Talk:Samsung

Samsung left the certificate for their one service expired, making older phone incapable of unlocking their boot loader after factory reset.

This is basically a nearly incoherent word vomit that I just wanted to get it out there asap before I forgot about it. Is related to the "Samsung has sold devices capable of bootloader unlocking, but further restricted it with an update." point

According to this: https://xdaforums.com/t/seems-like-the-server-samsung-use-to-unlock-rmm-prenormal-is-abandoned-expired-certificate-whats-next-lol.4403393/

Samsung hides the option to unlock the bootloader on certain phone lines until the device is around 7 or 14 days old since the last factory reset. The server that these phones contacting to, rmm.samsung.com , had its certificate expired since November of 2021 (https://www.sslchecker.com/sslchecker?su=f24f153686c13e2a4e86934cf19ef27d or just attempting to access the domain in ones browser), which makes some devices that was recently reset back to their stock OS effectively being indefinitely locked out of being able to, well, unlock the boot loader and install custom ROMS and such, despite being previously able to do so.

This is something I have experienced myself, buying a secondhand A5 2017 to mess around with custom ROMs in around 2023-ish. The phone had previously been activated and I could see the "Unlock boot loader" option in the developer setting. I then made the 200IQ move of factory reseting the device since it had personal information on it and I don't want to connect my PC to it (who knows what kinda virus is on it). The option never came back no matter how long I waited and how many tricks and ritual I tried.

Some other pages I managed to find that mentions this, no articles sadly:

https://4pda.to/forum/index.php?showtopic=881591&st=3160 (in Russian)

https://eu.community.samsung.com/t5/galaxy-a-series/samsung-a5-2017-no-oem-unlock/td-p/5255654 45.87.213.229 13:19, 27 August 2025 (UTC)