Trying to compile info on what roms are compatible with what EFS, and what EFS revisions exist, so that avoiding a damaged EFS can be achieved. I figure making a database of known issues with stock and popular custom roms intermingling would help avoid more EFS threads.
Related
I'm new to the root world, and am using my backup pro. I've read a number of posts scattered across various discussions about some of the challenges that can arise from restoring poorly after flashing a new ROM, but can't find a complete, concise list of do's and don'ts. I've just experimented once, with very mixed results... plenty of apps that don't work after restore andbseveral other quirks. I did not restore system files... and I did do a full wipe before rflashing.
Can anyone point me to a good reference thread or guide, or if indeed none exist can any of you offer advice and guidance from your experience?
Thanks in advance.
How can I solve a IME problem without EFS backup
I've been reading some tutorials on how to create / modify IMEI of the phone.
I did some things without success:
- Install the original ROM cell.
- Install Other ROMs.
What I can not do alone:
- Using EFS Profisional to change the IMEI.
I've seen the IMEI concert here in Brazil is R $ 500,00.
[Please, I need help because i do not have the backup of EFS.]
Hi Friends,
we are an association and we want to distribute smartphone with LineageOS to our associates,
for this we want to install and configure one device ( LineageOS+apps+configurations) and then replicate its TWRP image on other identical devices.
Is there a probability of losing the IMEI phone?
Many thanks!
Davide
Hi,
I bought an IMEI changed Samsung Galaxy Note 9. Its rooted using Magisk, I m not a familiar with android ROM installations.
I want to upgrade android version from currently running 9 to android 10. But I dont want to loose the Changed IMEI.
What will happen if I flash official android 10 ROM onto my device, will the IMEI be changed to the factory one?
Thanks
Backup /EFS partition before changing ROM.
FYI:
EFS stands for Encrypted File System. Imagine the EFS as a big folder containing all of the important stuff that makes the "phone" part of your phone (i.e. what lets you communicate from one person with a phone to another) tick. It contains your IMEI, lots of files revolving around your SIM card and Wifi/Bluetooth (this includes your MAC address for all the radios of your phone), and lots of other things that should never ever under any circumstance be deleted or touched. It's sensitive, it's devastatingly important, and it's a huge pain. If you lose your EFS folder, you lose pretty much any chance of your phone being able to use data, Wifi, Bluetooth, and ( probaby) your phone will just not want to respond and reboot quite a lot.
Hi all,
Just wanted to give a background story as to why I formatted the Flash by accident on my device. I received the phone not too long ago and was excited to venture into the possibilities of testing and trying out different images. Unfortunately without backing up the device I kind of jump the gun and formatted the drive after I ran into some issues thinking I could restore it with the Stock ROM files. To my horror I found out that not all ROMs were included when reimaging the Stock Roms.
So, here I am. The device is working ok, but these are the issues I'm facing below:
- Partially lost of cellular signals - (Flashing "Modem.bin could resolve this, but don't know where to flash it or what folder structure)
- Wifi working inconsistently - (Stock Roms, does include a "Modem_bin" folder with the files, but again don't know where to flash it)
- Don't have all the calibrations files (Maybe I do, but don't have the correct partition or where it would be placed)
- The Databases were also included, but again don't know where to flash it
- Lost IMEI/BaseBand - (Fixed by flashing IMEI numbers through SN Writer Tool)
- Lost Google Device certification - (Fixed by flashing Attestation files with SN writer tool)
Few things I need help with:
- Does anyone have the full structure of their Doogee V20 phone that does not mind pointing me in the right direction of where to flash the Modem.bin files to?
- Also, if IMEI and SN is corrected, does it means now that the NvRam and NvData info is all there or partially there?
Thanks in advance and hope my insights or issues helps other to avoid my mistakes.
I have attached the scatter files and stock roms if you have any way of extracting what I need from them I would highly appreciated it.
Scatter files : attached
Stock rom : Here