MDM9615

The Qualcomm MDM9615M is the baseband chip used in the iPad (4th generation), iPad mini, iPad mini 2 iPad Air, iPhone 5, iPhone 5c and iPhone 5s. It is a 28 nm LTE (FDD and TDD), HSPA+, EV-DO Rev B, TD-SCMA modem and allows for multi-spectrums, multi-mode LTE support. It is responsible for transmitting simultaneous voice and data transfer on LTE (provided the carrier has the infrastructure to allow simultaneous voice and data transfer.)

Right next to the Qualcomm MDM9615M is the Qualcomm RTR8600 multi-band/mode RF transceiver. The RTR8600 is paired alongside the MDM9615 to support various bands, including 5 UMTS bands, and over 5 LTE and 4 EDGE bands.

Baseband Firmware
The firmware for the baseband chip comes in either  files (for the iPhone 5, iPad (4th generation) and iPad mini) or   files (for iPhone 5c, iPhone 5s, iPad Air and iPad mini 2), with X being the version digits. The BBFW file is just a renamed standard ZIP archive and contains a couple of .mbn files which are all digitally signed with a certificate from Qualcomm - similar to the iPhone 4S.

One notable difference to the iPhone 4S baseband, is that since the iPad (3rd generation) and iPhone 5, the main baseband code is entirely running on the Hexagon DSP.

Looking at strings found in the baseband, this is based on the same source code base as used on older Qualcomm chipsets by other manufacturers (like HTC).

iPhone 5, iPad (4th generation) and iPad mini
1.00.16   6.0           (Build 10A405) 1.01.00   6.0.1         (Build 10A525) 6.0.2        (Build 10A551) 3.04.01   6.1 beta      (Build 10B5095f) 3.04.06   6.1 beta 2    (Build 10B5105c) 3.04.12   6.1 beta 3    (Build 10B5117b) 3.04.17   6.1 beta 4    (Build 10B5126b) 3.04.25   6.1 beta 5    (Build 10B143?) 6.1          (Build 10B143) 6.1.1 beta   (Build 10B311) 6.1.2        (Build 10B146) 6.1.3 beta 2 (Build 10B318) 6.1.3        (Build 10B329) 6.1.4        (Build 10B350) 4.14.01   7.0 beta      (Build 11A4372q) 4.17.01   7.0 beta 2    (Build 11A4400f) 4.18.02   7.0 beta 3    (Build 11A4414e) 4.18.06   7.0 beta 4    (Build 11A4435d) 5.00.00   7.0 beta 5    (Build 11A4449a) 7.0 beta 6   (Build 11A4449d) 5.00.01   7.0 GM        (Build 11A465) 7.0          (Build 11A465) 7.0.2        (Build 11A501) 5.02.00   7.0.3         (Build 11B511) 7.0.4        (Build 11B554a) 7.0.6        (Build 11B651) 6.00.02   7.1 beta      (Build 11D5099e) 6.00.03   7.1 beta 2    (Build 11D5115d) 6.00.05   7.1 beta 3    (Build 11D5127c) 7.1 beta 4   (Build 11D5134c) 6.00.07   7.1 beta 5    (Build 11D5145e) 6.02.00   7.1           (Build 11D167) 7.1.1        (Build 11D201) 7.1.2        (Build 11D257) 7.02.03   8.0 beta      (Build 12A4265u) 7.02.06   8.0 beta 2    (Build 12A4297e) 7.02.10   8.0 beta 3    (Build 12A4318c) 7.02.12   8.0 beta 4    (Build 12A4331d) 7.02.13   8.0 beta 5    (Build 12A4345d) 7.03.00   8.0 GM        (Build 12A365) 8.0          (Build 12A365) 8.0.1        (Build 12A402) 8.0.2        (Build 12A405) 7.02.13   8.1 beta      (Build 12B401) 7.03.00   8.1 beta 2    (Build 12B407) 8.1          (Build 12B410 & 12B411) 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) 8.00.01   8.3 beta      (Build 12F5027d) 8.00.02   8.3 beta 2    (Build 12F5037c) 8.3 beta 3   (Build 12F5047f) 8.01.00   8.3 beta 4    (Build 12F61) 8.3          (Build 12F69 & 12F70) 8.00.02   8.4 beta      (Build 12H4074d) 8.4 beta 2   (Build 12H4086d) 8.4 beta 3   (Build 12H4098c) 8.00.03   8.4 beta 4    (Build 12H4125a) 8.02.00   8.4           (Build 12H143) 8.4.1 beta   (Build 12H304) 8.4.1 beta 2 (Build 12H308) 8.4.1        (Build 12H321) 9.00.00   9.0 beta      (Build 13A4254v) 9.00.02   9.0 beta 2    (Build 13A4280e) 9.00.03   9.0 beta 3    (Build 13A4293g) 9.00.04   9.0 beta 4    (Build 13A4305g) 9.0 beta 5   (Build 13A4325c) 9.0 GM       (Build 13A340) 10.00.00  9.0           (Build 13A344) 9.0.1        (Build 13A404) 9.0.2        (Build 13A452) 9.00.04   9.1 beta      (Build 13B5110e) 9.1 beta 2   (Build 13B5119e) 10.00.00  9.1 beta 3    (Build 13B5130b) 9.1 beta 4   (Build 13B136) 9.1 beta 5   (Build 13B137) 9.1          (Build 13B143) 9.00.03   9.2 beta      (Build 13C5055d) 9.2 beta 2   (Build 13C5060d) 10.00.00  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) 10.00.01  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 4   (Build 13E5214d) 10.01.00  9.3 beta 5    (Build 13E5225a) 9.3 beta 6   (Build 13E5231a) 9.3 beta 7   (Build 13E5233a) 9.3          (Build 13E233 & 13E237) 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) 11.80.00  9.3.6         (Build 13G37) (iPad mini only) 11.00.01  10.0 beta     (Build 14A5261v) 11.00.02  10.0 beta 2   (Build 14A5297c) 10.0 beta 3  (Build 14A5309d) 10.0 beta 4  (Build 14A5322e) 11.01.00  10.0 beta 5   (Build 14A5335b) 10.0 beta 6  (Build 14A5341a) 10.0 beta 7  (Build 14A5345a) 10.0 beta 8  (Build 14A5346a) 10.0.1 GM    (Build 14A403) 10.0.1       (Build 14A403) 10.0.2       (Build 14A456) 11.00.02  10.1 beta     (Build 14B55c) 11.01.00  10.1 beta 2   (Build 14B67) 10.1 beta 3  (Build 14B71) 10.1 beta 4  (Build 14B72) 10.1         (Build 14B72) 10.1.1       (Build 14B100 & 14B150) 11.20.00  10.2 beta     (Build 14C5062e) 10.2 beta 2  (Build 14C5069c) 11.21.00  10.2 beta 3   (Build 14C5077b) 10.2 beta 4  (Build 14C82) 10.2 beta 5  (Build 14C89) 10.2 beta 6  (Build 14C90) 10.2 beta 6  (Build 14C91) 10.2 beta 7  (Build 14C92) 10.2         (Build 14C92) 10.2.1 beta  (Build 14D10) 10.2.1 beta 2 (Build 14D15) 10.2.1 beta 3 (Build 14D23) 10.2.1 beta 4 (Build 14D27) 10.2.1       (Build 14D27) 11.50.00  10.3 beta     (Build 14E5230e) 10.3 beta 2  (Build 14E5239e) 10.3 beta 3  (Build 14E5249d) 11.51.00  10.3 beta 4   (Build 14E5260b) 10.3 beta 5  (Build 14E5269a) 10.3 beta 6  (Build 14E5273a) 10.3 beta 7  (Build 14E5277a) 10.3         (Build 14E277) 10.3.1       (Build 14E304) 11.50.00  10.3.2 beta 2 (Build 14F5075a) 11.60.00  10.3.2 beta 3 (Build 14F5080a) 10.3.2 beta 4 (Build 14F5086a) 10.3.2 beta 5 (Build 14F5089a) 10.3.2       (Build 14F89) 11.70.00  10.3.3 beta   (Build 14G5028a) 10.3.3 beta 2 (Build 14G5037b) 10.3.3 beta 3 (Build 14G5047a) 11.60.00  10.3.3 beta 4 (Build 14G5053a) 10.3.3 beta 5 (Build 14G5057a) 10.3.3 beta 6 (Build 14G57) 10.3.3       (Build 14G60) 11.80.00  10.3.4        (Build 14G61)

iPad Air, iPad mini 2, iPad mini 3, iPhone 5c and iPhone 5s
The first iPad Airs and iPad mini 2s were delivered with iOS 7.0.3, so the oldest possible baseband would be 1.02.02 for these devices. 1.00.06   7.0           (Build 11A465) 7.0.2        (Build 11A501) 1.02.02   7.0.3         (Build 11B511) 1.03.01   7.0.4         (Build 11B554a) 1.03.02   7.0.5         (Build 11B601) 7.0.6        (Build 11B651) 2.07.02   7.1 beta      (Build 11D5099e) 2.11.00   7.1 beta 2    (Build 11D5115d) 2.13.01   7.1 beta 3    (Build 11D5127c) 2.14.01   7.1 beta 4    (Build 11D5134c) 2.16.01   7.1 beta 5    (Build 11D5145e) 2.18.02   7.1           (Build 11D167) 7.1.1        (Build 11D201) 7.1.2        (Build 11D257) 3.07.01   8.0 beta      (Build 12A4265u) 3.08.04   8.0 beta 2    (Build 12A4297e) 3.08.09   8.0 beta 3    (Build 12A4318c) 3.08.12   8.0 beta 4    (Build 12A4331d) 3.08.16   8.0 beta 5    (Build 12A4345d) 3.09.01   8.0 GM        (Build 12A365) 8.0          (Build 12A365) 8.0.1        (Build 12A402) 8.0.2        (Build 12A405) 3.10.04   8.1 beta      (Build 12B401) 3.11.00   8.1 beta 2    (Build 12B407) 8.1          (Build 12B410) 8.1          (Build 12B411) 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) 4.00.09   8.3 beta      (Build 12F5027d) 4.00.10   8.3 beta 2    (Build 12F5037c) 8.3 beta 3   (Build 12F5047f) 4.01.00   8.3 beta 4    (Build 12F61) 8.3          (Build 12F69) 8.3          (Build 12F70) 4.02.00   8.4 beta      (Build 12H4074d) 8.4 beta 2   (Build 12H4086d) 8.4 beta 3   (Build 12H4098c) 4.03.00   8.4           (Build 12H143) 4.02.01   8.4 beta 4    (Build 12H4125a) 4.03.00   8.4.1 beta    (Build 12H304) 8.4.1 beta 2 (Build 12H318) 8.4.1        (Build 12H321) 5.00.03   9.0 beta      (Build 13A4254v) 5.00.07   9.0 beta 2    (Build 13A4280e) 5.00.09   9.0 beta 3    (Build 13A4293g) 5.00.10   9.0 beta 4    (Build 13A4305g) 5.00.11   9.0 beta 5    (Build 13A4325c) 9.0 GM       (Build 13A340) (iPhone 5c only) 9.0          (Build 13A344) (iPhone 5c only) 6.00.00   9.0 GM        (Build 13A341) (iPhone 5s, iPad Air, iPad mini 2 and iPad mini 3) 9.0          (Build 13A344) (iPhone 5s, iPad Air, iPad mini 2 and iPad mini 3) 9.0.1        (Build 13A404) 6.01.00   9.0.2         (Build 13A452) 5.00.11   9.1 beta      (Build 13B5110e) 9.1 beta 2   (Build 13B5119e) 6.01.00   9.1 beta 3    (Build 13B5130b) 9.1 beta 4   (Build 13B136) 9.1 beta 5   (Build 13B137) 9.1          (Build 13B143) 5.00.11   9.2 beta      (Build 13C5055d) 9.2 beta 2   (Build 13C5060d) 6.01.00   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) 9.2.1        (Build 13D20) (iPad mini 3) 6.01.03   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 4   (Build 13E5214d) 6.02.00   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 13E237) 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) 7.00.04   10.0 beta     (Build 14A5261v) 10.0 beta 2  (Build 14A5297c) 7.00.05   10.0 beta 3   (Build 14A5309d) 10.0 beta 4  (Build 14A5322e) 7.01.00   10.0 beta 5   (Build 14A5335b) 10.0 beta 6  (Build 14A5341a) 10.0 beta 7  (Build 14A5345a) 10.0 beta 8  (Build 14A5346a) 10.0.1 GM    (Build 14A403) 10.0.1       (Build 14A403) 10.0.2       (Build 14A456) 7.00.05   10.1 beta     (Build 14B55c) 7.01.00   10.1 beta 2   (Build 14B67) 10.1 beta 3  (Build 14B71) 10.1 beta 4  (Build 14B72) 10.1         (Build 14B72) 10.1.1       (Build 14B100) 10.1.1       (Build 14B150) 7.20.02   10.2 beta     (Build 14C5062e) 10.2 beta 2  (Build 14C5069c) 7.21.00   10.2 beta 3   (Build 14C5077b) 10.2 beta 4  (Build 14C82) 10.2 beta 5  (Build 14C89) 10.2 beta 6  (Build 14C90) 10.2 beta 7  (Build 14C92) 10.2         (Build 14C92) 10.2.1 beta  (Build 14D10) 10.2.1 beta 2 (Build 14D15) 10.2.1 beta 3 (Build 14D23) 10.2.1 beta 4 (Build 14D27) 10.2.1       (Build 14D27) 7.50.01   10.3 beta     (Build 14E5230e) 10.3 beta 2  (Build 14E5239e) 10.3 beta 3  (Build 14E5249d) 7.51.00   10.3 beta 4   (Build 14E5260b) 10.3 beta 5  (Build 14E5269a) 10.3 beta 6  (Build 14E5273a) 10.3 beta 7  (Build 14E5277a) 10.3         (Build 14E277) 10.3.1       (Build 14E304) 7.50.01   10.3.2 beta   (Build 14F5065b) 10.3.2 beta 2 (Build 14F5075a) 7.60.00   10.3.2 beta 3 (Build 14F5080a) 10.3.2 beta 4 (Build 14F5086a) 10.3.2 beta 5 (Build 14F5089a) 10.3.2       (Build 14F89) 7.70.00   10.3.3 beta   (Build 14G5028a) 10.3.3 beta 2 (Build 14G5037b) 10.3.3 beta 3 (Build 14G5047a) 7.60.00   10.3.3 beta 4 (Build 14G5053a) 10.3.3 beta 5 (Build 14G5057a) 10.3.3 beta 6 (Build 14G57 & 14G58) 10.3.3       (Build 14G60) 8.00.03   11.0 beta     (Build 15A5278f) 8.00.04   11.0 beta 2   (Build 15A5304i & 15A5304j) 11.0 beta 3  (Build 15A5318g) 11.0 beta 4  (Build 15A5327g) 11.0 beta 5  (Build 15A5341f) 8.01.00   11.0 beta 6   (Build 15A5354b) 11.0 beta 7  (Build 15A5362a) 11.0 beta 8  (Build 15A5368a) 11.0 beta 9  (Build 15A5370a) 11.0 beta 10 (Build 15A5372a) 11.0 GM      (Build 15A372) 11.0         (Build 15A372) 11.0.1       (Build 15A402) 11.0.2       (Build 15A421) 11.0.3       (Build 15A432) 8.00.04   11.1 beta     (Build 15B5066f) 11.1 beta 2  (Build 15B5078e) 8.01.00   11.1 beta 3   (Build 15B5086a) 11.1 beta 4  (Build 15B92) 11.1 beta 5  (Build 15B93) 11.1         (Build 15B93) 11.1.1       (Build 15B150) 11.1.2       (Build 15B202) 8.30.00   11.2 beta     (Build 15C5092b) 11.2 beta 2  (Build 15C5097d) 8.30.01   11.2 beta 3   (Build 15C5107a) 11.2 beta 4  (Build 15C5110b) 11.2 beta 5  (Build 15C5111a) 11.2 beta 6  (Build 15C114) 11.2         (Build 15C114) 11.2.1       (Build 15C153) 11.2.2       (Build 15C202) 11.2.5 beta  (Build 15D5037e) 11.2.5 beta 2 (Build 15D5046b) 11.2.5 beta 3 (Build 15D5049a) 11.2.5 beta 4 (Build 15D5054a) 11.2.5 beta 5 (Build 15D5057a) 11.2.5 beta 6 (Build 15D5059a) 11.2.5 beta 7 (Build 15D60) 11.2.5       (Build 15D60) 11.2.6       (Build 15D100) 8.52.00   11.3 beta     (Build 15E5167f) 8.54.00   11.3 beta 2   (Build 15E5178f) 11.3 beta 3  (Build 15E5189f) 11.3 beta 4  (Build 15E5201e) 8.55.00   11.3 beta 5   (Build 15E5211a) 11.3 beta 6  (Build 15E5216a) 11.3         (Build 15E216) 11.3.1       (Build 15E302) 8.54.00   11.4 beta     (Build 15F5037c) 8.55.00   11.4 beta 2   (Build 15F5049c) 11.4 beta 3  (Build 15F5061d) 11.4 beta 4  (Build 15F5071a) 11.4 beta 5  (Build 15F5077a) 11.4 beta 6  (Build 15F5079a) 11.4         (Build 15F79) 8.54.00   11.4.1 beta   (Build 15G5054c) 8.55.00   11.4.1 beta 2 (Build 15G5063b) 11.4.1 beta 3 (Build 15G5072a) 11.4.1 beta 4 (Build 15G5074a) 11.4.1 beta 5 (Build 15G5077a) 11.4.1       (Build 15G77) 10.01.00  12.0 beta     (Build 16A5288q) 10.02.01  12.0 beta 2   (Build 16A5308e) 12.0 beta 3  (Build 16A5318d) 12.0 beta 4  (Build 16A5327f) 12.0 beta 5  (Build 16A5339e) 10.03.00  12.0 beta 6   (Build 16A5345f) 10.10.00  12.0 beta 7   (Build 16A5354b) 12.0 beta 8  (Build 16A5357b) 12.0 beta 9  (Build 16A5362a) 12.0 beta 10 (Build 16A5364a) 12.0 beta 11 (Build 16A5365b) 12.0 beta 12 (Build 16A5366a) 12.0 GM      (Build 16A366) 12.0         (Build 16A366) 12.0.1       (Build 16A404) 10.03.00  12.1 beta     (Build 16B5059d) 12.1 beta 2  (Build 16B5068i) 10.10.00  12.1 beta 3   (Build 16B5077c) 12.1 beta 4  (Build 16B5084a) 12.1 beta 5  (Build 16B5089b) 12.1         (Build 16B92) 10.30.00  12.1.1 beta   (Build 16C5036c) 10.31.00  12.1.1 beta 2 (Build 16C5043b) 12.1.1 beta 3 (Build 16C5050a) 12.1.1       (Build 16C50) 10.30.00  12.1.2 beta   (Build 16D5024a) 10.31.00  12.1.2        (Build 16C101 & 16C104) 12.1.3 beta 2 (Build 16D5032a) 12.1.3 beta 3 (Build 16D5037a) 12.1.3 beta 4 (Build 16D5039a) 12.1.3       (Build 16D39) 12.1.4       (Build 16D57) 10.50.01  12.2 beta     (Build 16E5181f) 12.2 beta 2  (Build 16E5191d) 12.2 beta 3  (Build 16E5201e) 10.56.00  12.2 beta 4   (Build 16E5212f) 12.2 beta 5  (Build 16E5223a) 12.2 beta 6  (Build 16E5227a) 12.2         (Build 16E227) 10.55.00  12.3 beta     (Build 16F5117h) 10.57.00  12.3 beta 2   (Build 16F5129d) 10.70.01  12.3 beta 3   (Build 16F5139e) 12.3 beta 4  (Build 16F5148a) 12.3 beta 5  (Build 16F5155a) 12.3 beta 6  (Build 16F5156a) 12.3         (Build 16F156) 12.3.1       (Build 16F203) 12.4 beta    (Build 16G5027g) 12.4 beta 2  (Build 16G5027i) 12.4 beta 3  (Build 16G5038d) 10.80.01  12.4 beta 4   (Build 16G5046d) 12.4 beta 5  (Build 16G5056d) 12.4 beta 6  (Build 16G5069a) 10.80.02  12.4 beta 7   (Build 16G5077a) 12.4         (Build 16G77) 12.4.1       (Build 16G102) 12.4.2       (Build 16G114) 12.4.3       (Build 16G130) 12.4.4       (Build 16G140) 12.4.5       (Build 16G161) 12.4.6       (Build 16G183) 12.4.7       (Build 16G192) 12.4.8       (Build 16G201) 12.4.9       (Build 16H5) 12.5         (Build 16H20) 12.5.1       (Build 16H22) 12.5.2       (Build 16H30) 12.5.3       (Build 16H41) 12.5.4       (Build 16H50) 12.5.5       (Build 16H62) 12.5.6       (Build 16H71) 12.5.7       (Build 16H81)