UE55HU7500L - Local Set unavailable. EEPROM RESET?

[NemoHaggis]

Hello. I have acquired a UE55HU7500LXZF (originally French) as a project. I want to change the Local Set to EU_UK, but I cannot make that option appear on any service menu. I have successfully used the IR Blaster max volume WAV files to send INFO, FACTORY, 3SPEED etc commands and display service menus, but none of them succeed in even _showing_ the option, even greyed out.

If I send an "INFO FACTORY" command with the power on, the screen displays "NOT AVAILABLE" in a grey box in the lower left corner.

I have tried everything ChatGPT/Google.AI suggests - Hospitality Mode ON/OFF, Hospitality mode 12345-Enter, Mute-182-Enter, 00000 on Advanced option to open up deeper menu options, 3SPEED FACTORY on option menu to extend menu options.

"Local Set" just does not appear.

When I first switched on the TV, the display was in Far East glyphs (can't tell if Chinese or Japanese) but fortunately have been able to switch the language to English. If I go to the MRT options following the FACTORY+3SPEED command, it shows "Language_Arabic: HONGKONG" and "Region: HKG" entries, both greyed out. I am wondering if the TV has been set to a Hong Kong "local set" and this is more locked down than other regions?

So.... I have located the service manual "samsung_ue55hu7500l_ue65hu7500l_chassis_u8ga_sm.pdf" and it documents an "EEPROM RESET" option under SVC.RESET menu option. Might this be what I need to do to re-enable Local Set option display?

Google.AI declares:

"When your TV was manufactured, a technician hooked it up to specialized hardware to perform fine-tuned ADC (Analog-to-Digital Converter) calibrations, white balance adjustments, and panel color profiles unique to your specific physical display. An "EEPROM RESET" permanently deletes these custom calibrations"

Is that true?

How bad can I mess up this TV if I use this EEPROM RESET command?


Thank you