For making flasheable your HTC one X you need to do following procedure:
1. Connect pinout as described on support
2. Write corresponding dump into the ROM1 - 512MB_HTC_ONE_X_ROM1
3. Write HTC_ONE_X_ROM2.rar to ROM2 and ROM3
4. Download from here HTC_ONE_X_SOLUTION_TEST.rar Pass: "GPGEMMC ARE ****ED COPYPASTERS"
5. Write rawpt_16g.BIN or rawpt_32g.BIN at USER ROM1 area depeding of your eMMC size ( see in connection log )
6. Write EMMC_00200000_BIF_HTC__Y13_353999999999999.BIN in BIF partition ( you may fix IMEI in any hex editor )
7. Write EMMC_00400000_SIF_1.00.000.0_1.0000.0000.00.bin in SIF partition ( phone will be 1.00.000.000 )
8. Download RUU_ENDEAVOR_U_JB_45_S_HTC_Europe_3.14.401.31_R_Ra dio_5.1204.162.29_release_302015_signed.exe
9. If you want another region you can edit CID in EMMC_00200000_BIF_HTC__Y13_353999999999999.BIN current HTC__Y13
10. Desolder wires and flash phone. Do not forget remove JUMPER from eMMC reset pin.
If you need to upgdate boot - try
this solution
P.S. If this will not work we need another rooted device with lower HBOOT version to get correct downgrade data.
P.P.S. GPGEMMC focusers , you may do all this things in sw or even put in ONE SUPER REPAIR button and call this world first but do not forget write credits from where you have copied data.
Link:
HTC_ONE_X_SOLUTION_TEST