Get the POGO needle clip ilustrated here, for the programmer and read/save the contents of the GD25R256D
The file in folder “BIOS Binary File” shoud be correct for programer use.
The system still has boot block working…it seems, hard to believe that the bios RECOVERY doesnt work…
You should use same original verison to recover and not latest.
Latest version seems to be [0078]
BIOS Update 0078 for NUC11TNBv5 / NUC11TNBv7 / NUC11TNHv5 / NUC11TNHv7 / NUC11TNKv5 / NUC11TNKv7(https://www.asus.com/supportonly/nuc11tnkv5/helpdesk_bios/)
TNTGL357.xxxx is not the same as TNTGLV57.xxxx… pay attention to what your doing and the correct ID/correct files to the system board…
Guides using CH341A:
[Guide] Using CH341A-based programmer to flash SPI EEPROM - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum
That’s all from me and what’s possible to help from a remote forum thread, nothing more to add, good luck.