Reference Manual
Table Of Contents
- Important Notice
- Safety and Hazards
- Limitation of Liability
- Patents
- Copyright
- Trademarks
- Revision History
- 1: About This Guide
- 2: AT Password Commands
- 3: Modem Status, Customization, and Reset Commands
- 4: Mobile IP Commands
- 5: SIM Commands
- 6: OMA-DM Commands
- 7: Supported GSM / WCDMA AT Commands
- 8: HSDPA / HSUPA Categories
- 9: Band Definitions
- 10: ASCII Table
- Index (AT commands)
- Index

Modem Status, Customization, and Reset Commands
Rev. 1 Sep.13 Proprietary and Confidential 17
!BAND (continued)
Select/return frequency band set (continued)
Parameters:
<Index> (Index of a band set. Use the Query List command to display all supported
sets)
• Valid range: 0–13 (Hexadecimal. There are 20 possible values.)
<Name> (Name of the band set)
• ASCII string—Up to 30 characters
<GWmask> (GSM/WCDMA bands included in the set)
• Format: 32-bit bitmask
• Valid values:
• 0000000000000001—BC0-A
• 0000000000000002—BC0-B
• 0000000000000003—BC0 (BC0-A and BC0-B)
• 0000000000000004—BC1
• 0000000000000080—G1800
• 0000000000000300—G900 (EGSM/GSM)
• 0000000000000400—BC6
• 0000000000004000—BC10 (800)
• 0000000000080000—G850
• 0000000000200000—G1900
• 0000000000400000—W2100
• 0000000000800000—W1900
• 0000000002000000—W1700
• 0000000004000000—W850
• 0000000008000000—W800
• 0000000080000000—BC15
• 0002000000000000—W900
• 1000000000000000—B19 (850)
<Lmask> (LTE bands included in the set)
• Format: 32-bit bitmask
• Valid values:
• 0000000000000001—Band 1
0000000000000002—Band 2
...
0000008000000000—Band 40
0000010000000000—Band 41
!BOOTHOLD
Reset modem and wait in bootloader for firmware download
Prepare for a firmware download by resetting the modem and waiting in ‘boot and hold’
mode.
Password required: No
Usage:
• Execution: AT!BOOTHOLD
Response:
OK
Purpose: Force the modem to backup user NV options, reset, and then wait in
boot and hold mode for a firmware download.
Table 3-2: Modem status, customization, and reset commands (Continued)
Command Description