XMM6180

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This is the baseband platform used in the iPhone 4 (iPhone3,1), iPhone 4 (iPhone3,2) and iPad 2 (iPad2,2). It is produced by Infineon and is marketed as the X-Gold 618.

The firmware is based on ThreadX, a realtime OS.

Firmware files are signed for a specific device by Apple during the restore process. As a result, the baseband will allow downgrades provided that Apple is still signing the firmware.

Main Features (according to Datasheet)

Modem

  • HSDPA/HSUPA 7.2Mbps/2.9Mbps (Apple confirmed upload was 5.8Mbps)
  • WCDMA: 384kbps DL/UL
  • EDGE up to MSC33 with SAIC
  • Speech: NB-AMR, WB-AMR

CPU

  • ARM1176 @ 416MHz

Memory

  • LPDDR1-SDRAM
  • NOR & NAND Flash
  • eSD/eMMC

Connectivity and Interfaces

  • Digital RF interface V3.09
  • High speed SIM card interface
  • USB 2.0 HS
  • 3 x USIF; 2xI2S; 2xI2C
  • 3 x SD/MMC card interface

Memory Map

  • 0x40FE0000-0x41000000 -- Bootloader(0x2)
  • 0x40040000-0x40800000 -- Main Code(0x4)
  • 0x40800000-0x41000000 -- AENEAS(0x5)
  • 0x60000000-0x60200000 -- EBL(0x3)
  • 0x00080000-0x00A00000 -- PSI_RAM(0x1)
  • 0x40800000-0x40A00000 -- CDS(0x4)

Although the crash dump would seem to contradict this, code running from 0x60xxxxxx

Flash Files in 01.59.00

  • psi_ram.fls
    • RAM bootloader?
    • 0x80000 size 0xFF00
  • psi_flash.fls
    • Flash bootloader
    • 0x40FE0000 size 0x8000
  • stack.fls(ICE3.fls)
    • Main baseband code
    • 0x40040000 size 0x6F7E5C
    • start vector @ 0x40040408
  • ebl.fls
    • Flashing loader??
    • 0x60000000 size 0xDFB0

Known Firmware Versions

iPhone 4 (iPhone3,1), iPhone 4 (iPhone3,2) and iPad 2 (iPad2,2)

The first iPad 2s were delivered with iOS 4.3, so the oldest possible baseband would be 04.10.01 for this device.
The iPhone 4 did not receive iOS 8, so the latest possible baseband would be 04.12.09 for this device.

01.59.00    4.0          (Build 8A293)
            4.0.1        (Build 8A306)
            4.0.2        (Build 8A400)
02.07.01    4.1 beta     (Build 8B5080c)
02.10.01    4.1 beta 2   (Build 8B5091b)
            4.1 beta 3   (Build 8B5097d)
02.10.04    4.1          (Build 8B117)
03.08.00    4.2 beta     (Build 8C5091e)
03.09.00    4.2 beta 2   (Build 8C5101c)
03.10.01    4.2 beta 3   (Build 8C5115c)
            4.2 GM       (Build 8C134)
            4.2.1 GM     (Build 8C148)
            4.2.1        (Build 8C148)
04.08.00    4.3 beta     (Build 8F5132f)
            4.3 beta     (Build 8F5148b)
04.09.00    4.3 beta 2   (Build 8F5153d)
04.10.01    4.3 beta 3   (Build 8F5166b)
            4.3 GM       (Build 8F190)
            4.3          (Build 8F190)
            4.3          (Build 8F191)
            4.3.1        (Build 8G4)
            4.3.2        (Build 8H7)
            4.3.3        (Build 8J2)
            4.3.4        (Build 8K2)
            4.3.5        (Build 8L1)
04.11.04    5.0 beta     (Build 9A5220p)
04.11.06    5.0 beta 2   (Build 9A5248d)
            5.0 beta 3   (Build 9A5259f)
            5.0 beta 4   (Build 9A5274d)
04.11.07    5.0 beta 5   (Build 9A5288d)
04.11.08    5.0 beta 6   (Build 9A5302b)
            5.0 beta 7   (Build 9A5313e)
            5.0 GM       (Build 9A334)
            5.0.1 beta   (Build 9A402)
            5.0.1 beta 2 (Build 9A404)
            5.0.1        (Build 9A405)
04.12.00    5.1 beta     (Build 9B5117b)
            5.1 beta 2   (Build 9B5127c)
04.12.01    5.1 beta 3   (Build 9B5141a)
            5.1          (Build 9B176)
            5.1.1        (Build 9B206)
04.12.02    6.0 beta     (Build 10A5316k)
            6.0 beta 2   (Build 10A5336d)
            6.0 beta 3   (Build 10A5355d)
            6.0 beta 4   (Build 10A5376e)
            6.0 GM       (Build 10A403)
            6.0          (Build 10A403)
            6.0.1        (Build 10A523)
            6.1 beta     (Build 10B5095f)
            6.1 beta 2   (Build 10B5105c)
            6.1 beta 3   (Build 10B5117b)
            6.1 beta 4   (Build 10B5126b)
            6.1 beta 5   (Build 10B141)
            6.1 beta 5   (Build 10B144)
04.12.05    6.1          (Build 10B141)
            6.1.1 beta   (Build 10B311)
            6.1          (Build 10B144)
            6.1.2        (Build 10B146)
            6.1.3 beta 2 (Build 10B311)
            6.1.3        (Build 10B329)
04.12.06    7.0 beta     (Build 11A4372q) [iPhone only]
            7.0 beta 2   (Build 11A4400f)	
04.12.08    7.0 beta 3   (Build 11A4414e)
            7.0 beta 4   (Build 11A4435d)
04.12.09    7.0 beta 5   (Build 11A4449a)
            7.0 beta 6   (Build 11A4449d)
            7.0 GM       (Build 11A465)
            7.0          (Build 11A465)
            7.0.2        (Build 11A501)
            7.0.3        (Build 11B511)
            7.0.4        (Build 11B554a)
            7.0.6        (Build 11B651)
            7.1 beta     (Build 11D5099e)
            7.1 beta 2   (Build 11D5115d)
            7.1 beta 3   (Build 11D5127c)
            7.1 beta 4   (Build 11D5134c)
            7.1 beta 5   (Build 11D5145e)
            7.1          (Build 11D167)
            7.1          (Build 11D169)
            7.1.1        (Build 11D201)
            7.1.2        (Build 11D257)
            8.0 beta     (Build 12A4265u)
            8.0 beta 2   (Build 12A4297e)
            8.0 beta 3   (Build 12A4318c)
            8.0 beta 4   (Build 12A4331d)
            8.0 beta 5   (Build 12A4345d)
            8.0 GM       (Build 12A365)
            8.0          (Build 12A365)
            8.0.1        (Build 12A402)
            8.0.2        (Build 12A405)
            8.1 beta     (Build 12B401)
            8.1 beta 2   (Build 12B407)
            8.1          (Build 12B410)
            8.1.1 beta   (Build 12B432)
            8.1.1        (Build 12B435)
            8.1.2        (Build 12B440)
            8.1.3        (Build 12B466)
            8.2 beta     (Build 12D436)
            8.2 beta 2   (Build 12D445d)
            8.2 beta 3   (Build 12D5452a)
            8.2 beta 4   (Build 12D5461b)
            8.2 beta 5   (Build 12D5480a)
            8.2          (Build 12D508)
            8.3 beta     (Build 12F5027d)
            8.3 beta 2   (Build 12F5037c)
            8.3 beta 3   (Build 12F5047f)
            8.3 beta 4   (Build 12F61)
            8.3          (Build 12F69)
            8.4 beta 2   (Build 12H4086d)
            8.4 beta 3   (Build 12H4098c)
            8.4 beta 4   (Build 12H4125a)
            8.4          (Build 12H143)
            8.4.1 beta   (Build 12H304)
            8.4.1 beta 2 (Build 12H318)
            8.4.1        (Build 12H321)
            9.0 beta     (Build 13A4254v)
            9.0 beta 2   (Build 13A4280e)
            9.0 beta 3   (Build 13A4293g)
            9.0 beta 4   (Build 13A4305g)
            9.0 beta 5   (Build 13A4325c)
            9.0 GM       (Build 13A340)
            9.0          (Build 13A344)
            9.0.1        (Build 13A404)
            9.0.2        (Build 13A452)
            9.1 beta     (Build 13B5110e)
            9.1 beta 2   (Build 13B5119e)
            9.1 beta 3   (Build 13B5130b)
            9.1 beta 4   (Build 13B136)
            9.1 beta 5   (Build 13B137)
            9.1          (Build 13B143)
            9.2 beta     (Build 13C5055d)
            9.2 beta 2   (Build 13C5060d)
            9.2 beta 3   (Build 13C71)
            9.2 beta 4   (Build 13C75)
            9.2          (Build 13C75)
            9.2.1 beta   (Build 13D11)
            9.2.1 beta 2 (Build 13D14)
            9.2.1        (Build 13D15)
            9.3 beta     (Build 13E5181d)
            9.3 beta 1.1 (Build 13E5181f)
            9.3 beta 2   (Build 13E5191d)
            9.3 beta 3   (Build 13E5200d)
            9.3 beta 3   (Build 13E5200d)
            9.3 beta 4   (Build 13E5214d)
            9.3 beta 5   (Build 13E5225a)
            9.3 beta 6   (Build 13E5231a)
            9.3 beta 7   (Build 13E5233a)
            9.3          (Build 13E233)
            9.3          (Build 13E236)
            9.3.1        (Build 13E238)
            9.3.2 beta   (Build 13F51a)
            9.3.2 beta 2 (Build 13F61)
            9.3.2 beta 3 (Build 13F65)
            9.3.2 beta 4 (Build 13F68)
            9.3.2        (Build 13F69)
            9.3.3 beta   (Build 13G12)
            9.3.3 beta 2 (Build 13G21)
            9.3.3 beta 3 (Build 13G29)
            9.3.3 beta 4 (Build 13G33)
            9.3.3 beta 5 (Build 13G34)
            9.3.3        (Build 13G34)
            9.3.4        (Build 13G35)
            9.3.5        (Build 13G36)

See Also