ZyXEL U-1496S Plus User Guide - Page 107

B for U-1496B - u 1496eg plus

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Most of the U-1496 series modems' functions and features are controlled by the system firmware contained in two EPROMs. These two EPROMs are labeled in the PCB (Printed Circuit Board) as U24 and U25. You can update/upgrade your modem with new functions and features just by changing the EPROMs. ZyXEL has a policy of free distribution of new firmware (but not EPROMs) when it becomes available. New firmware is distributed in two binary files. Dealers/users can download them and program EPROMs of their own using an EPROM programmer. Each U-1496 series model has a set of different firmware code. The firmware is not exchangeable between different models. Firmware files are named with version number, model suffix character, and chip label extension. An example is RM610EP.U24 socket number | | |+--- type ( - P lus - N etwork) | | +---- model (B - E - R - S) | +------ revision +-------- EPROM type (K (512K), M (1M), T (2M)) This file name codes for software revision 6.10 for the U-1496E Plus model and for EPROM U24. This firmware is used on 1Mbit EPROM. If a letter T is used instead of M, it means it is used on 2M EPROM. Some new features, such as cellular modes on Plus models, need 2M EPROM. The other suffix character meanings are: S for U-1496 (stand alone), B for U-1496B, R for U-1496R. Each firmware release is a set of two firmware files with extension U24 and U25. For U-1496 and U-1496E models, you need to open the case in order to change the EPROM. Following are the case opening procedures: U-1496: Remove the rear two rubber pads, unscrew the two screws under the pads, and the case can be opened. U-1496E: Press on the side of the upper case and use fingernail or screw driver to bend the locking flap a little to open. Do the same to each locking flap. Special models with metal case (e.g., U-1496EG+): Bend the tabs on the front and back panel outward to remove the panels. Unscrew the five screws at the bottom of the case. Pull out the PCB. Use a small screw driver to lever the EPROM chip out of its socket. Lever up each end a little to avoid bending the IC pins. When you put the new firmware EPROM in, make sure the IC orientation is right. Inserting the EPROM IC in reverse orientation will damage the IC. ZyXEL is constantly doing firmware enhancements to its modem. The enhancements include new features, performance improvements, bug fixes, and/or higher speeds. ZyXEL will provide free distribution of the new firmware but ZyXEL does not guarantee what the new firmware will

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Most of the U-1496 series modems' functions and features are controlled by the system firmware
contained in two EPROMs. These two EPROMs are labeled in the PCB (Printed Circuit Board)
as U24 and U25. You can update/upgrade your modem with new functions and features just by
changing the EPROMs.
ZyXEL has a policy of free distribution of new firmware (but not EPROMs) when it becomes
available. New firmware is distributed in two binary files. Dealers/users can download them and
program EPROMs of their own using an EPROM programmer. Each U-1496 series model has a
set of different firmware code. The firmware is not exchangeable between different models.
Firmware files are named with version number, model suffix character, and chip label extension.
An example is
RM610EP.U24
| | || |
| | || +- socket number
| | |+--- type (<none> - P lus - N etwork)
| | +---- model (B - E - R - S)
| +------ revision
+-------- EPROM type (K (512K), M (1M), T (2M))
This file name codes for software revision 6.10 for the U-1496E Plus model and for EPROM
U24. This firmware is used on 1Mbit EPROM. If a letter T is used instead of M, it means it is
used on 2M EPROM. Some new features, such as cellular modes on Plus models, need 2M
EPROM. The other suffix character meanings are:
S for U-1496 (stand alone),
B for U-1496B,
R for U-1496R.
Each firmware release is a set of two firmware files with extension U24 and U25.
For U-1496 and U-1496E models, you need to open the case in order to change the EPROM.
Following are the case opening procedures:
U-1496:
Remove the rear two rubber pads, unscrew the two screws under the pads, and the case can be
opened.
U-1496E:
Press on the side of the upper case and use fingernail or screw driver to bend the locking flap a
little to open. Do the same to each locking flap.
Special models with metal case (e.g., U-1496EG+):
Bend the tabs on the
front and back panel outward to remove the panels. Unscrew the five
screws at the bottom of the case. Pull out the PCB.
Use a small screw driver to lever the EPROM chip out of its socket. Lever up each end a little to
avoid bending the IC pins. When you put the new firmware EPROM in, make sure the IC
orientation is right. Inserting the EPROM IC in reverse orientation will damage the IC.
ZyXEL is constantly doing firmware enhancements to its modem. The enhancements include
new features, performance improvements, bug fixes, and/or higher speeds. ZyXEL will provide
free distribution of the new firmware but ZyXEL does not guarantee what the new firmware will