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Go Back   GSM-Forum > Product Support Sections > Special Solutions / Services / WebShop > GPGIndustries Support section > Distributed Devices by GPG > GCPro Key

 
 
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Old 07-10-2019, 22:18   #1 (permalink)
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Cool (Solution) j727t1 exynos efs failed, new bootloader, efs backup not needed !!!


Hello, i have a samsung j727t1 for unlock, as you know this phone can be unlocked making cert backup and wiping efs, so i make backup with other tool but when trying to wipe the efs it says fail: New Bootloader try to downgrade

So after fail, the phone stuck on logo and wont boot so the solution is easy:

you dont need efs backup for the repair.

*Put phone in download mode
*scan port
*select modem port
*Choose Model Samsung Gsm (Is very Important choose only this model)
*Exynos efs reset
*When program ask for reset efs partial or full choose yes, because if you choose no, partial reset will be done and this brick the phone(stuck on logo)

Finally phone boot fine, just repair drk and write cert via uart.


Thanks Gcpro team !!!
 
The Following 2 Users Say Thank You to celumaster. For This Useful Post:
Old 07-10-2019, 22:36   #2 (permalink)
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Join Date: Jan 2011
Location: Honduras
Posts: 637
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Here are some captures of process when fail and done:

https://ibb.co/ZYj7fWB
https://ibb.co/yhTY3PG
https://ibb.co/PQzHpsx

Thanks Gcpro team !!!
 
 

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