HI,
this GPS i use it from time to time, and was working with no issue.
once i want to use it, it was working and booting with no issue, only if i set rout, i found no voice is there. si i plug it to my PC to see why. here i found was asking to format the memory of it, i try all thing before i do so, connect to garmin app and other, with no luck, so i did the format, still did not work and each time i plug it say same, format
that time as i have access to it, i did go to test menu in it by press the battery icon, and i get error that internal ROM have error. i don't remover exact word, but the ROM cannot be seen in it.

so then i post here for help, and i get help to go to page to do kunix's Cure3 firmware. to reinstall the SW. where i did all the step in it as it was told word by word and tried it over 20 time till now in 2 PC. with same issue. i reach here as the initial issue is become different after i did kunix's Cure3 firmware.

so the history of my GPS is = working but no voice > format did not work > did the kunix's Cure3 firmware > did not work > did cure , format RMPrep , original and did not work.

i reach this page after i get help from my 1st post for kunix's Cure3 firmware. and i did check HWID is 1613
my unit is refurbished unit i bought from eBay long back and was working for years with me. and yes i remembered i managed to install maps on SD and GPS worked but with no voice to guide .

i did read a lot, that why i reach to this point.

really thank you for your patience with me

EDIT 1:
1) Bricked device MODEL, Firmware version, HWID. nuvi 52 HWID 1613

2) Why and how the device got bricked. after i did the cure, it was 1st working but no access to ROM so no voice or lang

3) Symptoms: what's wrong in your device? was working as booting, but the internal memory was not acccple so no voice/lang and each time i plug on my PC asked to format the internal memory

4) Does your pc sees your device ? when was booting yes and ask to format, after i did the cure, no dose not. only in cure it see. stuck now on Garmin logo

5) List all the procedures you already tried to unbrick it and their results and errors messages obtained. did the cure> original did not work, then cure > format RMPrepUSB > original in 2 PC still did not work. stuck now on Garmin logo.

6) Do you have Garmin USB Drivers installed ? Garmin: USB Drivers Updates & Downloads yes all is there

7) If you don't know HWID get it by Use program G7ToWin to retrieve your HWID it is 1613 US model

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 did it more than 20 time in 2 PC

9) Can you reach preboot mode? If no ,have you followed this? Garmin devices pre boot mode yes i do reach by cure and see ROM, and i created .system and Garmin folder still no boot, stuck now on Garmin logo

10) Probably no , but do you have NV backup? NO

EDIT 2:
I MANGED TO make it work at last

what i did, in cure fase, i format the memory from my PC it self, and make it fat, then install the .system, Garmin and GarminDevice.xml.

and once i boot, it become alive again.... don't know why this worked..but this was the only thing i did now and it worked. and it boot as new..

thanks alot....