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STATUS_PRELOADER_INVALID error

STATUS_PRELOADER_INVALID error

neiviv-ui
neiviv-ui
neiviv-ui
Enthusiastic Member
5
12-05-2021, 10:47 PM
#1



Hi,
I'm trying to dump recovery.img and boot.img from my Wiko View 4 (MT6762V/WD) with SP flash tool, like in this tutorial :
https://www.hovatek.com/forum/thread-526.html
but I am getting "STATUS_PRELOADER_INVALID" error, and I have no clue why. BTW I have tried on both linux and windows.
I attach a screen and the scatter file (which I got here : https://www.hovatek.com/forum/thread-12724.html , couldn't make it myself with MTK Droid Tools).
I'm asking for help.
Thanks in advance
Attached Files
.png
error.png
Size: 71.41 KB / Downloads: 4
.txt
MT6765_Android_scatter.txt
Size: 16.42 KB / Downloads: 7
X3non
X3non
X3non
Recognized Contributor
22,062
13-05-2021, 10:35 AM
#2
(12-05-2021, 10:47 PM)neiviv-ui Hi,
I'm trying to dump recovery.img and boot.img from my Wiko View 4 (MT6762V/WD) with SP flash tool, like in this tutorial :
https://www.hovatek.com/forum/thread-526.html
but I am getting "STATUS_PRELOADER_INVALID" error, and I have no clue why. BTW I have tried on both linux and windows.

you'll need an existing preloader for this same model to make a backup ; refer to https://www.hovatek.com/forum/thread-439.html


(12-05-2021, 10:47 PM)neiviv-ui I attach a screen and the scatter file (which I got here : https://www.hovatek.com/forum/thread-12724.html , couldn't make it myself with MTK Droid Tools).
...

you shouldn't be using a random scatter file, if you need to backup the follow the guide @ https://www.hovatek.com/forum/thread-21970.html
without an exisiting preloader for view 4, you would be unable to proceed with a backup using SP flash tool. you can try this test files @ https://www.androidfilehost.com/?fid=218...9693801849 (it includes da, auth and preloader)

alternatively, you could try backup using any hardware box / dongle tool you might have, if you have none then you could try miracle thunder v2.82 @ https://www.hovatek.com/forum/thread-13347.html ; see if that works for you
This post was last modified: 13-05-2021, 10:56 AM by X3non.
neiviv-ui
neiviv-ui
neiviv-ui
Enthusiastic Member
5
13-05-2021, 04:30 PM
#3
(13-05-2021, 10:35 AM)X3non you shouldn't be using a random scatter file, if you need to backup the follow the guide @ https://www.hovatek.com/forum/thread-21970.html
without an exisiting preloader for view 4, you would be unable to proceed with a backup using SP flash tool. you can try this test files @ https://www.androidfilehost.com/?fid=218...9693801849 (it includes da, auth and preloader)

alternatively, you could try backup using any hardware box / dongle tool you might have, if you have none then you could try miracle thunder v2.82 @ https://www.hovatek.com/forum/thread-13347.html ; see if that works for you

Thanks for your quick response.
Following your message, I'm trying to backup through miracle thunder v2.82, but unfortunately it looks like it doesn't work and for some reasons I haven't the driver anymore, I'm in the same situation as in this thread : https://www.hovatek.com/forum/thread-13347.html, because there isn't win10 folder. I don't know if I can use win7 one, I want to know what is your thinking, so for now on I won't do anything.
neiviv-ui
neiviv-ui
neiviv-ui
Enthusiastic Member
5
14-05-2021, 02:16 PM
#4
I haven't tried again with miracle box, but I got some pretty interesting informations from fastboot (with `fastboot getvar all`), from which I have made a csv file I will link. From what I have seen, a really interesting thing is the block size, "logical-block-size : 0x200", and "erase-block-size : 0x80000". For me, the scatter's block size refer to the logical one, and is totally wrong, because in all the scatter file I have used in SP Flash Tool, it was equal to 0x20000, not 0x200 or even 0x80000.
Another thing is the partition size, for example the default preloader size (in a scatter file created with WwR_MTK) is 0x80000, whereas it seems to be 0x40000 on my phone. The scatter file I had downloaded had the right preloader size, but block-size was still wrong (0x20000).

I am going to try on Linux (no need of driver) with a modified sample scatter file generated with WwR_MTK.

If you know a interesting thing about the attachment, I would be happy to hear it ;-).

PS : I can't send .csv file, so I renamed it.
Attached Files
.txt
fastboot_getvar_all.csv.txt
Size: 3.16 KB / Downloads: 3
X3non
X3non
X3non
Recognized Contributor
22,062
14-05-2021, 02:42 PM
#5



(13-05-2021, 04:30 PM)neiviv-ui Thanks for your quick response.
Following your message, I'm trying to backup through miracle thunder v2.82, but unfortunately it looks like it doesn't work and for some reasons I haven't the driver anymore, I'm in the same situation as in this thread : https://www.hovatek.com/forum/thread-13347.html, because there isn't win10 folder. I don't know if I can use win7 one, I want to know what is your thinking, so for now on I won't do anything.

not sure what you mean by win10 folder but you're to insert the da and auth file into miracle thunder before proceeding with the backup instructions ; see https://www.hovatek.com/forum/thread-23733.html
or better still, explain properly where you got stuck
neiviv-ui
neiviv-ui
neiviv-ui
Enthusiastic Member
5
16-05-2021, 02:53 PM
#6
Thanks for the explanation, but sadly I didn't managed to make it work.
Actually this week I'm a bit busy, so I'm gonna pause for now on, and go back on next week to explain my problem.
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