[Samsung Galaxy S10+ Questions & Answers] snakebite3:
Samsung S10 + SM-F975F/DS IMEI stating Taiwan (Update: Very contradicting information if the phone is Snapdragon OR Exynos) if it even matters to solve the issue I dont know

Owner of the above since 2019 without issues; USB debugging mode activated in 2019 and never changed since then.

Samsung always updated which I assume the UI 3 Android got updated in January of my vague memory/recollection (honestly never paid attention of what is being updated, only that the phone needs to be on charge while doing ANY update)

Issue: phone in constant bootloop every 4 minutes with top message in red color "ERASE FAIL: READ ONLY" see photo attached

Cause: happened 4 days ago: Watched video stream on chrome browser; phone froze and applied a 10sec. power shut off (never had to do that before, 1st time)

Investigation:

I tried (found out by doing so) to interrupt the bootloop with pressing Power button and same time Volume Down Button in order to restart it and follow the following commands found on the

internet

as per UI 3 update:

Recovery Mode

as followed does nothing:

Hold the Power button of your device till the power menu pops up and select Power Off. = does not apply as in bootloop

Wait for your device to turn off completely. = it does never turn off completely UNLESS I press Power button and same time Volume Down Button und plug into USB C Data cable of which the charging circle with the lightening strike appears without any percentage % of which photo is attached (phone charge can keep up with its bootloop in order to avoid battery drainage as there is no % indication)

Plug-in a USB-C data cable connected to your PC or USB-C earphones in your device. = I start from here whenever the phone restarts every 4 minutes or whenever I do it manually by pressing the buttons as I described in point 2.

Now, check if your device has a Bixby Button (Such as Galaxy S10/Note10):

Without Bixby Button: Press Volume Up + Power Button for a few seconds.

With Bixby Button: Press Volume Up + Bixby Button + Power Button for a few seconds

After the above steps, you will boot into Recovery mode.

Download Mode

as followed does nothing: IT DOES WORK NOW you need to be very fast before the phone starts (recovery mode does not work)

Make sure you have a USB cable connected to the computer

Then press and hold the Volume Down and Bixby buttons at the same time

Continue holding these two buttons down while you insert the USB cable that is connected to the PC

Recovery Mode before update instructions

as followed does nothing:

Step 1: Start by turning off your Galaxy S10.

Step 2: After it’s powered down, press and hold Volume Up button and Bixby button (this is the button underneath the volume buttons in case you didn’t know).

Step 3: Without letting go of the Volume Up and Bixby buttons, press and hold the Power button.

Step 4: As soon as your device turns on, let go of the Power button.

Step 5: After you see a blue screen, let go of the remaining two buttons. Now you are in Recovery mode.

Download Mode

before update instructions

as followed does nothing:

Step 1: Turn off your Galaxy S10.

Step 2: When it’s turned off, press and hold the Volume Down button and Bixby button.

Step 3: Without letting go of the two buttons, press and hold the Power button.

Step 4: You will get into Download Mode.

Have tried all the above methods several times the past 4 days.

Have drained the battery in terms of keeping the phone in bootloop resulting in no power.

Unhooked the battery by means of removing the rear panel and unhooking the battery cable for more then 15minutes and repeat the 4 different methods

Unhooked the mainboard from various connections and put together and repeat the 4 different methods

No indications in Windows 10 Device manager

Questions, doubts and thoughts:

Is it possible in this state to access with ADB of a professional in order to perhaps clear the cache, resolve the issue without having access to recovery mode?

Should I simply try to purchase a new battery even though I never had any battery issues?

I am aware that a motherboard change will resolve it to the cheapest way possible but as I like to save the data such as different accounts this is not an option besides the phone is physically in good condition (never went under water or dropped). maybe to unsolder the flash memory onto a new mainboard as recovery mode might be part of the processor where the RAM is saved.

Any way to drain the entire phone further which may resolve the issue without loosing data. Similar in removing a CMOS battery on a PC mainboard and using a jumper.

Willing to pay and currently living in Europe.

UPDATE:

Odin firmware performed by skilled professional member of xda forum, but still not working. EMMC issue which needs to be addressed with ISP in order to fix the issue. unfortunately I was told by local professionals that they do not have the tools for it. Therefor I wonder if someone knows someone who knows someone who can be of help. Location is Spain but Europe would also work.

UPDATE2:

Got the phone back from technician who has experience with ISP but still same Error remains as to his conclusion that this is not an Exynos phone of which he has not the hardware tool to fix it and probably no one in Europe will have it.

Thank you very much in advance