Approach S2J not reading internal flash memory

[ChrisJP]

1) Bricked device MODEL, Firmware version, HWID.
Approach S2J, FW 240, HWID 1891

2) Why and how the device got bricked.
Battery went done while using it on the course.
After recharging the battery, the watch does locate satellite.
But it does not update time to proper timezone and does not find the golf course (stuck on 'searching for golf course' after locating satellites).

3) Symptoms: what's wrong in your device?
I believe the watch does not read/access the flash memory so cant read gmaptz.img for the timezone and gmapsup*.img for the golf course

4) Does your pc sees your device ?
Yes

5) List all the procedures you already tried to unbrick it and their results and errors messages obtained.
I did a Soft and Master rest, used Garmin Express, Garmin WebUpdater and finally GarminCure3.exe
I did a backup then reformat the flash drive

With GarminCure3.exe I can flash the firmware.
I was not able to make a Cure FW:

This is a GCD file.
Patchable HWIDs: 1891
*Processing HWID 1891
got an exception:
HWID=1891 was NOT CURED
Processing FAILED

6) Do you have Garmin USB Drivers installed ? Garmin: USB Drivers Updates & Downloads
Yes, I have the latest USB driver from Garmin: USBDrivers_2312

7) If you don't know HWID get it by Use program G7ToWin to retrieve your HWID
HWID 1891

8) Write down if you already read or tried GarminCure3 tool - the new way to create cure firmwares for Garmin devices
How to unbrick a nüvi - step by step guide
Yes I tried. But could not get a Cure FW (error message above)

9) Can you reach preboot mode? If no ,have you followed this? Garmin devices preboot mode
Yes, by switching off, press UP then plug in PC USB

10) Probably no , but do you have NV backup?
Yes I have a backup

11) Once you get a reply and a procedure to follow from our experts, please give an accurate reply about what you did and obtained results.
Will do

[ChrisJP]

UPDATE1: after formatting with MRP, I'm able to have the watch working again!
I put all the info in the RMP thread - still haven't recovered the full flash memory space.

[Only registered and activated users can see links. ]

UPDATE2: the full storage size has been recovered. All information in above thread link.

UPDATE3: I've done a short VDO to document the whole process
[Only registered and activated users can see links. ]