and recovery images from ipdev's thread with no change. Also got a 1.02 system.img from him but that did not seem to fix it either. I do not have adb access at this moment either so cannot logcat.

toasterboy1 said:
You wouldn't want to share your scatter file and your stock firmware would you? Trying to recover a 450 that won't boot past Nook screen. I cannot unlock it because the volume key does not respond. I have been able to flash 1.02, 2.04, and 2.05 boot and recovery images from ipdev's thread with no change. Also got a 1.02 system.img from him but that did not seem to fix it either. I do not have adb access at this moment either so cannot logcat.
Click to expand...
Click to collapse
This is the 450 firmware I used:https://mega.nz/#!Ds5lTCRD!MT8za1cUYOfEkSXGZB57gIsWr12ogWs9YotDoHZLwQ4
Scatterfile is in there. Keep in mind I got it from an unverified source - use at your own risk just in case it has that piece of software in the OS that B&N knew about which you can read about here: https://techcrunch.com/2016/12/22/the-new-barnesnoble-nooks-come-with-free-malware/

Articul8Madness said:
This is the 450 firmware I used: blob:https://mega.nz/f22bf6cb-5617-4e8d-9bea-5126793db71d
Scatterfile is in there. Keep in mind I got it from an unverified source - use at your own risk just in case it has that piece of software in the OS that B&N knew about which you can read about here: https://techcrunch.com/2016/12/22/the-new-barnesnoble-nooks-come-with-free-malware/
Click to expand...
Click to collapse
The link just defaults to the mega home page for me. Am I missing something?

toasterboy1 said:
The link just defaults to the mega home page for me. Am I missing something?
Click to expand...
Click to collapse
Sorry bro, it kept redirecting weirdly. I reposted the link in the previous post and it should work.
Here is also the site I got it from: https://www.xsfirmware.com/nook-bntv450-mt8163-android-6-0-firmware-flash-files/

Back up and running. Thank you.

toasterboy1 said:
Back up and running. Thank you.
Click to expand...
Click to collapse
No prob dude.

If spflash tool is working, but you have not a correct scatter file. You can use "Wwr_MTK tool" to read back the whole emmc and read partition table from preloader, the tool will make scatter file and full image copies of the firmware partition by partition

I did this, but now I can't log into the B&N account, and if I try to open nook settings, it asks me to log in, and again, it doesn't let me...

Hardbricked Pixel

Had a hardbrick happen on my Google Pixel yesterday; I was typing a message and the phone rebooted, started normally, then within a minute it did it again and then 1 more time and it never turned back on. Connecting it to a PC, it shows up as infamous QUSB_BULK. Does anyone have or have knowledge of the eMMC files and software required in order to reflash the bootloader or whatever is required to be able to flash Android back onto it?
Any help is much appreciated!

Death I said:
Had a hardbrick happen on my Google Pixel yesterday; I was typing a message and the phone rebooted, started normally, then within a minute it did it again and then 1 more time and it never turned back on. Connecting it to a PC, it shows up as infamous QUSB_BULK. Does anyone have or have knowledge of the eMMC files and software required in order to reflash the bootloader or whatever is required to be able to flash Android back onto it?
Any help is much appreciated!
Click to expand...
Click to collapse
I think it is possible with qfil flash tool. The problem is getting the right files.

I have the software, but not the files required unfortunately. They don't seem to exist on the open web.

Death I said:
I have the software, but not the files required unfortunately. They don't seem to exist on the open web.
Click to expand...
Click to collapse
I have spent hours looking for the right files to unbrick a Qualcomm phone. Found most but not all.

SnowFuhrer said:
I have spent hours looking for the right files to unbrick a Qualcomm phone. Found most but not all.
Click to expand...
Click to collapse
Yes, but they are different for each Qualcomm phone. I found a big stash of random ones but I searched for a few days and can't find files for Google Pixel...
I suspect it might be a failed flash IC but I cannot confirm without trying to flash it.

Death I said:
Yes, but they are different for each Qualcomm phone. I found a big stash of random ones but I searched for a few days and can't find files for Google Pixel...
I suspect it might be a failed flash IC but I cannot confirm without trying to flash it.
Click to expand...
Click to collapse
I know, that's the problem. I have thought about getting an octoplus box....

And this device has files to flash them?

The struggle... (64 bit recovery porting)

I've got the Oukitel WP16 which a 64 bit and has an octa-core MediaTek Helio P60 MT6771V on Android 11. Actually a pretty decent rugged phone. Originally tried to root it through fastboot and bricked it about 2 weeks after getting it. For the life of me, I couldn't bring it back to life. Finally after 4 months of it just sitting in a drawer, I went about flashing it to bring it back to life a little differently than I was before and it stuck. Very thankful that it was working again because in those months I had destroyed 3 of your average break if you touch them phones. However me being me, getting it going again wasn't enough. So I gave rooting it a try again. Got it! Rooted with Magisk. Now because I have one of those devices I believe is under rated and under developed, I can't find any kind of development done on it whatsoever and want to build/port TWRP so I'm able to try a GSI ROM. My problem is that every tutorial I read or watch has nothing like what is my stock ROM. Either names of files are different or I find the files in other folders, I've got more folders than what I'm trying to port, and, I would need to double check again, but I wanna say that I've even found them in different partitions. So my question is, what do I do? Like fstab is not in the recovery but in something else. That something else that has fstab in it, my port doesn't have that folder at all. And there are others like that. I've tried several, I repeat SEVERAL different tutorials and cannot figure out what to do. I know it's beyond the capabilities of the tool, but I even tried one of those Hovatek port tools. Obviously didn't work because of the kernel. So to say I'm lost is an understatement. This isn't the first phone I've tried this with. Had another 64 bit with the same chipset that actually had a unofficial TWRP built for it. But when it came to try to port a ROM, I was left with files in different folders and things that weren't in the ROM i was trying to port. I eventually just have up because I kind of had to since scuba diving with the phone here in the Mexican Caribbean finally took it's toll on the phones external hardware. But yeah, back to my only question. What do I do in this situation? I'm mainly concerned about it because this WP16 has a night vision camera on it which I use quite often and don't want to lose that. Recovery has nothing to do with the camera but the ROM I'd like to port will. So figuring out what to do with the recovery could eventually lead me to my answer with the ROM. Anyway, kind of a long winded explanation just to get to what may seem like a simple question to some. Any help would be greatly appreciated.

finnroth69 said:
I've got the Oukitel WP16 which a 64 bit and has an octa-core MediaTek Helio P60 MT6771V on Android 11. Actually a pretty decent rugged phone. Originally tried to root it through fastboot and bricked it about 2 weeks after getting it. For the life of me, I couldn't bring it back to life. Finally after 4 months of it just sitting in a drawer, I went about flashing it to bring it back to life a little differently than I was before and it stuck. Very thankful that it was working again because in those months I had destroyed 3 of your average break if you touch them phones. However me being me, getting it going again wasn't enough. So I gave rooting it a try again. Got it! Rooted with Magisk. Now because I have one of those devices I believe is under rated and under developed, I can't find any kind of development done on it whatsoever and want to build/port TWRP so I'm able to try a GSI ROM. My problem is that every tutorial I read or watch has nothing like what is my stock ROM. Either names of files are different or I find the files in other folders, I've got more folders than what I'm trying to port, and, I would need to double check again, but I wanna say that I've even found them in different partitions. So my question is, what do I do? Like fstab is not in the recovery but in something else. That something else that has fstab in it, my port doesn't have that folder at all. And there are others like that. I've tried several, I repeat SEVERAL different tutorials and cannot figure out what to do. I know it's beyond the capabilities of the tool, but I even tried one of those Hovatek port tools. Obviously didn't work because of the kernel. So to say I'm lost is an understatement. This isn't the first phone I've tried this with. Had another 64 bit with the same chipset that actually had a unofficial TWRP built for it. But when it came to try to port a ROM, I was left with files in different folders and things that weren't in the ROM i was trying to port. I eventually just have up because I kind of had to since scuba diving with the phone here in the Mexican Caribbean finally took it's toll on the phones external hardware. But yeah, back to my only question. What do I do in this situation? I'm mainly concerned about it because this WP16 has a night vision camera on it which I use quite often and don't want to lose that. Recovery has nothing to do with the camera but the ROM I'd like to port will. So figuring out what to do with the recovery could eventually lead me to my answer with the ROM. Anyway, kind of a long winded explanation just to get to what may seem like a simple question to some. Any help would be greatly appreciated.
Click to expand...
Click to collapse
Your device already have TWRP [Firmware version: OUKITEL_WP16_RU_V04_20220621 ] but you not need Custom Recovery for install GSI. Use stock recovery.
About GSI with a night vision camera support so is much expensive solving that. You can try but need very experience and patience of the tests and solutions.

lopestom said:
Seriously? Thank you! I'm guessing the link is gonna be in 4pda being that it's Russian? I've spent a month searching and haven't found anything whatsoever. And since I don't read Russian, I always overlook 4pda even though it's been a great resource in the past. And yes, I'm aware you don't "need" custom recovery for GSI's. It does make things a little easier for me though.
Click to expand...
Click to collapse

The recovery issue will be solved since there is a recovery out there. That still doesn't solve the mystery and problem i have of files being in different places though. In that case what do I do if the files isn't in the same place in the port as it is in the stock, or the other way around? Add the stock file to the same folder it is in for the port? Or should I make a new folder in the port that's name is the same as in the stock? If neither, what do I do?

finnroth69 said:
Seriously? Thank you! I'm guessing the link is gonna be in 4pda being that it's Russian? I've spent a month searching and haven't found anything whatsoever. And since I don't read Russian, I always overlook 4pda even though it's been a great resource in the past. And yes, I'm aware you don't "need" custom recovery for GSI's. It does make things a little easier for me though.
Click to expand...
Click to collapse
No! Search my repository in the github in the release option.
finnroth69 said:
The recovery issue will be solved since there is a recovery out there. That still doesn't solve the mystery and problem i have of files being in different places though. In that case what do I do if the files isn't in the same place in the port as it is in the stock, or the other way around? Add the stock file to the same folder it is in for the port? Or should I make a new folder in the port that's name is the same as in the stock? If neither, what do I do?
Click to expand...
Click to collapse
As I wrote before, it is very difficult to solve issues like the original stock ROM camera. There are even one or two people who managed to get this to work.
Now what you don't understand: If you want a Custom ROM, use GSI and adapt, solve, analyze and test by changing some stock ROM files in GSI. You must understand that you need experience and time. You can even compile a Custom ROM - any GSI - specifically for your device. So you just need to have the source code of your device, have the GSI source code and know how to compile the file so that you can do the tests. Again, you must understand that you need experience and time.
If you haven't researched what is GSI and still think that Custom ROMs portability that happened before until Android 7.1 then look, read and update yourself.
In your questions, be as detailed as possible. You write a lot of parts and you scramble the words.
As for having GSI normally I already wrote where there is an instruction to install and you follow. As for TWRP, look it up on my github.
As for solving something in the GSI, if you managed to install it and still used the phh options to try to fix any bad part, then it is only you who will be able to solve any error/adaptation/bug/extra installations that there.

Trust me when I say I understand what you're saying. I have done some testing I have watched tutorials, I have studied. but everything that I have seen is basically switching a file from a folder on the stock ROM to a folder in the ported ROM with the same name as what's in the stock ROM, and possibly adding a little script to something. What I'm trying to figure out is what I asked. Fstab is not in recovery on my phone's stock ROM. It is in something else. But fstab is in and a part of recovery for TWRP. So even though there might be a TWRP for my phone doesn't help me to know if I should be creating that same folder that's in my stock ROM in the ported one for fstab or other files that are like it. I have downloaded the TWRP from your profile and I've gone to the 4pda and discovered that you're the dev who ported it with and without encryption. Nice work and thank you! I would like to move beyond being a flash baby though. So I'm simply trying asking that one specific question to help me learn because it is something I am lost on. Whether it is to port recovery, port a ROM, or whatever, I don't know what to do when the location of the files I need to port from the stock aren't matching with the with the location of the files in the port itself. Fstab is just one example. I'm gonna send you a friend request. Later when I fire up my laptop, I'll take screenshots to physically show you exactly what I mean. Please be patient and don't get upset at me for trying to learn. As well as please take your time in responding. It's no rush since I've got a business to run and this is something I'm trying to teach myself on the side. It really is something I'm lost on, and if I'm lost on it, how many others has it confused as well?

As for the camera app issue. We can forget I asked that also. I understand completely what you're saying about it being far beyond my reach right now. Thank you for the heads up on that.

Mr. Lopestom can you please help me with your recovery images? I cannot seem to get any of them to boot. I've tried the with script found on 4pda, without that script, I've tried flashing an empty vbmeta, but nothing is getting the images to boot. See attachment for script I'm talking about. Attachment only shows me running it, but I have tried without.

What sense does it make to flash an empty VBMETA ? You typically pull the existing VBMETA and pass this file to Fastboot what rewrites 2 bytes in that file.

finnroth69 said:
Mr. Lopestom can you please help me with your recovery images? I cannot seem to get any of them to boot. I've tried the with script found on 4pda, without that script, I've tried flashing an empty vbmeta, but nothing is getting the images to boot. See attachment for script I'm talking about. Attachment only shows me running it, but I have tried without.
Click to expand...
Click to collapse
The problem is not in the vbmeta file. You can use this one if you can: Post in thread 'Looking for a walkthrough on installing a custom ROM on a BLU G90 PRO' https://forum.xda-developers.com/t/...om-rom-on-a-blu-g90-pro.4253737/post-85180967
The big fact is that the company put a recovery.img stock file inside /vendor/etc/ and you should know how to deal with it. So only removing this recovery.img and repacking modified vendor.img made by u; install that in your device so you can have TWRP.

jwoegerbauer said:
What sense does it make to flash an empty VBMETA ? You typically pull the existing VBMETA and pass this file to Fastboot what rewrites 2 bytes in that file.
Click to expand...
Click to collapse
I'm not sure to be honest with you. Like I told lopestom, I'm just trying to teach myself as I can in my free time. A lot of what I do is imitate what I see or read. While reading post about flashing twrp i had read something about flashing an empty vbmeta file.