ro.baseband = unknown
vendor.mtk.md1.status = bootup (modem not ready; was exception before with nvram_main assert in dmesg)
No SIM / no network signal
gsm.sim.state empty
What caused it (my mistake):
Corrupted NVRAM after bad ADB commands, then factory reset did not fix
Later formatted nvdata + nvcfg during unauthorized-repair recovery (Transsion anti-crack loop)
RF calibration / NVRAM data is likely wiped
What I already tried:
Full stock firmware flash (super, boot, md1img, tranfs, tkv, userdata, etc.) via Penumbra — phone boots OK
Re-flashed md1img + vendor_boot — still unknown baseband
Stock scatter has nvram / nvdata / nvcfg with file_name: NONE (no images in ROM package)
Carlcare IMEI Tool V7 — ahsSetup security plugin crashes Windows 11 (cannot install)
MTK_Functions_Sample — Meta connect not successful while modem is bootup
What I need:
nvram.bin + nvdata.bin (or Miracle/MTK backup) from a working Infinix Note 40 5G X6852-OP (same model; similar build 15.1.x if possible)
Or the correct Meta/calibration path for X6852 MT6855
I have original IMEI from the phone box (15 digits ×2, DSDS) ready to write after baseband is fixed.
Can anyone share an X6852 NVRAM backup or point me to the right repair method?