XMM6180

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.

Baseband	Version	Build
01.59.00	4.0	8A293
	4.0.1	8A306
	4.0.2	8A400
02.07.01	4.1 beta	8B5080c
02.10.01	4.1 beta 2	8B5091b
	4.1 beta 3	8B5097d
02.10.04	4.1 GM	8B117
	4.1
03.08.00	4.2 beta	8C5091e
03.09.00	4.2 beta 2	8C5101c
03.10.01	4.2 beta 3	8C5115c
	4.2 GM	8C134
	4.2.1 GM	8C148
	4.2.1
04.08.00	4.3 beta	8F5132f
		8F5148b
04.09.00	4.3 beta 2	8F5153d
04.10.01	4.3 beta 3	8F5166b
	4.3 GM	8F190
	4.3
		8F191
	4.3.1	8G4
	4.3.2	8H7
	4.3.3	8J2
	4.3.4	8K2
	4.3.5	8L1
04.11.04	5.0 beta	9A5220p
04.11.06	5.0 beta 2	9A5248d
	5.0 beta 3	9A5259f
	5.0 beta 4	9A5274d
04.11.07	5.0 beta 5	9A5288d
04.11.08	5.0 beta 6	9A5302b
	5.0 beta 7	9A5313e
	5.0 GM	9A332
		9A334
	5.0
	5.0.1 beta	9A402
	5.0.1 beta 2	9A404
	5.0.1	9A405
04.12.00	5.1 beta	9B5117b
	5.1 beta 2	9B5127c
04.12.01	5.1 beta 3	9B5141a
	5.1 beta 4	9B155
	5.1 GM	9B174
	5.1	9B169
		9B172
		9B176
	5.1.1	9B206
		9B208
04.12.02	6.0 beta	10A5316k
	6.0 beta 2	10A5338d
	6.0 beta 3	10A5355d
	6.0 beta 4	10A5376e
	6.0 GM	10A403
	6.0	10A402
		10A403
	6.0.1	10A523
	6.1 beta	10B5095f
	6.1 beta 2	10B5105c
04.12.04	6.1 beta 3	10B5117b
	6.1 beta 4	10B5126b
04.12.05	6.1 GM	10B141
		10B144
	6.1	10B137
		10B141
		10B144
	6.1.1 beta	10B311
	6.1.2	10B146
	6.1.3 beta 2	10B318
		10B318a
	6.1.3	10B327
		10B329
04.12.06	7.0 beta	11A4372q
	7.0 beta 2	11A4400f
04.12.08	7.0 beta 3	11A4414c
		11A4414e
	7.0 beta 4	11A4435d
04.12.09	7.0 beta 5	11A4449a
	7.0 beta 6	11A4449d
	7.0 GM	11A465
	7.0
	7.0.2	11A501
	7.0.3	11B508
		11B511
	7.0.4	11B553
		11B554a
	7.0.6	11B651
	7.1 beta	11D5099e
	7.1 beta 2	11D5115d
	7.1 beta 3	11D5127c
	7.1 beta 4	11D5134c
	7.1 beta 5	11D5145e
	7.1 GM	11D167
		11D169
	7.1	11D167
		11D169
	7.1.1	11D201
	7.1.2	11D257
	8.0 beta	12A4265u
	8.0 beta 2	12A4297e
	8.0 beta 3	12A4318c
	8.0 beta 4	12A4331d
	8.0 beta 5	12A4345d
	8.0 GM	12A365
	8.0
	8.0.1	12A402
	8.0.2	12A405
	8.1 beta	12B401
	8.1 beta 2	12B407
	8.1	12B410
	8.1.1 beta	12B432
	8.1.1	12B435
	8.1.2	12B440
	8.1.3	12B466
	8.2 beta	12D436
	8.2 beta 2	12D445d
	8.2 beta 3	12D5452a
	8.2 beta 4	12D5461b
	8.2 beta 5	12D5480a
	8.2	12D508
	8.3 beta	12F5027d
	8.3 beta 2	12F5037c
	8.3 beta 3	12F5047f
	8.3 beta 4	12F61
	8.3	12F69
	8.4 beta	12H4074d
	8.4 beta 2	12H4086d
	8.4 beta 3	12H4098c
	8.4 beta 4	12H4125a
	8.4	12H143
	8.4.1 beta	12H304
	8.4.1 beta 2	12H318
	8.4.1	12H321
	9.0 beta	13A4254v
	9.0 beta 2	13A4280e
	9.0 beta 3	13A4293f
		13A4293g
	9.0 beta 4	13A4305g
	9.0 beta 5	13A4325c
	9.0 GM	13A340
	9.0	13A344
9.0.1	13A404
9.0.2	13A452
9.1 beta	13B5110e
9.1 beta 2	13B5119e
9.1 beta 3	13B5130b
9.1 beta 4	13B136
9.1 beta 5	13B137
9.1	13B143
9.2 beta	13C5055d
9.2 beta 2	13C5060d
9.2 beta 3	13C71
9.2 beta 4	13C75
9.2
9.2.1 beta	13D11
9.2.1 beta 2	13D14
9.2.1	13D15
9.3 beta	13E5181d
9.3 beta 1.1	13E5181f
9.3 beta 2	13E5191d
9.3 beta 3	13E5200d
9.3 beta 4	13E5214d
9.3 beta 5	13E5225a
9.3 beta 6	13E5231a
9.3 beta 7	13E5233a
9.3	13E233
	13E236
9.3.1	13E238
9.3.2 beta	13F51a
9.3.2 beta 2	13F61
9.3.2 beta 3	13F65
9.3.2 beta 4	13F68
9.3.2	13F69
9.3.3 beta	13G12
9.3.3 beta 2	13G21
9.3.3 beta 3	13G29
9.3.3 beta 4	13G33
9.3.3 beta 5	13G34
9.3.3
9.3.4	13G35
9.3.5	13G36

See Also

• Baseband version 01.51.00